[1682] | 1 | !> @file temperton_fft.f90 |
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[1] | 2 | !------------------------------------------------------------------------------! |
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[1682] | 3 | ! |
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[258] | 4 | ! Current revisions: |
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[1] | 5 | ! ----------------- |
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[1682] | 6 | ! Code annotations made doxygen readable |
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[1343] | 7 | ! |
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[1321] | 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| 10 | ! $Id: temperton_fft.f90 1682 2015-10-07 23:56:08Z knoop $ |
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| 11 | ! |
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[1343] | 12 | ! 1342 2014-03-26 17:04:47Z kanani |
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| 13 | ! REAL constants defined as wp-kind |
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| 14 | ! |
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[1323] | 15 | ! 1322 2014-03-20 16:38:49Z raasch |
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| 16 | ! REAL constants defined as wp-kind |
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| 17 | ! |
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[1321] | 18 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 19 | ! ONLY-attribute added to USE-statements, |
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| 20 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 21 | ! kinds are defined in new module kinds, |
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| 22 | ! old module precision_kind is removed, |
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| 23 | ! revision history before 2012 removed, |
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| 24 | ! comment fields (!:) to be used for variable explanations added to |
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| 25 | ! all variable declaration statements |
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[1] | 26 | ! |
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| 27 | ! Revision 1.1 2003/03/12 16:41:59 raasch |
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| 28 | ! Initial revision |
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| 29 | ! |
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| 30 | ! |
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| 31 | ! Description: |
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| 32 | ! ------------ |
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[1682] | 33 | !> Fast Fourier transformation developed by Clive Temperton, ECMWF. |
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[1] | 34 | !------------------------------------------------------------------------------! |
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[1682] | 35 | MODULE temperton_fft |
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[1] | 36 | |
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[1320] | 37 | USE kinds |
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| 38 | |
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[1] | 39 | IMPLICIT NONE |
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| 40 | |
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| 41 | PRIVATE |
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| 42 | |
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| 43 | PUBLIC set99, fft991cy |
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| 44 | |
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| 45 | |
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[1682] | 46 | INTEGER(iwp) :: nfax(10) !< array used by *fft991*. |
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| 47 | REAL(wp), ALLOCATABLE :: trig(:) !< array used by *fft991*. |
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[1] | 48 | |
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| 49 | ! |
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| 50 | !-- nfft: maximum length of calls to *fft. |
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| 51 | #if defined( __nec ) |
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[1682] | 52 | INTEGER(iwp), PARAMETER :: nfft = 256 !< |
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[1] | 53 | #else |
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[1682] | 54 | INTEGER(iwp), PARAMETER :: nfft = 32 !< |
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[1] | 55 | #endif |
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| 56 | |
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[1682] | 57 | INTEGER(iwp), PARAMETER :: nout = 6 !< standard output stream |
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[1] | 58 | |
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| 59 | CONTAINS |
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| 60 | |
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[1682] | 61 | !------------------------------------------------------------------------------! |
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| 62 | ! Description: |
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| 63 | ! ------------ |
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| 64 | !> Calls fortran-versions of fft's. |
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| 65 | !> |
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| 66 | !> Method: |
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| 67 | !> |
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| 68 | !> Subroutine 'fft991cy' - multiple fast real periodic transform |
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| 69 | !> supersedes previous routine 'fft991cy'. |
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| 70 | !> |
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| 71 | !> Real transform of length n performed by removing redundant |
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| 72 | !> operations from complex transform of length n. |
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| 73 | !> |
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| 74 | !> a is the array containing input & output data. |
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| 75 | !> work is an area of size (n+1)*min(lot,nfft). |
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| 76 | !> trigs is a previously prepared list of trig function values. |
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| 77 | !> ifax is a previously prepared list of factors of n. |
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| 78 | !> inc is the increment within each data 'vector' |
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| 79 | !> (e.g. inc=1 for consecutively stored data). |
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| 80 | !> jump is the increment between the start of each data vector. |
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| 81 | !> n is the length of the data vectors. |
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| 82 | !> lot is the number of data vectors. |
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| 83 | !> isign = +1 for transform from spectral to gridpoint |
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| 84 | !> = -1 for transform from gridpoint to spectral. |
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| 85 | !> |
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| 86 | !> ordering of coefficients: |
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| 87 | !> a(0),b(0),a(1),b(1),a(2),b(2),.,a(n/2),b(n/2) |
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| 88 | !> where b(0)=b(n/2)=0; (n+2) locations required. |
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| 89 | !> |
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| 90 | !> ordering of data: |
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| 91 | !> x(0),x(1),x(2),.,x(n-1), 0 , 0 ; (n+2) locations required. |
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| 92 | !> |
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| 93 | !> Vectorization is achieved on cray by doing the transforms |
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| 94 | !> in parallel. |
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| 95 | !> |
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| 96 | !> n must be composed of factors 2,3 & 5 but does not have to be even. |
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| 97 | !> |
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| 98 | !> definition of transforms: |
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| 99 | !> |
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| 100 | !> isign=+1: x(j)=sum(k=0,.,n-1)(c(k)*exp(2*i*j*k*pi/n)) |
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| 101 | !> where c(k)=a(k)+i*b(k) and c(n-k)=a(k)-i*b(k) |
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| 102 | !> |
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| 103 | !> isign=-1: a(k)=(1/n)*sum(j=0,.,n-1)(x(j)*cos(2*j*k*pi/n)) |
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| 104 | !> b(k)=-(1/n)*sum(j=0,.,n-1)(x(j)*sin(2*j*k*pi/n)) |
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| 105 | !> |
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| 106 | !> calls fortran-versions of fft's !!! |
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| 107 | !> dimension a(n),work(n),trigs(n),ifax(1) |
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| 108 | !------------------------------------------------------------------------------! |
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[1] | 109 | SUBROUTINE fft991cy(a,work,trigs,ifax,inc,jump,n,lot,isign) |
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| 110 | |
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[1320] | 111 | USE kinds |
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[1] | 112 | |
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| 113 | IMPLICIT NONE |
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| 114 | |
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| 115 | ! Scalar arguments |
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[1682] | 116 | INTEGER(iwp) :: inc !< |
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| 117 | INTEGER(iwp) :: isign !< |
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| 118 | INTEGER(iwp) :: jump !< |
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| 119 | INTEGER(iwp) :: lot !< |
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| 120 | INTEGER(iwp) :: n !< |
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[1] | 121 | |
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| 122 | ! Array arguments |
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[1682] | 123 | REAL(wp) :: a(*) !< |
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| 124 | REAL(wp) :: trigs(*) !< |
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| 125 | REAL(wp) :: work(*) !< |
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| 126 | INTEGER(iwp) :: ifax(*) !< |
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[1] | 127 | |
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| 128 | ! Local scalars: |
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[1682] | 129 | INTEGER(iwp) :: i !< |
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| 130 | INTEGER(iwp) :: ia !< |
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| 131 | INTEGER(iwp) :: ibase !< |
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| 132 | INTEGER(iwp) :: ierr !< |
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| 133 | INTEGER(iwp) :: ifac !< |
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| 134 | INTEGER(iwp) :: igo !< |
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| 135 | INTEGER(iwp) :: ii !< |
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| 136 | INTEGER(iwp) :: istart !< |
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| 137 | INTEGER(iwp) :: ix !< |
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| 138 | INTEGER(iwp) :: iz !< |
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| 139 | INTEGER(iwp) :: j !< |
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| 140 | INTEGER(iwp) :: jbase !< |
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| 141 | INTEGER(iwp) :: jj !< |
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| 142 | INTEGER(iwp) :: k !< |
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| 143 | INTEGER(iwp) :: la !< |
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| 144 | INTEGER(iwp) :: nb !< |
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| 145 | INTEGER(iwp) :: nblox !< |
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| 146 | INTEGER(iwp) :: nfax !< |
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| 147 | INTEGER(iwp) :: nvex !< |
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| 148 | INTEGER(iwp) :: nx !< |
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[1] | 149 | |
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| 150 | ! Intrinsic functions |
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[1320] | 151 | ! INTRINSIC MOD |
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[1] | 152 | |
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| 153 | |
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| 154 | ! Executable statements |
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| 155 | |
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| 156 | IF (ifax(10)/=n) CALL set99(trigs,ifax,n) |
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| 157 | nfax = ifax(1) |
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| 158 | nx = n + 1 |
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| 159 | IF (MOD(n,2)==1) nx = n |
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| 160 | nblox = 1 + (lot-1)/nfft |
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| 161 | nvex = lot - (nblox-1)*nfft |
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| 162 | IF (isign==-1) GO TO 50 |
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| 163 | |
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| 164 | ! isign=+1, spectral to gridpoint transform |
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| 165 | |
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| 166 | istart = 1 |
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| 167 | DO nb = 1, nblox |
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| 168 | ia = istart |
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| 169 | i = istart |
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| 170 | !DIR$ IVDEP |
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| 171 | !CDIR NODEP |
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| 172 | !OCL NOVREC |
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| 173 | DO j = 1, nvex |
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[1342] | 174 | a(i+inc) = 0.5_wp*a(i) |
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[1] | 175 | i = i + jump |
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| 176 | END DO |
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| 177 | IF (MOD(n,2)==1) GO TO 10 |
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| 178 | i = istart + n*inc |
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| 179 | DO j = 1, nvex |
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[1342] | 180 | a(i) = 0.5_wp*a(i) |
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[1] | 181 | i = i + jump |
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| 182 | END DO |
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| 183 | 10 CONTINUE |
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| 184 | ia = istart + inc |
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| 185 | la = 1 |
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| 186 | igo = + 1 |
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| 187 | |
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| 188 | DO k = 1, nfax |
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| 189 | ifac = ifax(k+1) |
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| 190 | ierr = -1 |
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| 191 | IF (igo==-1) GO TO 20 |
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| 192 | CALL rpassm(a(ia),a(ia+la*inc),work(1),work(ifac*la+1),trigs,inc,1, & |
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| 193 | & jump,nx,nvex,n,ifac,la,ierr) |
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| 194 | GO TO 30 |
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| 195 | 20 CONTINUE |
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| 196 | CALL rpassm(work(1),work(la+1),a(ia),a(ia+ifac*la*inc),trigs,1,inc,nx, & |
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| 197 | & jump,nvex,n,ifac,la,ierr) |
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| 198 | 30 CONTINUE |
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| 199 | IF (ierr/=0) GO TO 100 |
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| 200 | la = ifac*la |
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| 201 | igo = -igo |
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| 202 | ia = istart |
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| 203 | END DO |
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| 204 | |
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| 205 | ! If necessary, copy results back to a |
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| 206 | |
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| 207 | IF (MOD(nfax,2)==0) GO TO 40 |
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| 208 | ibase = 1 |
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| 209 | jbase = ia |
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| 210 | DO jj = 1, nvex |
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| 211 | i = ibase |
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| 212 | j = jbase |
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| 213 | DO ii = 1, n |
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| 214 | a(j) = work(i) |
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| 215 | i = i + 1 |
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| 216 | j = j + inc |
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| 217 | END DO |
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| 218 | ibase = ibase + nx |
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| 219 | jbase = jbase + jump |
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| 220 | END DO |
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| 221 | 40 CONTINUE |
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| 222 | |
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| 223 | ! Fill in zeros at end |
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| 224 | |
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| 225 | ix = istart + n*inc |
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| 226 | !DIR$ IVDEP |
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| 227 | !CDIR NODEP |
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| 228 | !OCL NOVREC |
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| 229 | DO j = 1, nvex |
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[1342] | 230 | a(ix) = 0.0_wp |
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| 231 | a(ix+inc) = 0.0_wp |
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[1] | 232 | ix = ix + jump |
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| 233 | END DO |
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| 234 | |
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| 235 | istart = istart + nvex*jump |
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| 236 | nvex = nfft |
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| 237 | END DO |
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| 238 | RETURN |
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| 239 | |
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| 240 | ! isign=-1, gridpoint to spectral transform |
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| 241 | |
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| 242 | 50 CONTINUE |
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| 243 | istart = 1 |
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| 244 | DO nb = 1, nblox |
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| 245 | ia = istart |
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| 246 | la = n |
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| 247 | igo = + 1 |
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| 248 | |
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| 249 | DO k = 1, nfax |
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| 250 | ifac = ifax(nfax+2-k) |
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| 251 | la = la/ifac |
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| 252 | ierr = -1 |
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| 253 | IF (igo==-1) GO TO 60 |
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| 254 | CALL qpassm(a(ia),a(ia+ifac*la*inc),work(1),work(la+1),trigs,inc,1, & |
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| 255 | & jump,nx,nvex,n,ifac,la,ierr) |
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| 256 | GO TO 70 |
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| 257 | 60 CONTINUE |
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| 258 | CALL qpassm(work(1),work(ifac*la+1),a(ia),a(ia+la*inc),trigs,1,inc,nx, & |
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| 259 | & jump,nvex,n,ifac,la,ierr) |
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| 260 | 70 CONTINUE |
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| 261 | IF (ierr/=0) GO TO 100 |
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| 262 | igo = -igo |
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| 263 | ia = istart + inc |
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| 264 | END DO |
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| 265 | |
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| 266 | ! If necessary, copy results back to a |
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| 267 | |
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| 268 | IF (MOD(nfax,2)==0) GO TO 80 |
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| 269 | ibase = 1 |
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| 270 | jbase = ia |
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| 271 | DO jj = 1, nvex |
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| 272 | i = ibase |
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| 273 | j = jbase |
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| 274 | DO ii = 1, n |
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| 275 | a(j) = work(i) |
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| 276 | i = i + 1 |
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| 277 | j = j + inc |
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| 278 | END DO |
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| 279 | ibase = ibase + nx |
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| 280 | jbase = jbase + jump |
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| 281 | END DO |
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| 282 | 80 CONTINUE |
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| 283 | |
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| 284 | ! Shift a(0) & fill in zero imag parts |
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| 285 | |
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| 286 | ix = istart |
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| 287 | !DIR$ IVDEP |
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| 288 | !CDIR NODEP |
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| 289 | !OCL NOVREC |
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| 290 | DO j = 1, nvex |
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| 291 | a(ix) = a(ix+inc) |
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[1342] | 292 | a(ix+inc) = 0.0_wp |
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[1] | 293 | ix = ix + jump |
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| 294 | END DO |
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| 295 | IF (MOD(n,2)==1) GO TO 90 |
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| 296 | iz = istart + (n+1)*inc |
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| 297 | DO j = 1, nvex |
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[1342] | 298 | a(iz) = 0.0_wp |
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[1] | 299 | iz = iz + jump |
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| 300 | END DO |
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| 301 | 90 CONTINUE |
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| 302 | |
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| 303 | istart = istart + nvex*jump |
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| 304 | nvex = nfft |
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| 305 | END DO |
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| 306 | RETURN |
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| 307 | |
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| 308 | ! Error messages |
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| 309 | |
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| 310 | 100 CONTINUE |
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| 311 | |
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| 312 | SELECT CASE (ierr) |
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| 313 | CASE (:-1) |
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| 314 | WRITE (nout,'(A,I5,A)') ' Vector length =',nvex,', greater than nfft' |
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| 315 | CASE (0) |
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| 316 | WRITE (nout,'(A,I3,A)') ' Factor =',ifac,', not catered for' |
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| 317 | CASE (1:) |
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| 318 | WRITE (nout,'(A,I3,A)') ' Factor =',ifac,', only catered for if la*ifac=n' |
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| 319 | END SELECT |
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| 320 | |
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| 321 | RETURN |
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| 322 | END SUBROUTINE fft991cy |
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| 323 | |
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[1682] | 324 | !------------------------------------------------------------------------------! |
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| 325 | ! Description: |
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| 326 | ! ------------ |
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| 327 | !> Performs one pass through data as part of |
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| 328 | !> multiple real fft (fourier analysis) routine. |
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| 329 | !> |
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| 330 | !> Method: |
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| 331 | !> |
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| 332 | !> a is first real input vector |
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| 333 | !> equivalence b(1) with a(ifac*la*inc1+1) |
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| 334 | !> c is first real output vector |
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| 335 | !> equivalence d(1) with c(la*inc2+1) |
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| 336 | !> trigs is a precalculated list of sines & cosines |
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| 337 | !> inc1 is the addressing increment for a |
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| 338 | !> inc2 is the addressing increment for c |
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| 339 | !> inc3 is the increment between input vectors a |
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| 340 | !> inc4 is the increment between output vectors c |
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| 341 | !> lot is the number of vectors |
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| 342 | !> n is the length of the vectors |
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| 343 | !> ifac is the current factor of n |
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| 344 | !> la = n/(product of factors used so far) |
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| 345 | !> ierr is an error indicator: |
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| 346 | !> 0 - pass completed without error |
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| 347 | !> 1 - lot greater than nfft |
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| 348 | !> 2 - ifac not catered for |
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| 349 | !> 3 - ifac only catered for if la=n/ifac |
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| 350 | !------------------------------------------------------------------------------! |
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[1] | 351 | SUBROUTINE qpassm(a,b,c,d,trigs,inc1,inc2,inc3,inc4,lot,n,ifac,la,ierr) |
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| 352 | |
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[1320] | 353 | USE kinds |
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[1] | 354 | |
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[1320] | 355 | IMPLICIT NONE |
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| 356 | |
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[1] | 357 | ! Scalar arguments |
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[1682] | 358 | INTEGER(iwp) :: ierr !< |
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| 359 | INTEGER(iwp) :: ifac !< |
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| 360 | INTEGER(iwp) :: inc1 !< |
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| 361 | INTEGER(iwp) :: inc2 !< |
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| 362 | INTEGER(iwp) :: inc3 !< |
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| 363 | INTEGER(iwp) :: inc4 !< |
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| 364 | INTEGER(iwp) :: la !< |
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| 365 | INTEGER(iwp) :: lot !< |
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| 366 | INTEGER(iwp) :: n !< |
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[1] | 367 | |
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| 368 | ! Array arguments |
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| 369 | ! REAL :: a(n),b(n),c(n),d(n),trigs(n) |
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[1682] | 370 | REAL(wp) :: a(*) !< |
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| 371 | REAL(wp) :: b(*) !< |
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| 372 | REAL(wp) :: c(*) !< |
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| 373 | REAL(wp) :: d(*) !< |
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| 374 | REAL(wp) :: trigs(*) !< |
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[1320] | 375 | |
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[1] | 376 | ! Local scalars: |
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[1682] | 377 | REAL(wp) :: a0 !< |
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| 378 | REAL(wp) :: a1 !< |
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| 379 | REAL(wp) :: a10 !< |
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| 380 | REAL(wp) :: a11 !< |
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| 381 | REAL(wp) :: a2 !< |
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| 382 | REAL(wp) :: a20 !< |
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| 383 | REAL(wp) :: a21 !< |
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| 384 | REAL(wp) :: a3 !< |
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| 385 | REAL(wp) :: a4 !< |
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| 386 | REAL(wp) :: a5 !< |
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| 387 | REAL(wp) :: a6 !< |
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| 388 | REAL(wp) :: b0 !< |
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| 389 | REAL(wp) :: b1 !< |
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| 390 | REAL(wp) :: b10 !< |
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| 391 | REAL(wp) :: b11 !< |
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| 392 | REAL(wp) :: b2 !< |
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| 393 | REAL(wp) :: b20 !< |
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| 394 | REAL(wp) :: b21 !< |
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| 395 | REAL(wp) :: b3 !< |
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| 396 | REAL(wp) :: b4 !< |
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| 397 | REAL(wp) :: b5 !< |
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| 398 | REAL(wp) :: b6 !< |
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| 399 | REAL(wp) :: c1 !< |
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| 400 | REAL(wp) :: c2 !< |
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| 401 | REAL(wp) :: c3 !< |
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| 402 | REAL(wp) :: c4 !< |
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| 403 | REAL(wp) :: c5 !< |
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| 404 | REAL(wp) :: qrt5 !< |
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| 405 | REAL(wp) :: s1 !< |
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| 406 | REAL(wp) :: s2 !< |
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| 407 | REAL(wp) :: s3 !< |
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| 408 | REAL(wp) :: s4 !< |
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| 409 | REAL(wp) :: s5 !< |
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| 410 | REAL(wp) :: sin36 !< |
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| 411 | REAL(wp) :: sin45 !< |
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| 412 | REAL(wp) :: sin60 !< |
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| 413 | REAL(wp) :: sin72 !< |
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| 414 | REAL(wp) :: z !< |
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| 415 | REAL(wp) :: zqrt5 !< |
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| 416 | REAL(wp) :: zsin36 !< |
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| 417 | REAL(wp) :: zsin45 !< |
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| 418 | REAL(wp) :: zsin60 !< |
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| 419 | REAL(wp) :: zsin72 !< |
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[1] | 420 | |
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[1682] | 421 | INTEGER(iwp) :: i !< |
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| 422 | INTEGER(iwp) :: ia !< |
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| 423 | INTEGER(iwp) :: ib !< |
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| 424 | INTEGER(iwp) :: ibad !< |
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| 425 | INTEGER(iwp) :: ibase !< |
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| 426 | INTEGER(iwp) :: ic !< |
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| 427 | INTEGER(iwp) :: id !< |
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| 428 | INTEGER(iwp) :: ie !< |
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| 429 | INTEGER(iwp) :: if !< |
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| 430 | INTEGER(iwp) :: ig !< |
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| 431 | INTEGER(iwp) :: igo !< |
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| 432 | INTEGER(iwp) :: ih !< |
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| 433 | INTEGER(iwp) :: iink !< |
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| 434 | INTEGER(iwp) :: ijk !< |
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| 435 | INTEGER(iwp) :: ijump !< |
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| 436 | INTEGER(iwp) :: j !< |
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| 437 | INTEGER(iwp) :: ja !< |
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| 438 | INTEGER(iwp) :: jb !< |
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| 439 | INTEGER(iwp) :: jbase !< |
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| 440 | INTEGER(iwp) :: jc !< |
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| 441 | INTEGER(iwp) :: jd !< |
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| 442 | INTEGER(iwp) :: je !< |
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| 443 | INTEGER(iwp) :: jf !< |
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| 444 | INTEGER(iwp) :: jink !< |
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| 445 | INTEGER(iwp) :: k !< |
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| 446 | INTEGER(iwp) :: kb !< |
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| 447 | INTEGER(iwp) :: kc !< |
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| 448 | INTEGER(iwp) :: kd !< |
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| 449 | INTEGER(iwp) :: ke !< |
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| 450 | INTEGER(iwp) :: kf !< |
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| 451 | INTEGER(iwp) :: kstop !< |
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| 452 | INTEGER(iwp) :: l !< |
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| 453 | INTEGER(iwp) :: m !< |
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[1320] | 454 | |
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[1] | 455 | ! Intrinsic functions |
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[1320] | 456 | ! INTRINSIC REAL, SQRT |
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[1] | 457 | |
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| 458 | ! Data statements |
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[1320] | 459 | DATA sin36/0.587785252292473_wp/, sin72/0.951056516295154_wp/, & |
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| 460 | & qrt5/0.559016994374947_wp/, sin60/0.866025403784437_wp/ |
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[1] | 461 | |
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| 462 | |
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| 463 | ! Executable statements |
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| 464 | |
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| 465 | m = n/ifac |
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| 466 | iink = la*inc1 |
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| 467 | jink = la*inc2 |
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| 468 | ijump = (ifac-1)*iink |
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| 469 | kstop = (n-ifac)/(2*ifac) |
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| 470 | |
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| 471 | ibad = 1 |
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| 472 | IF (lot>nfft) GO TO 180 |
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| 473 | ibase = 0 |
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| 474 | jbase = 0 |
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| 475 | igo = ifac - 1 |
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| 476 | IF (igo==7) igo = 6 |
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| 477 | ibad = 2 |
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| 478 | IF (igo<1 .OR. igo>6) GO TO 180 |
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| 479 | GO TO (10,40,70,100,130,160) igo |
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| 480 | |
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| 481 | ! Coding for factor 2 |
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| 482 | |
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| 483 | 10 CONTINUE |
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| 484 | ia = 1 |
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| 485 | ib = ia + iink |
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| 486 | ja = 1 |
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| 487 | jb = ja + (2*m-la)*inc2 |
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| 488 | |
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| 489 | IF (la==m) GO TO 30 |
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| 490 | |
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| 491 | DO l = 1, la |
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| 492 | i = ibase |
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| 493 | j = jbase |
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| 494 | !DIR$ IVDEP |
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| 495 | !CDIR NODEP |
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| 496 | !OCL NOVREC |
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| 497 | DO ijk = 1, lot |
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| 498 | c(ja+j) = a(ia+i) + a(ib+i) |
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| 499 | c(jb+j) = a(ia+i) - a(ib+i) |
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| 500 | i = i + inc3 |
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| 501 | j = j + inc4 |
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| 502 | END DO |
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| 503 | ibase = ibase + inc1 |
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| 504 | jbase = jbase + inc2 |
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| 505 | END DO |
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| 506 | ja = ja + jink |
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| 507 | jink = 2*jink |
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| 508 | jb = jb - jink |
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| 509 | ibase = ibase + ijump |
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| 510 | ijump = 2*ijump + iink |
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| 511 | IF (ja==jb) GO TO 20 |
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| 512 | DO k = la, kstop, la |
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| 513 | kb = k + k |
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| 514 | c1 = trigs(kb+1) |
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| 515 | s1 = trigs(kb+2) |
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| 516 | jbase = 0 |
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| 517 | DO l = 1, la |
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| 518 | i = ibase |
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| 519 | j = jbase |
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| 520 | !DIR$ IVDEP |
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| 521 | !CDIR NODEP |
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| 522 | !OCL NOVREC |
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| 523 | DO ijk = 1, lot |
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| 524 | c(ja+j) = a(ia+i) + (c1*a(ib+i)+s1*b(ib+i)) |
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| 525 | c(jb+j) = a(ia+i) - (c1*a(ib+i)+s1*b(ib+i)) |
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| 526 | d(ja+j) = (c1*b(ib+i)-s1*a(ib+i)) + b(ia+i) |
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| 527 | d(jb+j) = (c1*b(ib+i)-s1*a(ib+i)) - b(ia+i) |
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| 528 | i = i + inc3 |
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| 529 | j = j + inc4 |
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| 530 | END DO |
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| 531 | ibase = ibase + inc1 |
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| 532 | jbase = jbase + inc2 |
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| 533 | END DO |
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| 534 | ibase = ibase + ijump |
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| 535 | ja = ja + jink |
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| 536 | jb = jb - jink |
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| 537 | END DO |
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| 538 | IF (ja>jb) GO TO 170 |
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| 539 | 20 CONTINUE |
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| 540 | jbase = 0 |
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| 541 | DO l = 1, la |
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| 542 | i = ibase |
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| 543 | j = jbase |
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| 544 | !DIR$ IVDEP |
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| 545 | !CDIR NODEP |
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| 546 | !OCL NOVREC |
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| 547 | DO ijk = 1, lot |
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| 548 | c(ja+j) = a(ia+i) |
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| 549 | d(ja+j) = -a(ib+i) |
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| 550 | i = i + inc3 |
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| 551 | j = j + inc4 |
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| 552 | END DO |
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| 553 | ibase = ibase + inc1 |
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| 554 | jbase = jbase + inc2 |
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| 555 | END DO |
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| 556 | |
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| 557 | GO TO 170 |
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| 558 | 30 CONTINUE |
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[1342] | 559 | z = 1.0_wp/REAL(n,KIND=wp) |
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[1] | 560 | DO l = 1, la |
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| 561 | i = ibase |
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| 562 | j = jbase |
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| 563 | !DIR$ IVDEP |
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| 564 | !CDIR NODEP |
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| 565 | !OCL NOVREC |
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| 566 | DO ijk = 1, lot |
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| 567 | c(ja+j) = z*(a(ia+i)+a(ib+i)) |
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| 568 | c(jb+j) = z*(a(ia+i)-a(ib+i)) |
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| 569 | i = i + inc3 |
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| 570 | j = j + inc4 |
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| 571 | END DO |
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| 572 | ibase = ibase + inc1 |
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| 573 | jbase = jbase + inc2 |
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| 574 | END DO |
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| 575 | GO TO 170 |
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| 576 | |
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| 577 | ! Coding for factor 3 |
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| 578 | |
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| 579 | 40 CONTINUE |
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| 580 | ia = 1 |
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| 581 | ib = ia + iink |
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| 582 | ic = ib + iink |
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| 583 | ja = 1 |
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| 584 | jb = ja + (2*m-la)*inc2 |
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| 585 | jc = jb |
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| 586 | |
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| 587 | IF (la==m) GO TO 60 |
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| 588 | |
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| 589 | DO l = 1, la |
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| 590 | i = ibase |
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| 591 | j = jbase |
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| 592 | !DIR$ IVDEP |
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| 593 | !CDIR NODEP |
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| 594 | !OCL NOVREC |
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| 595 | DO ijk = 1, lot |
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| 596 | c(ja+j) = a(ia+i) + (a(ib+i)+a(ic+i)) |
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[1342] | 597 | c(jb+j) = a(ia+i) - 0.5_wp*(a(ib+i)+a(ic+i)) |
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[1] | 598 | d(jb+j) = sin60*(a(ic+i)-a(ib+i)) |
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| 599 | i = i + inc3 |
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| 600 | j = j + inc4 |
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| 601 | END DO |
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| 602 | ibase = ibase + inc1 |
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| 603 | jbase = jbase + inc2 |
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| 604 | END DO |
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| 605 | ja = ja + jink |
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| 606 | jink = 2*jink |
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| 607 | jb = jb + jink |
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| 608 | jc = jc - jink |
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| 609 | ibase = ibase + ijump |
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| 610 | ijump = 2*ijump + iink |
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| 611 | IF (ja==jc) GO TO 50 |
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| 612 | DO k = la, kstop, la |
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| 613 | kb = k + k |
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| 614 | kc = kb + kb |
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| 615 | c1 = trigs(kb+1) |
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| 616 | s1 = trigs(kb+2) |
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| 617 | c2 = trigs(kc+1) |
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| 618 | s2 = trigs(kc+2) |
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| 619 | jbase = 0 |
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| 620 | DO l = 1, la |
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| 621 | i = ibase |
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| 622 | j = jbase |
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| 623 | !DIR$ IVDEP |
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| 624 | !CDIR NODEP |
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| 625 | !OCL NOVREC |
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| 626 | DO ijk = 1, lot |
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| 627 | a1 = (c1*a(ib+i)+s1*b(ib+i)) + (c2*a(ic+i)+s2*b(ic+i)) |
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| 628 | b1 = (c1*b(ib+i)-s1*a(ib+i)) + (c2*b(ic+i)-s2*a(ic+i)) |
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[1342] | 629 | a2 = a(ia+i) - 0.5_wp*a1 |
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| 630 | b2 = b(ia+i) - 0.5_wp*b1 |
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[1] | 631 | a3 = sin60*((c1*a(ib+i)+s1*b(ib+i))-(c2*a(ic+i)+s2*b(ic+i))) |
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| 632 | b3 = sin60*((c1*b(ib+i)-s1*a(ib+i))-(c2*b(ic+i)-s2*a(ic+i))) |
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| 633 | c(ja+j) = a(ia+i) + a1 |
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| 634 | d(ja+j) = b(ia+i) + b1 |
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| 635 | c(jb+j) = a2 + b3 |
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| 636 | d(jb+j) = b2 - a3 |
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| 637 | c(jc+j) = a2 - b3 |
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| 638 | d(jc+j) = -(b2+a3) |
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| 639 | i = i + inc3 |
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| 640 | j = j + inc4 |
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| 641 | END DO |
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| 642 | ibase = ibase + inc1 |
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| 643 | jbase = jbase + inc2 |
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| 644 | END DO |
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| 645 | ibase = ibase + ijump |
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| 646 | ja = ja + jink |
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| 647 | jb = jb + jink |
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| 648 | jc = jc - jink |
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| 649 | END DO |
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| 650 | IF (ja>jc) GO TO 170 |
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| 651 | 50 CONTINUE |
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| 652 | jbase = 0 |
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| 653 | DO l = 1, la |
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| 654 | i = ibase |
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| 655 | j = jbase |
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| 656 | !DIR$ IVDEP |
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| 657 | !CDIR NODEP |
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| 658 | !OCL NOVREC |
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| 659 | DO ijk = 1, lot |
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[1342] | 660 | c(ja+j) = a(ia+i) + 0.5_wp*(a(ib+i)-a(ic+i)) |
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[1] | 661 | d(ja+j) = -sin60*(a(ib+i)+a(ic+i)) |
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| 662 | c(jb+j) = a(ia+i) - (a(ib+i)-a(ic+i)) |
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| 663 | i = i + inc3 |
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| 664 | j = j + inc4 |
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| 665 | END DO |
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| 666 | ibase = ibase + inc1 |
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| 667 | jbase = jbase + inc2 |
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| 668 | END DO |
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| 669 | |
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| 670 | GO TO 170 |
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| 671 | 60 CONTINUE |
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[1342] | 672 | z = 1.0_wp/REAL(n,KIND=wp) |
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[1] | 673 | zsin60 = z*sin60 |
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| 674 | DO l = 1, la |
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| 675 | i = ibase |
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| 676 | j = jbase |
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| 677 | !DIR$ IVDEP |
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| 678 | !CDIR NODEP |
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| 679 | !OCL NOVREC |
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| 680 | DO ijk = 1, lot |
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| 681 | c(ja+j) = z*(a(ia+i)+(a(ib+i)+a(ic+i))) |
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[1342] | 682 | c(jb+j) = z*(a(ia+i)-0.5_wp*(a(ib+i)+a(ic+i))) |
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[1] | 683 | d(jb+j) = zsin60*(a(ic+i)-a(ib+i)) |
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| 684 | i = i + inc3 |
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| 685 | j = j + inc4 |
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| 686 | END DO |
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| 687 | ibase = ibase + inc1 |
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| 688 | jbase = jbase + inc2 |
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| 689 | END DO |
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| 690 | GO TO 170 |
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| 691 | |
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| 692 | ! Coding for factor 4 |
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| 693 | |
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| 694 | 70 CONTINUE |
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| 695 | ia = 1 |
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| 696 | ib = ia + iink |
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| 697 | ic = ib + iink |
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| 698 | id = ic + iink |
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| 699 | ja = 1 |
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| 700 | jb = ja + (2*m-la)*inc2 |
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| 701 | jc = jb + 2*m*inc2 |
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| 702 | jd = jb |
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| 703 | |
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| 704 | IF (la==m) GO TO 90 |
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| 705 | |
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| 706 | DO l = 1, la |
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| 707 | i = ibase |
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| 708 | j = jbase |
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| 709 | !DIR$ IVDEP |
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| 710 | !CDIR NODEP |
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| 711 | !OCL NOVREC |
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| 712 | DO ijk = 1, lot |
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| 713 | c(ja+j) = (a(ia+i)+a(ic+i)) + (a(ib+i)+a(id+i)) |
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| 714 | c(jc+j) = (a(ia+i)+a(ic+i)) - (a(ib+i)+a(id+i)) |
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| 715 | c(jb+j) = a(ia+i) - a(ic+i) |
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| 716 | d(jb+j) = a(id+i) - a(ib+i) |
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| 717 | i = i + inc3 |
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| 718 | j = j + inc4 |
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| 719 | END DO |
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| 720 | ibase = ibase + inc1 |
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| 721 | jbase = jbase + inc2 |
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| 722 | END DO |
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| 723 | ja = ja + jink |
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| 724 | jink = 2*jink |
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| 725 | jb = jb + jink |
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| 726 | jc = jc - jink |
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| 727 | jd = jd - jink |
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| 728 | ibase = ibase + ijump |
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| 729 | ijump = 2*ijump + iink |
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| 730 | IF (jb==jc) GO TO 80 |
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| 731 | DO k = la, kstop, la |
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| 732 | kb = k + k |
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| 733 | kc = kb + kb |
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| 734 | kd = kc + kb |
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| 735 | c1 = trigs(kb+1) |
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| 736 | s1 = trigs(kb+2) |
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| 737 | c2 = trigs(kc+1) |
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| 738 | s2 = trigs(kc+2) |
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| 739 | c3 = trigs(kd+1) |
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| 740 | s3 = trigs(kd+2) |
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| 741 | jbase = 0 |
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| 742 | DO l = 1, la |
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| 743 | i = ibase |
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| 744 | j = jbase |
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| 745 | !DIR$ IVDEP |
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| 746 | !CDIR NODEP |
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| 747 | !OCL NOVREC |
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| 748 | DO ijk = 1, lot |
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| 749 | a0 = a(ia+i) + (c2*a(ic+i)+s2*b(ic+i)) |
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| 750 | a2 = a(ia+i) - (c2*a(ic+i)+s2*b(ic+i)) |
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| 751 | a1 = (c1*a(ib+i)+s1*b(ib+i)) + (c3*a(id+i)+s3*b(id+i)) |
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| 752 | a3 = (c1*a(ib+i)+s1*b(ib+i)) - (c3*a(id+i)+s3*b(id+i)) |
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| 753 | b0 = b(ia+i) + (c2*b(ic+i)-s2*a(ic+i)) |
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| 754 | b2 = b(ia+i) - (c2*b(ic+i)-s2*a(ic+i)) |
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| 755 | b1 = (c1*b(ib+i)-s1*a(ib+i)) + (c3*b(id+i)-s3*a(id+i)) |
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| 756 | b3 = (c1*b(ib+i)-s1*a(ib+i)) - (c3*b(id+i)-s3*a(id+i)) |
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| 757 | c(ja+j) = a0 + a1 |
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| 758 | c(jc+j) = a0 - a1 |
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| 759 | d(ja+j) = b0 + b1 |
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| 760 | d(jc+j) = b1 - b0 |
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| 761 | c(jb+j) = a2 + b3 |
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| 762 | c(jd+j) = a2 - b3 |
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| 763 | d(jb+j) = b2 - a3 |
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| 764 | d(jd+j) = -(b2+a3) |
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| 765 | i = i + inc3 |
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| 766 | j = j + inc4 |
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| 767 | END DO |
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| 768 | ibase = ibase + inc1 |
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| 769 | jbase = jbase + inc2 |
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| 770 | END DO |
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| 771 | ibase = ibase + ijump |
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| 772 | ja = ja + jink |
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| 773 | jb = jb + jink |
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| 774 | jc = jc - jink |
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| 775 | jd = jd - jink |
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| 776 | END DO |
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| 777 | IF (jb>jc) GO TO 170 |
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| 778 | 80 CONTINUE |
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[1320] | 779 | sin45 = SQRT(0.5_wp) |
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[1] | 780 | jbase = 0 |
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| 781 | DO l = 1, la |
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| 782 | i = ibase |
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| 783 | j = jbase |
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| 784 | !DIR$ IVDEP |
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| 785 | !CDIR NODEP |
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| 786 | !OCL NOVREC |
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| 787 | DO ijk = 1, lot |
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| 788 | c(ja+j) = a(ia+i) + sin45*(a(ib+i)-a(id+i)) |
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| 789 | c(jb+j) = a(ia+i) - sin45*(a(ib+i)-a(id+i)) |
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| 790 | d(ja+j) = -a(ic+i) - sin45*(a(ib+i)+a(id+i)) |
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| 791 | d(jb+j) = a(ic+i) - sin45*(a(ib+i)+a(id+i)) |
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| 792 | i = i + inc3 |
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| 793 | j = j + inc4 |
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| 794 | END DO |
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| 795 | ibase = ibase + inc1 |
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| 796 | jbase = jbase + inc2 |
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| 797 | END DO |
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| 798 | |
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| 799 | GO TO 170 |
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| 800 | 90 CONTINUE |
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[1342] | 801 | z = 1.0_wp/REAL(n,KIND=wp) |
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[1] | 802 | DO l = 1, la |
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| 803 | i = ibase |
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| 804 | j = jbase |
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| 805 | !DIR$ IVDEP |
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| 806 | !CDIR NODEP |
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| 807 | !OCL NOVREC |
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| 808 | DO ijk = 1, lot |
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| 809 | c(ja+j) = z*((a(ia+i)+a(ic+i))+(a(ib+i)+a(id+i))) |
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| 810 | c(jc+j) = z*((a(ia+i)+a(ic+i))-(a(ib+i)+a(id+i))) |
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| 811 | c(jb+j) = z*(a(ia+i)-a(ic+i)) |
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| 812 | d(jb+j) = z*(a(id+i)-a(ib+i)) |
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| 813 | i = i + inc3 |
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| 814 | j = j + inc4 |
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| 815 | END DO |
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| 816 | ibase = ibase + inc1 |
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| 817 | jbase = jbase + inc2 |
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| 818 | END DO |
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| 819 | GO TO 170 |
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| 820 | |
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| 821 | ! Coding for factor 5 |
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| 822 | |
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| 823 | 100 CONTINUE |
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| 824 | ia = 1 |
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| 825 | ib = ia + iink |
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| 826 | ic = ib + iink |
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| 827 | id = ic + iink |
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| 828 | ie = id + iink |
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| 829 | ja = 1 |
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| 830 | jb = ja + (2*m-la)*inc2 |
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| 831 | jc = jb + 2*m*inc2 |
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| 832 | jd = jc |
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| 833 | je = jb |
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| 834 | |
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| 835 | IF (la==m) GO TO 120 |
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| 836 | |
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| 837 | DO l = 1, la |
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| 838 | i = ibase |
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| 839 | j = jbase |
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| 840 | !DIR$ IVDEP |
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| 841 | !CDIR NODEP |
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| 842 | !OCL NOVREC |
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| 843 | DO ijk = 1, lot |
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| 844 | a1 = a(ib+i) + a(ie+i) |
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| 845 | a3 = a(ib+i) - a(ie+i) |
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| 846 | a2 = a(ic+i) + a(id+i) |
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| 847 | a4 = a(ic+i) - a(id+i) |
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[1342] | 848 | a5 = a(ia+i) - 0.25_wp*(a1+a2) |
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[1] | 849 | a6 = qrt5*(a1-a2) |
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| 850 | c(ja+j) = a(ia+i) + (a1+a2) |
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| 851 | c(jb+j) = a5 + a6 |
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| 852 | c(jc+j) = a5 - a6 |
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| 853 | d(jb+j) = -sin72*a3 - sin36*a4 |
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| 854 | d(jc+j) = -sin36*a3 + sin72*a4 |
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| 855 | i = i + inc3 |
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| 856 | j = j + inc4 |
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| 857 | END DO |
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| 858 | ibase = ibase + inc1 |
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| 859 | jbase = jbase + inc2 |
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| 860 | END DO |
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| 861 | ja = ja + jink |
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| 862 | jink = 2*jink |
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| 863 | jb = jb + jink |
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| 864 | jc = jc + jink |
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| 865 | jd = jd - jink |
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| 866 | je = je - jink |
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| 867 | ibase = ibase + ijump |
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| 868 | ijump = 2*ijump + iink |
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| 869 | IF (jb==jd) GO TO 110 |
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| 870 | DO k = la, kstop, la |
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| 871 | kb = k + k |
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| 872 | kc = kb + kb |
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| 873 | kd = kc + kb |
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| 874 | ke = kd + kb |
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| 875 | c1 = trigs(kb+1) |
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| 876 | s1 = trigs(kb+2) |
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| 877 | c2 = trigs(kc+1) |
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| 878 | s2 = trigs(kc+2) |
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| 879 | c3 = trigs(kd+1) |
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| 880 | s3 = trigs(kd+2) |
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| 881 | c4 = trigs(ke+1) |
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| 882 | s4 = trigs(ke+2) |
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| 883 | jbase = 0 |
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| 884 | DO l = 1, la |
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| 885 | i = ibase |
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| 886 | j = jbase |
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| 887 | !DIR$ IVDEP |
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| 888 | !CDIR NODEP |
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| 889 | !OCL NOVREC |
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| 890 | DO ijk = 1, lot |
---|
| 891 | a1 = (c1*a(ib+i)+s1*b(ib+i)) + (c4*a(ie+i)+s4*b(ie+i)) |
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| 892 | a3 = (c1*a(ib+i)+s1*b(ib+i)) - (c4*a(ie+i)+s4*b(ie+i)) |
---|
| 893 | a2 = (c2*a(ic+i)+s2*b(ic+i)) + (c3*a(id+i)+s3*b(id+i)) |
---|
| 894 | a4 = (c2*a(ic+i)+s2*b(ic+i)) - (c3*a(id+i)+s3*b(id+i)) |
---|
| 895 | b1 = (c1*b(ib+i)-s1*a(ib+i)) + (c4*b(ie+i)-s4*a(ie+i)) |
---|
| 896 | b3 = (c1*b(ib+i)-s1*a(ib+i)) - (c4*b(ie+i)-s4*a(ie+i)) |
---|
| 897 | b2 = (c2*b(ic+i)-s2*a(ic+i)) + (c3*b(id+i)-s3*a(id+i)) |
---|
| 898 | b4 = (c2*b(ic+i)-s2*a(ic+i)) - (c3*b(id+i)-s3*a(id+i)) |
---|
[1342] | 899 | a5 = a(ia+i) - 0.25_wp*(a1+a2) |
---|
[1] | 900 | a6 = qrt5*(a1-a2) |
---|
[1342] | 901 | b5 = b(ia+i) - 0.25_wp*(b1+b2) |
---|
[1] | 902 | b6 = qrt5*(b1-b2) |
---|
| 903 | a10 = a5 + a6 |
---|
| 904 | a20 = a5 - a6 |
---|
| 905 | b10 = b5 + b6 |
---|
| 906 | b20 = b5 - b6 |
---|
| 907 | a11 = sin72*b3 + sin36*b4 |
---|
| 908 | a21 = sin36*b3 - sin72*b4 |
---|
| 909 | b11 = sin72*a3 + sin36*a4 |
---|
| 910 | b21 = sin36*a3 - sin72*a4 |
---|
| 911 | c(ja+j) = a(ia+i) + (a1+a2) |
---|
| 912 | c(jb+j) = a10 + a11 |
---|
| 913 | c(je+j) = a10 - a11 |
---|
| 914 | c(jc+j) = a20 + a21 |
---|
| 915 | c(jd+j) = a20 - a21 |
---|
| 916 | d(ja+j) = b(ia+i) + (b1+b2) |
---|
| 917 | d(jb+j) = b10 - b11 |
---|
| 918 | d(je+j) = -(b10+b11) |
---|
| 919 | d(jc+j) = b20 - b21 |
---|
| 920 | d(jd+j) = -(b20+b21) |
---|
| 921 | i = i + inc3 |
---|
| 922 | j = j + inc4 |
---|
| 923 | END DO |
---|
| 924 | ibase = ibase + inc1 |
---|
| 925 | jbase = jbase + inc2 |
---|
| 926 | END DO |
---|
| 927 | ibase = ibase + ijump |
---|
| 928 | ja = ja + jink |
---|
| 929 | jb = jb + jink |
---|
| 930 | jc = jc + jink |
---|
| 931 | jd = jd - jink |
---|
| 932 | je = je - jink |
---|
| 933 | END DO |
---|
| 934 | IF (jb>jd) GO TO 170 |
---|
| 935 | 110 CONTINUE |
---|
| 936 | jbase = 0 |
---|
| 937 | DO l = 1, la |
---|
| 938 | i = ibase |
---|
| 939 | j = jbase |
---|
| 940 | !DIR$ IVDEP |
---|
| 941 | !CDIR NODEP |
---|
| 942 | !OCL NOVREC |
---|
| 943 | DO ijk = 1, lot |
---|
| 944 | a1 = a(ib+i) + a(ie+i) |
---|
| 945 | a3 = a(ib+i) - a(ie+i) |
---|
| 946 | a2 = a(ic+i) + a(id+i) |
---|
| 947 | a4 = a(ic+i) - a(id+i) |
---|
[1342] | 948 | a5 = a(ia+i) + 0.25_wp*(a3-a4) |
---|
[1] | 949 | a6 = qrt5*(a3+a4) |
---|
| 950 | c(ja+j) = a5 + a6 |
---|
| 951 | c(jb+j) = a5 - a6 |
---|
| 952 | c(jc+j) = a(ia+i) - (a3-a4) |
---|
| 953 | d(ja+j) = -sin36*a1 - sin72*a2 |
---|
| 954 | d(jb+j) = -sin72*a1 + sin36*a2 |
---|
| 955 | i = i + inc3 |
---|
| 956 | j = j + inc4 |
---|
| 957 | END DO |
---|
| 958 | ibase = ibase + inc1 |
---|
| 959 | jbase = jbase + inc2 |
---|
| 960 | END DO |
---|
| 961 | |
---|
| 962 | GO TO 170 |
---|
| 963 | 120 CONTINUE |
---|
[1342] | 964 | z = 1.0_wp/REAL(n,KIND=wp) |
---|
[1] | 965 | zqrt5 = z*qrt5 |
---|
| 966 | zsin36 = z*sin36 |
---|
| 967 | zsin72 = z*sin72 |
---|
| 968 | DO l = 1, la |
---|
| 969 | i = ibase |
---|
| 970 | j = jbase |
---|
| 971 | !DIR$ IVDEP |
---|
| 972 | !CDIR NODEP |
---|
| 973 | !OCL NOVREC |
---|
| 974 | DO ijk = 1, lot |
---|
| 975 | a1 = a(ib+i) + a(ie+i) |
---|
| 976 | a3 = a(ib+i) - a(ie+i) |
---|
| 977 | a2 = a(ic+i) + a(id+i) |
---|
| 978 | a4 = a(ic+i) - a(id+i) |
---|
[1342] | 979 | a5 = z*(a(ia+i)-0.25_wp*(a1+a2)) |
---|
[1] | 980 | a6 = zqrt5*(a1-a2) |
---|
| 981 | c(ja+j) = z*(a(ia+i)+(a1+a2)) |
---|
| 982 | c(jb+j) = a5 + a6 |
---|
| 983 | c(jc+j) = a5 - a6 |
---|
| 984 | d(jb+j) = -zsin72*a3 - zsin36*a4 |
---|
| 985 | d(jc+j) = -zsin36*a3 + zsin72*a4 |
---|
| 986 | i = i + inc3 |
---|
| 987 | j = j + inc4 |
---|
| 988 | END DO |
---|
| 989 | ibase = ibase + inc1 |
---|
| 990 | jbase = jbase + inc2 |
---|
| 991 | END DO |
---|
| 992 | GO TO 170 |
---|
| 993 | |
---|
| 994 | ! Coding for factor 6 |
---|
| 995 | |
---|
| 996 | 130 CONTINUE |
---|
| 997 | ia = 1 |
---|
| 998 | ib = ia + iink |
---|
| 999 | ic = ib + iink |
---|
| 1000 | id = ic + iink |
---|
| 1001 | ie = id + iink |
---|
| 1002 | if = ie + iink |
---|
| 1003 | ja = 1 |
---|
| 1004 | jb = ja + (2*m-la)*inc2 |
---|
| 1005 | jc = jb + 2*m*inc2 |
---|
| 1006 | jd = jc + 2*m*inc2 |
---|
| 1007 | je = jc |
---|
| 1008 | jf = jb |
---|
| 1009 | |
---|
| 1010 | IF (la==m) GO TO 150 |
---|
| 1011 | |
---|
| 1012 | DO l = 1, la |
---|
| 1013 | i = ibase |
---|
| 1014 | j = jbase |
---|
| 1015 | !DIR$ IVDEP |
---|
| 1016 | !CDIR NODEP |
---|
| 1017 | !OCL NOVREC |
---|
| 1018 | DO ijk = 1, lot |
---|
| 1019 | a11 = (a(ic+i)+a(if+i)) + (a(ib+i)+a(ie+i)) |
---|
| 1020 | c(ja+j) = (a(ia+i)+a(id+i)) + a11 |
---|
[1342] | 1021 | c(jc+j) = (a(ia+i)+a(id+i)-0.5_wp*a11) |
---|
[1] | 1022 | d(jc+j) = sin60*((a(ic+i)+a(if+i))-(a(ib+i)+a(ie+i))) |
---|
| 1023 | a11 = (a(ic+i)-a(if+i)) + (a(ie+i)-a(ib+i)) |
---|
[1342] | 1024 | c(jb+j) = (a(ia+i)-a(id+i)) - 0.5_wp*a11 |
---|
[1] | 1025 | d(jb+j) = sin60*((a(ie+i)-a(ib+i))-(a(ic+i)-a(if+i))) |
---|
| 1026 | c(jd+j) = (a(ia+i)-a(id+i)) + a11 |
---|
| 1027 | i = i + inc3 |
---|
| 1028 | j = j + inc4 |
---|
| 1029 | END DO |
---|
| 1030 | ibase = ibase + inc1 |
---|
| 1031 | jbase = jbase + inc2 |
---|
| 1032 | END DO |
---|
| 1033 | ja = ja + jink |
---|
| 1034 | jink = 2*jink |
---|
| 1035 | jb = jb + jink |
---|
| 1036 | jc = jc + jink |
---|
| 1037 | jd = jd - jink |
---|
| 1038 | je = je - jink |
---|
| 1039 | jf = jf - jink |
---|
| 1040 | ibase = ibase + ijump |
---|
| 1041 | ijump = 2*ijump + iink |
---|
| 1042 | IF (jc==jd) GO TO 140 |
---|
| 1043 | DO k = la, kstop, la |
---|
| 1044 | kb = k + k |
---|
| 1045 | kc = kb + kb |
---|
| 1046 | kd = kc + kb |
---|
| 1047 | ke = kd + kb |
---|
| 1048 | kf = ke + kb |
---|
| 1049 | c1 = trigs(kb+1) |
---|
| 1050 | s1 = trigs(kb+2) |
---|
| 1051 | c2 = trigs(kc+1) |
---|
| 1052 | s2 = trigs(kc+2) |
---|
| 1053 | c3 = trigs(kd+1) |
---|
| 1054 | s3 = trigs(kd+2) |
---|
| 1055 | c4 = trigs(ke+1) |
---|
| 1056 | s4 = trigs(ke+2) |
---|
| 1057 | c5 = trigs(kf+1) |
---|
| 1058 | s5 = trigs(kf+2) |
---|
| 1059 | jbase = 0 |
---|
| 1060 | DO l = 1, la |
---|
| 1061 | i = ibase |
---|
| 1062 | j = jbase |
---|
| 1063 | !DIR$ IVDEP |
---|
| 1064 | !CDIR NODEP |
---|
| 1065 | !OCL NOVREC |
---|
| 1066 | DO ijk = 1, lot |
---|
| 1067 | a1 = c1*a(ib+i) + s1*b(ib+i) |
---|
| 1068 | b1 = c1*b(ib+i) - s1*a(ib+i) |
---|
| 1069 | a2 = c2*a(ic+i) + s2*b(ic+i) |
---|
| 1070 | b2 = c2*b(ic+i) - s2*a(ic+i) |
---|
| 1071 | a3 = c3*a(id+i) + s3*b(id+i) |
---|
| 1072 | b3 = c3*b(id+i) - s3*a(id+i) |
---|
| 1073 | a4 = c4*a(ie+i) + s4*b(ie+i) |
---|
| 1074 | b4 = c4*b(ie+i) - s4*a(ie+i) |
---|
| 1075 | a5 = c5*a(if+i) + s5*b(if+i) |
---|
| 1076 | b5 = c5*b(if+i) - s5*a(if+i) |
---|
| 1077 | a11 = (a2+a5) + (a1+a4) |
---|
[1342] | 1078 | a20 = (a(ia+i)+a3) - 0.5_wp*a11 |
---|
[1] | 1079 | a21 = sin60*((a2+a5)-(a1+a4)) |
---|
| 1080 | b11 = (b2+b5) + (b1+b4) |
---|
[1342] | 1081 | b20 = (b(ia+i)+b3) - 0.5_wp*b11 |
---|
[1] | 1082 | b21 = sin60*((b2+b5)-(b1+b4)) |
---|
| 1083 | c(ja+j) = (a(ia+i)+a3) + a11 |
---|
| 1084 | d(ja+j) = (b(ia+i)+b3) + b11 |
---|
| 1085 | c(jc+j) = a20 - b21 |
---|
| 1086 | d(jc+j) = a21 + b20 |
---|
| 1087 | c(je+j) = a20 + b21 |
---|
| 1088 | d(je+j) = a21 - b20 |
---|
| 1089 | a11 = (a2-a5) + (a4-a1) |
---|
[1342] | 1090 | a20 = (a(ia+i)-a3) - 0.5_wp*a11 |
---|
[1] | 1091 | a21 = sin60*((a4-a1)-(a2-a5)) |
---|
| 1092 | b11 = (b5-b2) - (b4-b1) |
---|
[1342] | 1093 | b20 = (b3-b(ia+i)) - 0.5_wp*b11 |
---|
[1] | 1094 | b21 = sin60*((b5-b2)+(b4-b1)) |
---|
| 1095 | c(jb+j) = a20 - b21 |
---|
| 1096 | d(jb+j) = a21 - b20 |
---|
| 1097 | c(jd+j) = a11 + (a(ia+i)-a3) |
---|
| 1098 | d(jd+j) = b11 + (b3-b(ia+i)) |
---|
| 1099 | c(jf+j) = a20 + b21 |
---|
| 1100 | d(jf+j) = a21 + b20 |
---|
| 1101 | i = i + inc3 |
---|
| 1102 | j = j + inc4 |
---|
| 1103 | END DO |
---|
| 1104 | ibase = ibase + inc1 |
---|
| 1105 | jbase = jbase + inc2 |
---|
| 1106 | END DO |
---|
| 1107 | ibase = ibase + ijump |
---|
| 1108 | ja = ja + jink |
---|
| 1109 | jb = jb + jink |
---|
| 1110 | jc = jc + jink |
---|
| 1111 | jd = jd - jink |
---|
| 1112 | je = je - jink |
---|
| 1113 | jf = jf - jink |
---|
| 1114 | END DO |
---|
| 1115 | IF (jc>jd) GO TO 170 |
---|
| 1116 | 140 CONTINUE |
---|
| 1117 | jbase = 0 |
---|
| 1118 | DO l = 1, la |
---|
| 1119 | i = ibase |
---|
| 1120 | j = jbase |
---|
| 1121 | !DIR$ IVDEP |
---|
| 1122 | !CDIR NODEP |
---|
| 1123 | !OCL NOVREC |
---|
| 1124 | DO ijk = 1, lot |
---|
[1342] | 1125 | c(ja+j) = (a(ia+i)+0.5_wp*(a(ic+i)-a(ie+i))) + sin60*(a(ib+i)-a(if+i)) |
---|
| 1126 | d(ja+j) = -(a(id+i)+0.5_wp*(a(ib+i)+a(if+i))) - sin60*(a(ic+i)+a(ie+i)) |
---|
[1] | 1127 | c(jb+j) = a(ia+i) - (a(ic+i)-a(ie+i)) |
---|
| 1128 | d(jb+j) = a(id+i) - (a(ib+i)+a(if+i)) |
---|
[1342] | 1129 | c(jc+j) = (a(ia+i)+0.5_wp*(a(ic+i)-a(ie+i))) - sin60*(a(ib+i)-a(if+i)) |
---|
| 1130 | d(jc+j) = -(a(id+i)+0.5_wp*(a(ib+i)+a(if+i))) + sin60*(a(ic+i)+a(ie+i)) |
---|
[1] | 1131 | i = i + inc3 |
---|
| 1132 | j = j + inc4 |
---|
| 1133 | END DO |
---|
| 1134 | ibase = ibase + inc1 |
---|
| 1135 | jbase = jbase + inc2 |
---|
| 1136 | END DO |
---|
| 1137 | |
---|
| 1138 | GO TO 170 |
---|
| 1139 | 150 CONTINUE |
---|
[1342] | 1140 | z = 1.0_wp/REAL(n,KIND=wp) |
---|
[1] | 1141 | zsin60 = z*sin60 |
---|
| 1142 | DO l = 1, la |
---|
| 1143 | i = ibase |
---|
| 1144 | j = jbase |
---|
| 1145 | !DIR$ IVDEP |
---|
| 1146 | !CDIR NODEP |
---|
| 1147 | !OCL NOVREC |
---|
| 1148 | DO ijk = 1, lot |
---|
| 1149 | a11 = (a(ic+i)+a(if+i)) + (a(ib+i)+a(ie+i)) |
---|
| 1150 | c(ja+j) = z*((a(ia+i)+a(id+i))+a11) |
---|
[1342] | 1151 | c(jc+j) = z*((a(ia+i)+a(id+i))-0.5_wp*a11) |
---|
[1] | 1152 | d(jc+j) = zsin60*((a(ic+i)+a(if+i))-(a(ib+i)+a(ie+i))) |
---|
| 1153 | a11 = (a(ic+i)-a(if+i)) + (a(ie+i)-a(ib+i)) |
---|
[1342] | 1154 | c(jb+j) = z*((a(ia+i)-a(id+i))-0.5_wp*a11) |
---|
[1] | 1155 | d(jb+j) = zsin60*((a(ie+i)-a(ib+i))-(a(ic+i)-a(if+i))) |
---|
| 1156 | c(jd+j) = z*((a(ia+i)-a(id+i))+a11) |
---|
| 1157 | i = i + inc3 |
---|
| 1158 | j = j + inc4 |
---|
| 1159 | END DO |
---|
| 1160 | ibase = ibase + inc1 |
---|
| 1161 | jbase = jbase + inc2 |
---|
| 1162 | END DO |
---|
| 1163 | GO TO 170 |
---|
| 1164 | |
---|
| 1165 | ! Coding for factor 8 |
---|
| 1166 | |
---|
| 1167 | 160 CONTINUE |
---|
| 1168 | ibad = 3 |
---|
| 1169 | IF (la/=m) GO TO 180 |
---|
| 1170 | ia = 1 |
---|
| 1171 | ib = ia + iink |
---|
| 1172 | ic = ib + iink |
---|
| 1173 | id = ic + iink |
---|
| 1174 | ie = id + iink |
---|
| 1175 | if = ie + iink |
---|
| 1176 | ig = if + iink |
---|
| 1177 | ih = ig + iink |
---|
| 1178 | ja = 1 |
---|
| 1179 | jb = ja + la*inc2 |
---|
| 1180 | jc = jb + 2*m*inc2 |
---|
| 1181 | jd = jc + 2*m*inc2 |
---|
| 1182 | je = jd + 2*m*inc2 |
---|
[1342] | 1183 | z = 1.0_wp/REAL(n,KIND=wp) |
---|
[1322] | 1184 | zsin45 = z*SQRT(0.5_wp) |
---|
[1] | 1185 | |
---|
| 1186 | DO l = 1, la |
---|
| 1187 | i = ibase |
---|
| 1188 | j = jbase |
---|
| 1189 | !DIR$ IVDEP |
---|
| 1190 | !CDIR NODEP |
---|
| 1191 | !OCL NOVREC |
---|
| 1192 | DO ijk = 1, lot |
---|
| 1193 | c(ja+j) = z*(((a(ia+i)+a(ie+i))+(a(ic+i)+a(ig+i)))+((a(id+i)+ & |
---|
| 1194 | & a(ih+i))+(a(ib+i)+a(if+i)))) |
---|
| 1195 | c(je+j) = z*(((a(ia+i)+a(ie+i))+(a(ic+i)+a(ig+i)))-((a(id+i)+ & |
---|
| 1196 | & a(ih+i))+(a(ib+i)+a(if+i)))) |
---|
| 1197 | c(jc+j) = z*((a(ia+i)+a(ie+i))-(a(ic+i)+a(ig+i))) |
---|
| 1198 | d(jc+j) = z*((a(id+i)+a(ih+i))-(a(ib+i)+a(if+i))) |
---|
| 1199 | c(jb+j) = z*(a(ia+i)-a(ie+i)) + zsin45*((a(ih+i)-a(id+i))-(a(if+ & |
---|
| 1200 | & i)-a(ib+i))) |
---|
| 1201 | c(jd+j) = z*(a(ia+i)-a(ie+i)) - zsin45*((a(ih+i)-a(id+i))-(a(if+ & |
---|
| 1202 | & i)-a(ib+i))) |
---|
| 1203 | d(jb+j) = zsin45*((a(ih+i)-a(id+i))+(a(if+i)-a(ib+i))) + & |
---|
| 1204 | & z*(a(ig+i)-a(ic+i)) |
---|
| 1205 | d(jd+j) = zsin45*((a(ih+i)-a(id+i))+(a(if+i)-a(ib+i))) - & |
---|
| 1206 | & z*(a(ig+i)-a(ic+i)) |
---|
| 1207 | i = i + inc3 |
---|
| 1208 | j = j + inc4 |
---|
| 1209 | END DO |
---|
| 1210 | ibase = ibase + inc1 |
---|
| 1211 | jbase = jbase + inc2 |
---|
| 1212 | END DO |
---|
| 1213 | |
---|
| 1214 | ! Return |
---|
| 1215 | |
---|
| 1216 | 170 CONTINUE |
---|
| 1217 | ibad = 0 |
---|
| 1218 | 180 CONTINUE |
---|
| 1219 | ierr = ibad |
---|
| 1220 | RETURN |
---|
| 1221 | END SUBROUTINE qpassm |
---|
| 1222 | |
---|
[1682] | 1223 | !------------------------------------------------------------------------------! |
---|
| 1224 | ! Description: |
---|
| 1225 | ! ------------ |
---|
| 1226 | !> @todo Missing subroutine description. |
---|
| 1227 | !------------------------------------------------------------------------------! |
---|
[1] | 1228 | SUBROUTINE rpassm(a,b,c,d,trigs,inc1,inc2,inc3,inc4,lot,n,ifac,la,ierr) |
---|
| 1229 | ! Dimension a(n),b(n),c(n),d(n),trigs(n) |
---|
| 1230 | |
---|
[1320] | 1231 | USE kinds |
---|
| 1232 | |
---|
[1] | 1233 | IMPLICIT NONE |
---|
| 1234 | |
---|
| 1235 | ! Scalar arguments |
---|
[1682] | 1236 | INTEGER(iwp) :: ierr !< |
---|
| 1237 | INTEGER(iwp) :: ifac !< |
---|
| 1238 | INTEGER(iwp) :: inc1 !< |
---|
| 1239 | INTEGER(iwp) :: inc2 !< |
---|
| 1240 | INTEGER(iwp) :: inc3 !< |
---|
| 1241 | INTEGER(iwp) :: inc4 !< |
---|
| 1242 | INTEGER(iwp) :: la !< |
---|
| 1243 | INTEGER(iwp) :: lot !< |
---|
| 1244 | INTEGER(iwp) :: n !< |
---|
[1] | 1245 | |
---|
| 1246 | ! Array arguments |
---|
[1682] | 1247 | REAL(wp) :: a(*) !< |
---|
| 1248 | REAL(wp) :: b(*) !< |
---|
| 1249 | REAL(wp) :: c(*) !< |
---|
| 1250 | REAL(wp) :: d(*) !< |
---|
| 1251 | REAL(wp) :: trigs(*) !< |
---|
[1] | 1252 | |
---|
| 1253 | ! Local scalars: |
---|
[1682] | 1254 | REAL(wp) :: c1 !< |
---|
| 1255 | REAL(wp) :: c2 !< |
---|
| 1256 | REAL(wp) :: c3 !< |
---|
| 1257 | REAL(wp) :: c4 !< |
---|
| 1258 | REAL(wp) :: c5 !< |
---|
| 1259 | REAL(wp) :: qqrt5 !< |
---|
| 1260 | REAL(wp) :: qrt5 !< |
---|
| 1261 | REAL(wp) :: s1 !< |
---|
| 1262 | REAL(wp) :: s2 !< |
---|
| 1263 | REAL(wp) :: s3 !< |
---|
| 1264 | REAL(wp) :: s4 !< |
---|
| 1265 | REAL(wp) :: s5 !< |
---|
| 1266 | REAL(wp) :: sin36 !< |
---|
| 1267 | REAL(wp) :: sin45 !< |
---|
| 1268 | REAL(wp) :: sin60 !< |
---|
| 1269 | REAL(wp) :: sin72 !< |
---|
| 1270 | REAL(wp) :: ssin36 !< |
---|
| 1271 | REAL(wp) :: ssin45 !< |
---|
| 1272 | REAL(wp) :: ssin60 !< |
---|
| 1273 | REAL(wp) :: ssin72 !< |
---|
[1] | 1274 | |
---|
[1682] | 1275 | INTEGER(iwp) :: i !< |
---|
| 1276 | INTEGER(iwp) :: ia !< |
---|
| 1277 | INTEGER(iwp) :: ib !< |
---|
| 1278 | INTEGER(iwp) :: ibad !< |
---|
| 1279 | INTEGER(iwp) :: ibase !< |
---|
| 1280 | INTEGER(iwp) :: ic !< |
---|
| 1281 | INTEGER(iwp) :: id !< |
---|
| 1282 | INTEGER(iwp) :: ie !< |
---|
| 1283 | INTEGER(iwp) :: if !< |
---|
| 1284 | INTEGER(iwp) :: igo !< |
---|
| 1285 | INTEGER(iwp) :: iink !< |
---|
| 1286 | INTEGER(iwp) :: ijk !< |
---|
| 1287 | INTEGER(iwp) :: j !< |
---|
| 1288 | INTEGER(iwp) :: ja !< |
---|
| 1289 | INTEGER(iwp) :: jb !< |
---|
| 1290 | INTEGER(iwp) :: jbase !< |
---|
| 1291 | INTEGER(iwp) :: jc !< |
---|
| 1292 | INTEGER(iwp) :: jd !< |
---|
| 1293 | INTEGER(iwp) :: je !< |
---|
| 1294 | INTEGER(iwp) :: jf !< |
---|
| 1295 | INTEGER(iwp) :: jg !< |
---|
| 1296 | INTEGER(iwp) :: jh !< |
---|
| 1297 | INTEGER(iwp) :: jink !< |
---|
| 1298 | INTEGER(iwp) :: jump !< |
---|
| 1299 | INTEGER(iwp) :: k !< |
---|
| 1300 | INTEGER(iwp) :: kb !< |
---|
| 1301 | INTEGER(iwp) :: kc !< |
---|
| 1302 | INTEGER(iwp) :: kd !< |
---|
| 1303 | INTEGER(iwp) :: ke !< |
---|
| 1304 | INTEGER(iwp) :: kf !< |
---|
| 1305 | INTEGER(iwp) :: kstop !< |
---|
| 1306 | INTEGER(iwp) :: l !< |
---|
| 1307 | INTEGER(iwp) :: m !< |
---|
[1320] | 1308 | |
---|
[1] | 1309 | ! Local arrays: |
---|
[1682] | 1310 | REAL(wp) :: a10(nfft) !< |
---|
| 1311 | REAL(wp) :: a11(nfft) !< |
---|
| 1312 | REAL(wp) :: a20(nfft) !< |
---|
| 1313 | REAL(wp) :: a21(nfft) !< |
---|
| 1314 | REAL(wp) :: b10(nfft) !< |
---|
| 1315 | REAL(wp) :: b11(nfft) !< |
---|
| 1316 | REAL(wp) :: b20(nfft) !< |
---|
| 1317 | REAL(wp) :: b21(nfft) !< |
---|
[1] | 1318 | |
---|
| 1319 | ! Intrinsic functions |
---|
[1320] | 1320 | ! INTRINSIC SQRT |
---|
[1] | 1321 | |
---|
| 1322 | ! Data statements |
---|
[1320] | 1323 | DATA sin36/0.587785252292473_wp/, sin72/0.951056516295154_wp/, & |
---|
| 1324 | & qrt5/0.559016994374947_wp/, sin60/0.866025403784437_wp/ |
---|
[1] | 1325 | |
---|
| 1326 | |
---|
| 1327 | ! Executable statements |
---|
| 1328 | |
---|
| 1329 | m = n/ifac |
---|
| 1330 | iink = la*inc1 |
---|
| 1331 | jink = la*inc2 |
---|
| 1332 | jump = (ifac-1)*jink |
---|
| 1333 | kstop = (n-ifac)/(2*ifac) |
---|
| 1334 | |
---|
| 1335 | ibad = 1 |
---|
| 1336 | IF (lot>nfft) GO TO 180 |
---|
| 1337 | ibase = 0 |
---|
| 1338 | jbase = 0 |
---|
| 1339 | igo = ifac - 1 |
---|
| 1340 | IF (igo==7) igo = 6 |
---|
| 1341 | ibad = 2 |
---|
| 1342 | IF (igo<1 .OR. igo>6) GO TO 180 |
---|
| 1343 | GO TO (10,40,70,100,130,160) igo |
---|
| 1344 | |
---|
| 1345 | ! Coding for factor 2 |
---|
| 1346 | |
---|
| 1347 | 10 CONTINUE |
---|
| 1348 | ia = 1 |
---|
| 1349 | ib = ia + (2*m-la)*inc1 |
---|
| 1350 | ja = 1 |
---|
| 1351 | jb = ja + jink |
---|
| 1352 | |
---|
| 1353 | IF (la==m) GO TO 30 |
---|
| 1354 | |
---|
| 1355 | DO l = 1, la |
---|
| 1356 | i = ibase |
---|
| 1357 | j = jbase |
---|
| 1358 | !DIR$ IVDEP |
---|
| 1359 | !CDIR NODEP |
---|
| 1360 | !OCL NOVREC |
---|
| 1361 | DO ijk = 1, lot |
---|
| 1362 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1363 | c(jb+j) = a(ia+i) - a(ib+i) |
---|
| 1364 | i = i + inc3 |
---|
| 1365 | j = j + inc4 |
---|
| 1366 | END DO |
---|
| 1367 | ibase = ibase + inc1 |
---|
| 1368 | jbase = jbase + inc2 |
---|
| 1369 | END DO |
---|
| 1370 | ia = ia + iink |
---|
| 1371 | iink = 2*iink |
---|
| 1372 | ib = ib - iink |
---|
| 1373 | ibase = 0 |
---|
| 1374 | jbase = jbase + jump |
---|
| 1375 | jump = 2*jump + jink |
---|
| 1376 | IF (ia==ib) GO TO 20 |
---|
| 1377 | DO k = la, kstop, la |
---|
| 1378 | kb = k + k |
---|
| 1379 | c1 = trigs(kb+1) |
---|
| 1380 | s1 = trigs(kb+2) |
---|
| 1381 | ibase = 0 |
---|
| 1382 | DO l = 1, la |
---|
| 1383 | i = ibase |
---|
| 1384 | j = jbase |
---|
| 1385 | !DIR$ IVDEP |
---|
| 1386 | !CDIR NODEP |
---|
| 1387 | !OCL NOVREC |
---|
| 1388 | DO ijk = 1, lot |
---|
| 1389 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1390 | d(ja+j) = b(ia+i) - b(ib+i) |
---|
| 1391 | c(jb+j) = c1*(a(ia+i)-a(ib+i)) - s1*(b(ia+i)+b(ib+i)) |
---|
| 1392 | d(jb+j) = s1*(a(ia+i)-a(ib+i)) + c1*(b(ia+i)+b(ib+i)) |
---|
| 1393 | i = i + inc3 |
---|
| 1394 | j = j + inc4 |
---|
| 1395 | END DO |
---|
| 1396 | ibase = ibase + inc1 |
---|
| 1397 | jbase = jbase + inc2 |
---|
| 1398 | END DO |
---|
| 1399 | ia = ia + iink |
---|
| 1400 | ib = ib - iink |
---|
| 1401 | jbase = jbase + jump |
---|
| 1402 | END DO |
---|
| 1403 | IF (ia>ib) GO TO 170 |
---|
| 1404 | 20 CONTINUE |
---|
| 1405 | ibase = 0 |
---|
| 1406 | DO l = 1, la |
---|
| 1407 | i = ibase |
---|
| 1408 | j = jbase |
---|
| 1409 | !DIR$ IVDEP |
---|
| 1410 | !CDIR NODEP |
---|
| 1411 | !OCL NOVREC |
---|
| 1412 | DO ijk = 1, lot |
---|
| 1413 | c(ja+j) = a(ia+i) |
---|
| 1414 | c(jb+j) = -b(ia+i) |
---|
| 1415 | i = i + inc3 |
---|
| 1416 | j = j + inc4 |
---|
| 1417 | END DO |
---|
| 1418 | ibase = ibase + inc1 |
---|
| 1419 | jbase = jbase + inc2 |
---|
| 1420 | END DO |
---|
| 1421 | |
---|
| 1422 | GO TO 170 |
---|
| 1423 | 30 CONTINUE |
---|
| 1424 | DO l = 1, la |
---|
| 1425 | i = ibase |
---|
| 1426 | j = jbase |
---|
| 1427 | !DIR$ IVDEP |
---|
| 1428 | !CDIR NODEP |
---|
| 1429 | !OCL NOVREC |
---|
| 1430 | DO ijk = 1, lot |
---|
[1342] | 1431 | c(ja+j) = 2.0_wp*(a(ia+i)+a(ib+i)) |
---|
| 1432 | c(jb+j) = 2.0_wp*(a(ia+i)-a(ib+i)) |
---|
[1] | 1433 | i = i + inc3 |
---|
| 1434 | j = j + inc4 |
---|
| 1435 | END DO |
---|
| 1436 | ibase = ibase + inc1 |
---|
| 1437 | jbase = jbase + inc2 |
---|
| 1438 | END DO |
---|
| 1439 | GO TO 170 |
---|
| 1440 | |
---|
| 1441 | ! Coding for factor 3 |
---|
| 1442 | |
---|
| 1443 | 40 CONTINUE |
---|
| 1444 | ia = 1 |
---|
| 1445 | ib = ia + (2*m-la)*inc1 |
---|
| 1446 | ic = ib |
---|
| 1447 | ja = 1 |
---|
| 1448 | jb = ja + jink |
---|
| 1449 | jc = jb + jink |
---|
| 1450 | |
---|
| 1451 | IF (la==m) GO TO 60 |
---|
| 1452 | |
---|
| 1453 | DO l = 1, la |
---|
| 1454 | i = ibase |
---|
| 1455 | j = jbase |
---|
| 1456 | !DIR$ IVDEP |
---|
| 1457 | !CDIR NODEP |
---|
| 1458 | !OCL NOVREC |
---|
| 1459 | DO ijk = 1, lot |
---|
| 1460 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
[1342] | 1461 | c(jb+j) = (a(ia+i)-0.5_wp*a(ib+i)) - (sin60*(b(ib+i))) |
---|
| 1462 | c(jc+j) = (a(ia+i)-0.5_wp*a(ib+i)) + (sin60*(b(ib+i))) |
---|
[1] | 1463 | i = i + inc3 |
---|
| 1464 | j = j + inc4 |
---|
| 1465 | END DO |
---|
| 1466 | ibase = ibase + inc1 |
---|
| 1467 | jbase = jbase + inc2 |
---|
| 1468 | END DO |
---|
| 1469 | ia = ia + iink |
---|
| 1470 | iink = 2*iink |
---|
| 1471 | ib = ib + iink |
---|
| 1472 | ic = ic - iink |
---|
| 1473 | jbase = jbase + jump |
---|
| 1474 | jump = 2*jump + jink |
---|
| 1475 | IF (ia==ic) GO TO 50 |
---|
| 1476 | DO k = la, kstop, la |
---|
| 1477 | kb = k + k |
---|
| 1478 | kc = kb + kb |
---|
| 1479 | c1 = trigs(kb+1) |
---|
| 1480 | s1 = trigs(kb+2) |
---|
| 1481 | c2 = trigs(kc+1) |
---|
| 1482 | s2 = trigs(kc+2) |
---|
| 1483 | ibase = 0 |
---|
| 1484 | DO l = 1, la |
---|
| 1485 | i = ibase |
---|
| 1486 | j = jbase |
---|
| 1487 | !DIR$ IVDEP |
---|
| 1488 | !CDIR NODEP |
---|
| 1489 | !OCL NOVREC |
---|
| 1490 | DO ijk = 1, lot |
---|
| 1491 | c(ja+j) = a(ia+i) + (a(ib+i)+a(ic+i)) |
---|
| 1492 | d(ja+j) = b(ia+i) + (b(ib+i)-b(ic+i)) |
---|
[1342] | 1493 | c(jb+j) = c1*((a(ia+i)-0.5_wp*(a(ib+i)+a(ic+i)))-(sin60*(b(ib+i)+ & |
---|
| 1494 | & b(ic+i)))) & |
---|
| 1495 | & - s1*((b(ia+i)-0.5_wp*(b(ib+i)-b(ic+i)))+(sin60*(a(ib+i)- & |
---|
[1] | 1496 | & a(ic+i)))) |
---|
[1342] | 1497 | d(jb+j) = s1*((a(ia+i)-0.5_wp*(a(ib+i)+a(ic+i)))-(sin60*(b(ib+i)+ & |
---|
| 1498 | & b(ic+i)))) & |
---|
| 1499 | & + c1*((b(ia+i)-0.5_wp*(b(ib+i)-b(ic+i)))+(sin60*(a(ib+i)- & |
---|
[1] | 1500 | & a(ic+i)))) |
---|
[1342] | 1501 | c(jc+j) = c2*((a(ia+i)-0.5_wp*(a(ib+i)+a(ic+i)))+(sin60*(b(ib+i)+ & |
---|
| 1502 | & b(ic+i)))) & |
---|
| 1503 | & - s2*((b(ia+i)-0.5_wp*(b(ib+i)-b(ic+i)))-(sin60*(a(ib+i)- & |
---|
[1] | 1504 | & a(ic+i)))) |
---|
[1342] | 1505 | d(jc+j) = s2*((a(ia+i)-0.5_wp*(a(ib+i)+a(ic+i)))+(sin60*(b(ib+i)+ & |
---|
| 1506 | & b(ic+i)))) & |
---|
| 1507 | & + c2*((b(ia+i)-0.5_wp*(b(ib+i)-b(ic+i)))-(sin60*(a(ib+i)- & |
---|
[1] | 1508 | & a(ic+i)))) |
---|
| 1509 | i = i + inc3 |
---|
| 1510 | j = j + inc4 |
---|
| 1511 | END DO |
---|
| 1512 | ibase = ibase + inc1 |
---|
| 1513 | jbase = jbase + inc2 |
---|
| 1514 | END DO |
---|
| 1515 | ia = ia + iink |
---|
| 1516 | ib = ib + iink |
---|
| 1517 | ic = ic - iink |
---|
| 1518 | jbase = jbase + jump |
---|
| 1519 | END DO |
---|
| 1520 | IF (ia>ic) GO TO 170 |
---|
| 1521 | 50 CONTINUE |
---|
| 1522 | ibase = 0 |
---|
| 1523 | DO l = 1, la |
---|
| 1524 | i = ibase |
---|
| 1525 | j = jbase |
---|
| 1526 | !DIR$ IVDEP |
---|
| 1527 | !CDIR NODEP |
---|
| 1528 | !OCL NOVREC |
---|
| 1529 | DO ijk = 1, lot |
---|
| 1530 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
[1342] | 1531 | c(jb+j) = (0.5_wp*a(ia+i)-a(ib+i)) - (sin60*b(ia+i)) |
---|
| 1532 | c(jc+j) = -(0.5_wp*a(ia+i)-a(ib+i)) - (sin60*b(ia+i)) |
---|
[1] | 1533 | i = i + inc3 |
---|
| 1534 | j = j + inc4 |
---|
| 1535 | END DO |
---|
| 1536 | ibase = ibase + inc1 |
---|
| 1537 | jbase = jbase + inc2 |
---|
| 1538 | END DO |
---|
| 1539 | |
---|
| 1540 | GO TO 170 |
---|
| 1541 | 60 CONTINUE |
---|
[1342] | 1542 | ssin60 = 2.0_wp*sin60 |
---|
[1] | 1543 | DO l = 1, la |
---|
| 1544 | i = ibase |
---|
| 1545 | j = jbase |
---|
| 1546 | !DIR$ IVDEP |
---|
| 1547 | !CDIR NODEP |
---|
| 1548 | !OCL NOVREC |
---|
| 1549 | DO ijk = 1, lot |
---|
[1342] | 1550 | c(ja+j) = 2.0_wp*(a(ia+i)+a(ib+i)) |
---|
| 1551 | c(jb+j) = (2.0_wp*a(ia+i)-a(ib+i)) - (ssin60*b(ib+i)) |
---|
| 1552 | c(jc+j) = (2.0_wp*a(ia+i)-a(ib+i)) + (ssin60*b(ib+i)) |
---|
[1] | 1553 | i = i + inc3 |
---|
| 1554 | j = j + inc4 |
---|
| 1555 | END DO |
---|
| 1556 | ibase = ibase + inc1 |
---|
| 1557 | jbase = jbase + inc2 |
---|
| 1558 | END DO |
---|
| 1559 | GO TO 170 |
---|
| 1560 | |
---|
| 1561 | ! Coding for factor 4 |
---|
| 1562 | |
---|
| 1563 | 70 CONTINUE |
---|
| 1564 | ia = 1 |
---|
| 1565 | ib = ia + (2*m-la)*inc1 |
---|
| 1566 | ic = ib + 2*m*inc1 |
---|
| 1567 | id = ib |
---|
| 1568 | ja = 1 |
---|
| 1569 | jb = ja + jink |
---|
| 1570 | jc = jb + jink |
---|
| 1571 | jd = jc + jink |
---|
| 1572 | |
---|
| 1573 | IF (la==m) GO TO 90 |
---|
| 1574 | |
---|
| 1575 | DO l = 1, la |
---|
| 1576 | i = ibase |
---|
| 1577 | j = jbase |
---|
| 1578 | !DIR$ IVDEP |
---|
| 1579 | !CDIR NODEP |
---|
| 1580 | !OCL NOVREC |
---|
| 1581 | DO ijk = 1, lot |
---|
| 1582 | c(ja+j) = (a(ia+i)+a(ic+i)) + a(ib+i) |
---|
| 1583 | c(jb+j) = (a(ia+i)-a(ic+i)) - b(ib+i) |
---|
| 1584 | c(jc+j) = (a(ia+i)+a(ic+i)) - a(ib+i) |
---|
| 1585 | c(jd+j) = (a(ia+i)-a(ic+i)) + b(ib+i) |
---|
| 1586 | i = i + inc3 |
---|
| 1587 | j = j + inc4 |
---|
| 1588 | END DO |
---|
| 1589 | ibase = ibase + inc1 |
---|
| 1590 | jbase = jbase + inc2 |
---|
| 1591 | END DO |
---|
| 1592 | ia = ia + iink |
---|
| 1593 | iink = 2*iink |
---|
| 1594 | ib = ib + iink |
---|
| 1595 | ic = ic - iink |
---|
| 1596 | id = id - iink |
---|
| 1597 | jbase = jbase + jump |
---|
| 1598 | jump = 2*jump + jink |
---|
| 1599 | IF (ib==ic) GO TO 80 |
---|
| 1600 | DO k = la, kstop, la |
---|
| 1601 | kb = k + k |
---|
| 1602 | kc = kb + kb |
---|
| 1603 | kd = kc + kb |
---|
| 1604 | c1 = trigs(kb+1) |
---|
| 1605 | s1 = trigs(kb+2) |
---|
| 1606 | c2 = trigs(kc+1) |
---|
| 1607 | s2 = trigs(kc+2) |
---|
| 1608 | c3 = trigs(kd+1) |
---|
| 1609 | s3 = trigs(kd+2) |
---|
| 1610 | ibase = 0 |
---|
| 1611 | DO l = 1, la |
---|
| 1612 | i = ibase |
---|
| 1613 | j = jbase |
---|
| 1614 | !DIR$ IVDEP |
---|
| 1615 | !CDIR NODEP |
---|
| 1616 | !OCL NOVREC |
---|
| 1617 | DO ijk = 1, lot |
---|
| 1618 | c(ja+j) = (a(ia+i)+a(ic+i)) + (a(ib+i)+a(id+i)) |
---|
| 1619 | d(ja+j) = (b(ia+i)-b(ic+i)) + (b(ib+i)-b(id+i)) |
---|
| 1620 | c(jc+j) = c2*((a(ia+i)+a(ic+i))-(a(ib+i)+a(id+i))) - s2*((b(ia+ & |
---|
| 1621 | & i)-b(ic+i))-(b(ib+i)-b(id+i))) |
---|
| 1622 | d(jc+j) = s2*((a(ia+i)+a(ic+i))-(a(ib+i)+a(id+i))) + c2*((b(ia+ & |
---|
| 1623 | & i)-b(ic+i))-(b(ib+i)-b(id+i))) |
---|
| 1624 | c(jb+j) = c1*((a(ia+i)-a(ic+i))-(b(ib+i)+b(id+i))) - s1*((b(ia+ & |
---|
| 1625 | & i)+b(ic+i))+(a(ib+i)-a(id+i))) |
---|
| 1626 | d(jb+j) = s1*((a(ia+i)-a(ic+i))-(b(ib+i)+b(id+i))) + c1*((b(ia+ & |
---|
| 1627 | & i)+b(ic+i))+(a(ib+i)-a(id+i))) |
---|
| 1628 | c(jd+j) = c3*((a(ia+i)-a(ic+i))+(b(ib+i)+b(id+i))) - s3*((b(ia+ & |
---|
| 1629 | & i)+b(ic+i))-(a(ib+i)-a(id+i))) |
---|
| 1630 | d(jd+j) = s3*((a(ia+i)-a(ic+i))+(b(ib+i)+b(id+i))) + c3*((b(ia+ & |
---|
| 1631 | & i)+b(ic+i))-(a(ib+i)-a(id+i))) |
---|
| 1632 | i = i + inc3 |
---|
| 1633 | j = j + inc4 |
---|
| 1634 | END DO |
---|
| 1635 | ibase = ibase + inc1 |
---|
| 1636 | jbase = jbase + inc2 |
---|
| 1637 | END DO |
---|
| 1638 | ia = ia + iink |
---|
| 1639 | ib = ib + iink |
---|
| 1640 | ic = ic - iink |
---|
| 1641 | id = id - iink |
---|
| 1642 | jbase = jbase + jump |
---|
| 1643 | END DO |
---|
| 1644 | IF (ib>ic) GO TO 170 |
---|
| 1645 | 80 CONTINUE |
---|
| 1646 | ibase = 0 |
---|
[1322] | 1647 | sin45 = SQRT(0.5_wp) |
---|
[1] | 1648 | DO l = 1, la |
---|
| 1649 | i = ibase |
---|
| 1650 | j = jbase |
---|
| 1651 | !DIR$ IVDEP |
---|
| 1652 | !CDIR NODEP |
---|
| 1653 | !OCL NOVREC |
---|
| 1654 | DO ijk = 1, lot |
---|
| 1655 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1656 | c(jb+j) = sin45*((a(ia+i)-a(ib+i))-(b(ia+i)+b(ib+i))) |
---|
| 1657 | c(jc+j) = b(ib+i) - b(ia+i) |
---|
| 1658 | c(jd+j) = -sin45*((a(ia+i)-a(ib+i))+(b(ia+i)+b(ib+i))) |
---|
| 1659 | i = i + inc3 |
---|
| 1660 | j = j + inc4 |
---|
| 1661 | END DO |
---|
| 1662 | ibase = ibase + inc1 |
---|
| 1663 | jbase = jbase + inc2 |
---|
| 1664 | END DO |
---|
| 1665 | |
---|
| 1666 | GO TO 170 |
---|
| 1667 | 90 CONTINUE |
---|
| 1668 | DO l = 1, la |
---|
| 1669 | i = ibase |
---|
| 1670 | j = jbase |
---|
| 1671 | !DIR$ IVDEP |
---|
| 1672 | !CDIR NODEP |
---|
| 1673 | !OCL NOVREC |
---|
| 1674 | DO ijk = 1, lot |
---|
[1342] | 1675 | c(ja+j) = 2.0_wp*((a(ia+i)+a(ic+i))+a(ib+i)) |
---|
| 1676 | c(jb+j) = 2.0_wp*((a(ia+i)-a(ic+i))-b(ib+i)) |
---|
| 1677 | c(jc+j) = 2.0_wp*((a(ia+i)+a(ic+i))-a(ib+i)) |
---|
| 1678 | c(jd+j) = 2.0_wp*((a(ia+i)-a(ic+i))+b(ib+i)) |
---|
[1] | 1679 | i = i + inc3 |
---|
| 1680 | j = j + inc4 |
---|
| 1681 | END DO |
---|
| 1682 | ibase = ibase + inc1 |
---|
| 1683 | jbase = jbase + inc2 |
---|
| 1684 | END DO |
---|
| 1685 | |
---|
| 1686 | ! Coding for factor 5 |
---|
| 1687 | |
---|
| 1688 | GO TO 170 |
---|
| 1689 | 100 CONTINUE |
---|
| 1690 | ia = 1 |
---|
| 1691 | ib = ia + (2*m-la)*inc1 |
---|
| 1692 | ic = ib + 2*m*inc1 |
---|
| 1693 | id = ic |
---|
| 1694 | ie = ib |
---|
| 1695 | ja = 1 |
---|
| 1696 | jb = ja + jink |
---|
| 1697 | jc = jb + jink |
---|
| 1698 | jd = jc + jink |
---|
| 1699 | je = jd + jink |
---|
| 1700 | |
---|
| 1701 | IF (la==m) GO TO 120 |
---|
| 1702 | |
---|
| 1703 | DO l = 1, la |
---|
| 1704 | i = ibase |
---|
| 1705 | j = jbase |
---|
| 1706 | !DIR$ IVDEP |
---|
| 1707 | !CDIR NODEP |
---|
| 1708 | !OCL NOVREC |
---|
| 1709 | DO ijk = 1, lot |
---|
| 1710 | c(ja+j) = a(ia+i) + (a(ib+i)+a(ic+i)) |
---|
[1342] | 1711 | c(jb+j) = ((a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))+qrt5*(a(ib+i)-a(ic+i))) - & |
---|
[1] | 1712 | & (sin72*b(ib+i)+sin36*b(ic+i)) |
---|
[1342] | 1713 | c(jc+j) = ((a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))-qrt5*(a(ib+i)-a(ic+i))) - & |
---|
[1] | 1714 | & (sin36*b(ib+i)-sin72*b(ic+i)) |
---|
[1342] | 1715 | c(jd+j) = ((a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))-qrt5*(a(ib+i)-a(ic+i))) + & |
---|
[1] | 1716 | & (sin36*b(ib+i)-sin72*b(ic+i)) |
---|
[1342] | 1717 | c(je+j) = ((a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))+qrt5*(a(ib+i)-a(ic+i))) + & |
---|
[1] | 1718 | & (sin72*b(ib+i)+sin36*b(ic+i)) |
---|
| 1719 | i = i + inc3 |
---|
| 1720 | j = j + inc4 |
---|
| 1721 | END DO |
---|
| 1722 | ibase = ibase + inc1 |
---|
| 1723 | jbase = jbase + inc2 |
---|
| 1724 | END DO |
---|
| 1725 | ia = ia + iink |
---|
| 1726 | iink = 2*iink |
---|
| 1727 | ib = ib + iink |
---|
| 1728 | ic = ic + iink |
---|
| 1729 | id = id - iink |
---|
| 1730 | ie = ie - iink |
---|
| 1731 | jbase = jbase + jump |
---|
| 1732 | jump = 2*jump + jink |
---|
| 1733 | IF (ib==id) GO TO 110 |
---|
| 1734 | DO k = la, kstop, la |
---|
| 1735 | kb = k + k |
---|
| 1736 | kc = kb + kb |
---|
| 1737 | kd = kc + kb |
---|
| 1738 | ke = kd + kb |
---|
| 1739 | c1 = trigs(kb+1) |
---|
| 1740 | s1 = trigs(kb+2) |
---|
| 1741 | c2 = trigs(kc+1) |
---|
| 1742 | s2 = trigs(kc+2) |
---|
| 1743 | c3 = trigs(kd+1) |
---|
| 1744 | s3 = trigs(kd+2) |
---|
| 1745 | c4 = trigs(ke+1) |
---|
| 1746 | s4 = trigs(ke+2) |
---|
| 1747 | ibase = 0 |
---|
| 1748 | DO l = 1, la |
---|
| 1749 | i = ibase |
---|
| 1750 | j = jbase |
---|
| 1751 | !DIR$ IVDEP |
---|
| 1752 | !CDIR NODEP |
---|
| 1753 | !OCL NOVREC |
---|
| 1754 | DO ijk = 1, lot |
---|
| 1755 | |
---|
[1342] | 1756 | a10(ijk) = (a(ia+i)-0.25_wp*((a(ib+i)+a(ie+i))+(a(ic+i)+a(id+i)))) + & |
---|
[1] | 1757 | & qrt5*((a(ib+i)+a(ie+i))-(a(ic+i)+a(id+i))) |
---|
[1342] | 1758 | a20(ijk) = (a(ia+i)-0.25_wp*((a(ib+i)+a(ie+i))+(a(ic+i)+a(id+i)))) - & |
---|
[1] | 1759 | & qrt5*((a(ib+i)+a(ie+i))-(a(ic+i)+a(id+i))) |
---|
[1342] | 1760 | b10(ijk) = (b(ia+i)-0.25_wp*((b(ib+i)-b(ie+i))+(b(ic+i)-b(id+i)))) + & |
---|
[1] | 1761 | & qrt5*((b(ib+i)-b(ie+i))-(b(ic+i)-b(id+i))) |
---|
[1342] | 1762 | b20(ijk) = (b(ia+i)-0.25_wp*((b(ib+i)-b(ie+i))+(b(ic+i)-b(id+i)))) - & |
---|
[1] | 1763 | & qrt5*((b(ib+i)-b(ie+i))-(b(ic+i)-b(id+i))) |
---|
| 1764 | a11(ijk) = sin72*(b(ib+i)+b(ie+i)) + sin36*(b(ic+i)+b(id+i)) |
---|
| 1765 | a21(ijk) = sin36*(b(ib+i)+b(ie+i)) - sin72*(b(ic+i)+b(id+i)) |
---|
| 1766 | b11(ijk) = sin72*(a(ib+i)-a(ie+i)) + sin36*(a(ic+i)-a(id+i)) |
---|
| 1767 | b21(ijk) = sin36*(a(ib+i)-a(ie+i)) - sin72*(a(ic+i)-a(id+i)) |
---|
| 1768 | |
---|
| 1769 | c(ja+j) = a(ia+i) + ((a(ib+i)+a(ie+i))+(a(ic+i)+a(id+i))) |
---|
| 1770 | d(ja+j) = b(ia+i) + ((b(ib+i)-b(ie+i))+(b(ic+i)-b(id+i))) |
---|
| 1771 | c(jb+j) = c1*(a10(ijk)-a11(ijk)) - s1*(b10(ijk)+b11(ijk)) |
---|
| 1772 | d(jb+j) = s1*(a10(ijk)-a11(ijk)) + c1*(b10(ijk)+b11(ijk)) |
---|
| 1773 | c(je+j) = c4*(a10(ijk)+a11(ijk)) - s4*(b10(ijk)-b11(ijk)) |
---|
| 1774 | d(je+j) = s4*(a10(ijk)+a11(ijk)) + c4*(b10(ijk)-b11(ijk)) |
---|
| 1775 | c(jc+j) = c2*(a20(ijk)-a21(ijk)) - s2*(b20(ijk)+b21(ijk)) |
---|
| 1776 | d(jc+j) = s2*(a20(ijk)-a21(ijk)) + c2*(b20(ijk)+b21(ijk)) |
---|
| 1777 | c(jd+j) = c3*(a20(ijk)+a21(ijk)) - s3*(b20(ijk)-b21(ijk)) |
---|
| 1778 | d(jd+j) = s3*(a20(ijk)+a21(ijk)) + c3*(b20(ijk)-b21(ijk)) |
---|
| 1779 | |
---|
| 1780 | i = i + inc3 |
---|
| 1781 | j = j + inc4 |
---|
| 1782 | END DO |
---|
| 1783 | ibase = ibase + inc1 |
---|
| 1784 | jbase = jbase + inc2 |
---|
| 1785 | END DO |
---|
| 1786 | ia = ia + iink |
---|
| 1787 | ib = ib + iink |
---|
| 1788 | ic = ic + iink |
---|
| 1789 | id = id - iink |
---|
| 1790 | ie = ie - iink |
---|
| 1791 | jbase = jbase + jump |
---|
| 1792 | END DO |
---|
| 1793 | IF (ib>id) GO TO 170 |
---|
| 1794 | 110 CONTINUE |
---|
| 1795 | ibase = 0 |
---|
| 1796 | DO l = 1, la |
---|
| 1797 | i = ibase |
---|
| 1798 | j = jbase |
---|
| 1799 | !DIR$ IVDEP |
---|
| 1800 | !CDIR NODEP |
---|
| 1801 | !OCL NOVREC |
---|
| 1802 | DO ijk = 1, lot |
---|
| 1803 | c(ja+j) = (a(ia+i)+a(ib+i)) + a(ic+i) |
---|
[1342] | 1804 | c(jb+j) = (qrt5*(a(ia+i)-a(ib+i))+(0.25_wp*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
[1] | 1805 | & (sin36*b(ia+i)+sin72*b(ib+i)) |
---|
[1342] | 1806 | c(je+j) = -(qrt5*(a(ia+i)-a(ib+i))+(0.25_wp*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
[1] | 1807 | & (sin36*b(ia+i)+sin72*b(ib+i)) |
---|
[1342] | 1808 | c(jc+j) = (qrt5*(a(ia+i)-a(ib+i))-(0.25_wp*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
[1] | 1809 | & (sin72*b(ia+i)-sin36*b(ib+i)) |
---|
[1342] | 1810 | c(jd+j) = -(qrt5*(a(ia+i)-a(ib+i))-(0.25_wp*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
[1] | 1811 | & (sin72*b(ia+i)-sin36*b(ib+i)) |
---|
| 1812 | i = i + inc3 |
---|
| 1813 | j = j + inc4 |
---|
| 1814 | END DO |
---|
| 1815 | ibase = ibase + inc1 |
---|
| 1816 | jbase = jbase + inc2 |
---|
| 1817 | END DO |
---|
| 1818 | |
---|
| 1819 | GO TO 170 |
---|
| 1820 | 120 CONTINUE |
---|
[1320] | 1821 | qqrt5 = 2.0_wp*qrt5 |
---|
| 1822 | ssin36 = 2.0_wp*sin36 |
---|
| 1823 | ssin72 = 2.0_wp*sin72 |
---|
[1] | 1824 | DO l = 1, la |
---|
| 1825 | i = ibase |
---|
| 1826 | j = jbase |
---|
| 1827 | !DIR$ IVDEP |
---|
| 1828 | !CDIR NODEP |
---|
| 1829 | !OCL NOVREC |
---|
| 1830 | DO ijk = 1, lot |
---|
[1342] | 1831 | c(ja+j) = 2.0_wp*(a(ia+i)+(a(ib+i)+a(ic+i))) |
---|
| 1832 | c(jb+j) = (2.0_wp*(a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))+qqrt5*(a(ib+i)-a(ic+ & |
---|
[1] | 1833 | & i))) - (ssin72*b(ib+i)+ssin36*b(ic+i)) |
---|
[1342] | 1834 | c(jc+j) = (2.0_wp*(a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))-qqrt5*(a(ib+i)-a(ic+ & |
---|
[1] | 1835 | & i))) - (ssin36*b(ib+i)-ssin72*b(ic+i)) |
---|
[1342] | 1836 | c(jd+j) = (2.0_wp*(a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))-qqrt5*(a(ib+i)-a(ic+ & |
---|
[1] | 1837 | & i))) + (ssin36*b(ib+i)-ssin72*b(ic+i)) |
---|
[1342] | 1838 | c(je+j) = (2.0_wp*(a(ia+i)-0.25_wp*(a(ib+i)+a(ic+i)))+qqrt5*(a(ib+i)-a(ic+ & |
---|
[1] | 1839 | & i))) + (ssin72*b(ib+i)+ssin36*b(ic+i)) |
---|
| 1840 | i = i + inc3 |
---|
| 1841 | j = j + inc4 |
---|
| 1842 | END DO |
---|
| 1843 | ibase = ibase + inc1 |
---|
| 1844 | jbase = jbase + inc2 |
---|
| 1845 | END DO |
---|
| 1846 | GO TO 170 |
---|
| 1847 | |
---|
| 1848 | ! Coding for factor 6 |
---|
| 1849 | |
---|
| 1850 | 130 CONTINUE |
---|
| 1851 | ia = 1 |
---|
| 1852 | ib = ia + (2*m-la)*inc1 |
---|
| 1853 | ic = ib + 2*m*inc1 |
---|
| 1854 | id = ic + 2*m*inc1 |
---|
| 1855 | ie = ic |
---|
| 1856 | if = ib |
---|
| 1857 | ja = 1 |
---|
| 1858 | jb = ja + jink |
---|
| 1859 | jc = jb + jink |
---|
| 1860 | jd = jc + jink |
---|
| 1861 | je = jd + jink |
---|
| 1862 | jf = je + jink |
---|
| 1863 | |
---|
| 1864 | IF (la==m) GO TO 150 |
---|
| 1865 | |
---|
| 1866 | DO l = 1, la |
---|
| 1867 | i = ibase |
---|
| 1868 | j = jbase |
---|
| 1869 | !DIR$ IVDEP |
---|
| 1870 | !CDIR NODEP |
---|
| 1871 | !OCL NOVREC |
---|
| 1872 | DO ijk = 1, lot |
---|
| 1873 | c(ja+j) = (a(ia+i)+a(id+i)) + (a(ib+i)+a(ic+i)) |
---|
| 1874 | c(jd+j) = (a(ia+i)-a(id+i)) - (a(ib+i)-a(ic+i)) |
---|
[1342] | 1875 | c(jb+j) = ((a(ia+i)-a(id+i))+0.5_wp*(a(ib+i)-a(ic+i))) - (sin60*(b(ib+ & |
---|
[1] | 1876 | & i)+b(ic+i))) |
---|
[1342] | 1877 | c(jf+j) = ((a(ia+i)-a(id+i))+0.5_wp*(a(ib+i)-a(ic+i))) + (sin60*(b(ib+ & |
---|
[1] | 1878 | & i)+b(ic+i))) |
---|
[1342] | 1879 | c(jc+j) = ((a(ia+i)+a(id+i))-0.5_wp*(a(ib+i)+a(ic+i))) - (sin60*(b(ib+ & |
---|
[1] | 1880 | & i)-b(ic+i))) |
---|
[1342] | 1881 | c(je+j) = ((a(ia+i)+a(id+i))-0.5_wp*(a(ib+i)+a(ic+i))) + (sin60*(b(ib+ & |
---|
[1] | 1882 | & i)-b(ic+i))) |
---|
| 1883 | i = i + inc3 |
---|
| 1884 | j = j + inc4 |
---|
| 1885 | END DO |
---|
| 1886 | ibase = ibase + inc1 |
---|
| 1887 | jbase = jbase + inc2 |
---|
| 1888 | END DO |
---|
| 1889 | ia = ia + iink |
---|
| 1890 | iink = 2*iink |
---|
| 1891 | ib = ib + iink |
---|
| 1892 | ic = ic + iink |
---|
| 1893 | id = id - iink |
---|
| 1894 | ie = ie - iink |
---|
| 1895 | if = if - iink |
---|
| 1896 | jbase = jbase + jump |
---|
| 1897 | jump = 2*jump + jink |
---|
| 1898 | IF (ic==id) GO TO 140 |
---|
| 1899 | DO k = la, kstop, la |
---|
| 1900 | kb = k + k |
---|
| 1901 | kc = kb + kb |
---|
| 1902 | kd = kc + kb |
---|
| 1903 | ke = kd + kb |
---|
| 1904 | kf = ke + kb |
---|
| 1905 | c1 = trigs(kb+1) |
---|
| 1906 | s1 = trigs(kb+2) |
---|
| 1907 | c2 = trigs(kc+1) |
---|
| 1908 | s2 = trigs(kc+2) |
---|
| 1909 | c3 = trigs(kd+1) |
---|
| 1910 | s3 = trigs(kd+2) |
---|
| 1911 | c4 = trigs(ke+1) |
---|
| 1912 | s4 = trigs(ke+2) |
---|
| 1913 | c5 = trigs(kf+1) |
---|
| 1914 | s5 = trigs(kf+2) |
---|
| 1915 | ibase = 0 |
---|
| 1916 | DO l = 1, la |
---|
| 1917 | i = ibase |
---|
| 1918 | j = jbase |
---|
| 1919 | !DIR$ IVDEP |
---|
| 1920 | !CDIR NODEP |
---|
| 1921 | !OCL NOVREC |
---|
| 1922 | DO ijk = 1, lot |
---|
| 1923 | |
---|
| 1924 | a11(ijk) = (a(ie+i)+a(ib+i)) + (a(ic+i)+a(if+i)) |
---|
[1342] | 1925 | a20(ijk) = (a(ia+i)+a(id+i)) - 0.5_wp*a11(ijk) |
---|
[1] | 1926 | a21(ijk) = sin60*((a(ie+i)+a(ib+i))-(a(ic+i)+a(if+i))) |
---|
| 1927 | b11(ijk) = (b(ib+i)-b(ie+i)) + (b(ic+i)-b(if+i)) |
---|
[1342] | 1928 | b20(ijk) = (b(ia+i)-b(id+i)) - 0.5_wp*b11(ijk) |
---|
[1] | 1929 | b21(ijk) = sin60*((b(ib+i)-b(ie+i))-(b(ic+i)-b(if+i))) |
---|
| 1930 | |
---|
| 1931 | c(ja+j) = (a(ia+i)+a(id+i)) + a11(ijk) |
---|
| 1932 | d(ja+j) = (b(ia+i)-b(id+i)) + b11(ijk) |
---|
| 1933 | c(jc+j) = c2*(a20(ijk)-b21(ijk)) - s2*(b20(ijk)+a21(ijk)) |
---|
| 1934 | d(jc+j) = s2*(a20(ijk)-b21(ijk)) + c2*(b20(ijk)+a21(ijk)) |
---|
| 1935 | c(je+j) = c4*(a20(ijk)+b21(ijk)) - s4*(b20(ijk)-a21(ijk)) |
---|
| 1936 | d(je+j) = s4*(a20(ijk)+b21(ijk)) + c4*(b20(ijk)-a21(ijk)) |
---|
| 1937 | |
---|
| 1938 | a11(ijk) = (a(ie+i)-a(ib+i)) + (a(ic+i)-a(if+i)) |
---|
| 1939 | b11(ijk) = (b(ie+i)+b(ib+i)) - (b(ic+i)+b(if+i)) |
---|
[1342] | 1940 | a20(ijk) = (a(ia+i)-a(id+i)) - 0.5_wp*a11(ijk) |
---|
[1] | 1941 | a21(ijk) = sin60*((a(ie+i)-a(ib+i))-(a(ic+i)-a(if+i))) |
---|
[1342] | 1942 | b20(ijk) = (b(ia+i)+b(id+i)) + 0.5_wp*b11(ijk) |
---|
[1] | 1943 | b21(ijk) = sin60*((b(ie+i)+b(ib+i))+(b(ic+i)+b(if+i))) |
---|
| 1944 | |
---|
| 1945 | c(jd+j) = c3*((a(ia+i)-a(id+i))+a11(ijk)) - s3*((b(ia+i)+b(id+ & |
---|
| 1946 | & i))-b11(ijk)) |
---|
| 1947 | d(jd+j) = s3*((a(ia+i)-a(id+i))+a11(ijk)) + c3*((b(ia+i)+b(id+ & |
---|
| 1948 | & i))-b11(ijk)) |
---|
| 1949 | c(jb+j) = c1*(a20(ijk)-b21(ijk)) - s1*(b20(ijk)-a21(ijk)) |
---|
| 1950 | d(jb+j) = s1*(a20(ijk)-b21(ijk)) + c1*(b20(ijk)-a21(ijk)) |
---|
| 1951 | c(jf+j) = c5*(a20(ijk)+b21(ijk)) - s5*(b20(ijk)+a21(ijk)) |
---|
| 1952 | d(jf+j) = s5*(a20(ijk)+b21(ijk)) + c5*(b20(ijk)+a21(ijk)) |
---|
| 1953 | |
---|
| 1954 | i = i + inc3 |
---|
| 1955 | j = j + inc4 |
---|
| 1956 | END DO |
---|
| 1957 | ibase = ibase + inc1 |
---|
| 1958 | jbase = jbase + inc2 |
---|
| 1959 | END DO |
---|
| 1960 | ia = ia + iink |
---|
| 1961 | ib = ib + iink |
---|
| 1962 | ic = ic + iink |
---|
| 1963 | id = id - iink |
---|
| 1964 | ie = ie - iink |
---|
| 1965 | if = if - iink |
---|
| 1966 | jbase = jbase + jump |
---|
| 1967 | END DO |
---|
| 1968 | IF (ic>id) GO TO 170 |
---|
| 1969 | 140 CONTINUE |
---|
| 1970 | ibase = 0 |
---|
| 1971 | DO l = 1, la |
---|
| 1972 | i = ibase |
---|
| 1973 | j = jbase |
---|
| 1974 | !DIR$ IVDEP |
---|
| 1975 | !CDIR NODEP |
---|
| 1976 | !OCL NOVREC |
---|
| 1977 | DO ijk = 1, lot |
---|
| 1978 | c(ja+j) = a(ib+i) + (a(ia+i)+a(ic+i)) |
---|
| 1979 | c(jd+j) = b(ib+i) - (b(ia+i)+b(ic+i)) |
---|
[1342] | 1980 | c(jb+j) = (sin60*(a(ia+i)-a(ic+i))) - (0.5_wp*(b(ia+i)+b(ic+i))+b(ib+i)) |
---|
| 1981 | c(jf+j) = -(sin60*(a(ia+i)-a(ic+i))) - (0.5_wp*(b(ia+i)+b(ic+i))+b(ib+i)) |
---|
| 1982 | c(jc+j) = sin60*(b(ic+i)-b(ia+i)) + (0.5_wp*(a(ia+i)+a(ic+i))-a(ib+i)) |
---|
| 1983 | c(je+j) = sin60*(b(ic+i)-b(ia+i)) - (0.5_wp*(a(ia+i)+a(ic+i))-a(ib+i)) |
---|
[1] | 1984 | i = i + inc3 |
---|
| 1985 | j = j + inc4 |
---|
| 1986 | END DO |
---|
| 1987 | ibase = ibase + inc1 |
---|
| 1988 | jbase = jbase + inc2 |
---|
| 1989 | END DO |
---|
| 1990 | |
---|
| 1991 | GO TO 170 |
---|
| 1992 | 150 CONTINUE |
---|
[1342] | 1993 | ssin60 = 2.0_wp*sin60 |
---|
[1] | 1994 | DO l = 1, la |
---|
| 1995 | i = ibase |
---|
| 1996 | j = jbase |
---|
| 1997 | !DIR$ IVDEP |
---|
| 1998 | !CDIR NODEP |
---|
| 1999 | !OCL NOVREC |
---|
| 2000 | DO ijk = 1, lot |
---|
[1342] | 2001 | c(ja+j) = (2.0_wp*(a(ia+i)+a(id+i))) + (2.0_wp*(a(ib+i)+a(ic+i))) |
---|
| 2002 | c(jd+j) = (2.0_wp*(a(ia+i)-a(id+i))) - (2.0_wp*(a(ib+i)-a(ic+i))) |
---|
| 2003 | c(jb+j) = (2.0_wp*(a(ia+i)-a(id+i))+(a(ib+i)-a(ic+i))) - (ssin60*(b(ib+ & |
---|
[1] | 2004 | & i)+b(ic+i))) |
---|
[1342] | 2005 | c(jf+j) = (2.0_wp*(a(ia+i)-a(id+i))+(a(ib+i)-a(ic+i))) + (ssin60*(b(ib+ & |
---|
[1] | 2006 | & i)+b(ic+i))) |
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[1342] | 2007 | c(jc+j) = (2.0_wp*(a(ia+i)+a(id+i))-(a(ib+i)+a(ic+i))) - (ssin60*(b(ib+ & |
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[1] | 2008 | & i)-b(ic+i))) |
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[1342] | 2009 | c(je+j) = (2.0_wp*(a(ia+i)+a(id+i))-(a(ib+i)+a(ic+i))) + (ssin60*(b(ib+ & |
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[1] | 2010 | & i)-b(ic+i))) |
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| 2011 | i = i + inc3 |
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| 2012 | j = j + inc4 |
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| 2013 | END DO |
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| 2014 | ibase = ibase + inc1 |
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| 2015 | jbase = jbase + inc2 |
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| 2016 | END DO |
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| 2017 | GO TO 170 |
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| 2018 | |
---|
| 2019 | ! Coding for factor 8 |
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| 2020 | |
---|
| 2021 | 160 CONTINUE |
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| 2022 | ibad = 3 |
---|
| 2023 | IF (la/=m) GO TO 180 |
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| 2024 | ia = 1 |
---|
| 2025 | ib = ia + la*inc1 |
---|
| 2026 | ic = ib + 2*la*inc1 |
---|
| 2027 | id = ic + 2*la*inc1 |
---|
| 2028 | ie = id + 2*la*inc1 |
---|
| 2029 | ja = 1 |
---|
| 2030 | jb = ja + jink |
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| 2031 | jc = jb + jink |
---|
| 2032 | jd = jc + jink |
---|
| 2033 | je = jd + jink |
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| 2034 | jf = je + jink |
---|
| 2035 | jg = jf + jink |
---|
| 2036 | jh = jg + jink |
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[1320] | 2037 | ssin45 = SQRT(2.0_wp) |
---|
[1] | 2038 | |
---|
| 2039 | DO l = 1, la |
---|
| 2040 | i = ibase |
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| 2041 | j = jbase |
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| 2042 | !DIR$ IVDEP |
---|
| 2043 | !CDIR NODEP |
---|
| 2044 | !OCL NOVREC |
---|
| 2045 | DO ijk = 1, lot |
---|
[1342] | 2046 | c(ja+j) = 2.0_wp*(((a(ia+i)+a(ie+i))+a(ic+i))+(a(ib+i)+a(id+i))) |
---|
| 2047 | c(je+j) = 2.0_wp*(((a(ia+i)+a(ie+i))+a(ic+i))-(a(ib+i)+a(id+i))) |
---|
| 2048 | c(jc+j) = 2.0_wp*(((a(ia+i)+a(ie+i))-a(ic+i))-(b(ib+i)-b(id+i))) |
---|
| 2049 | c(jg+j) = 2.0_wp*(((a(ia+i)+a(ie+i))-a(ic+i))+(b(ib+i)-b(id+i))) |
---|
| 2050 | c(jb+j) = 2.0_wp*((a(ia+i)-a(ie+i))-b(ic+i)) + ssin45*((a(ib+i)-a(id+ & |
---|
| 2051 | & i))-(b(ib+i)+b(id+i))) |
---|
| 2052 | c(jf+j) = 2.0_wp*((a(ia+i)-a(ie+i))-b(ic+i)) - ssin45*((a(ib+i)-a(id+ & |
---|
| 2053 | & i))-(b(ib+i)+b(id+i))) |
---|
| 2054 | c(jd+j) = 2.0_wp*((a(ia+i)-a(ie+i))+b(ic+i)) - ssin45*((a(ib+i)-a(id+ & |
---|
| 2055 | & i))+(b(ib+i)+b(id+i))) |
---|
| 2056 | c(jh+j) = 2.0_wp*((a(ia+i)-a(ie+i))+b(ic+i)) + ssin45*((a(ib+i)-a(id+ & |
---|
| 2057 | & i))+(b(ib+i)+b(id+i))) |
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[1] | 2058 | i = i + inc3 |
---|
| 2059 | j = j + inc4 |
---|
| 2060 | END DO |
---|
| 2061 | ibase = ibase + inc1 |
---|
| 2062 | jbase = jbase + inc2 |
---|
| 2063 | END DO |
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| 2064 | |
---|
| 2065 | ! Return |
---|
| 2066 | |
---|
| 2067 | 170 CONTINUE |
---|
| 2068 | ibad = 0 |
---|
| 2069 | 180 CONTINUE |
---|
| 2070 | ierr = ibad |
---|
| 2071 | RETURN |
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| 2072 | END SUBROUTINE rpassm |
---|
| 2073 | |
---|
[1682] | 2074 | !------------------------------------------------------------------------------! |
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| 2075 | ! Description: |
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| 2076 | ! ------------ |
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| 2077 | !> Computes factors of n & trigonometric functins required by fft99 & fft991cy |
---|
| 2078 | !> Method: Dimension trigs(n),ifax(1),jfax(10),lfax(7) |
---|
| 2079 | !> subroutine 'set99' - computes factors of n & trigonometric |
---|
| 2080 | !> functins required by fft99 & fft991cy |
---|
| 2081 | !------------------------------------------------------------------------------! |
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[1] | 2082 | SUBROUTINE set99(trigs,ifax,n) |
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| 2083 | |
---|
| 2084 | |
---|
[1320] | 2085 | USE control_parameters, & |
---|
| 2086 | ONLY: message_string |
---|
[1] | 2087 | |
---|
[1320] | 2088 | USE kinds |
---|
| 2089 | |
---|
[1] | 2090 | IMPLICIT NONE |
---|
| 2091 | |
---|
| 2092 | ! Scalar arguments |
---|
[1682] | 2093 | INTEGER(iwp) :: n !< |
---|
[1] | 2094 | |
---|
| 2095 | ! Array arguments |
---|
[1682] | 2096 | INTEGER(iwp) :: ifax(*) !< |
---|
| 2097 | REAL(wp) :: trigs(*) !< |
---|
[1] | 2098 | |
---|
[1320] | 2099 | |
---|
[1] | 2100 | ! Local scalars: |
---|
[1682] | 2101 | REAL(wp) :: angle !< |
---|
| 2102 | REAL(wp) :: del !< |
---|
| 2103 | INTEGER(iwp) :: i !< |
---|
| 2104 | INTEGER(iwp) :: ifac !< |
---|
| 2105 | INTEGER(iwp) :: ixxx !< |
---|
| 2106 | INTEGER(iwp) :: k !< |
---|
| 2107 | INTEGER(iwp) :: l !< |
---|
| 2108 | INTEGER(iwp) :: nfax !< |
---|
| 2109 | INTEGER(iwp) :: nhl !< |
---|
| 2110 | INTEGER(iwp) :: nil !< |
---|
| 2111 | INTEGER(iwp) :: nu !< |
---|
[1] | 2112 | |
---|
| 2113 | ! Local arrays: |
---|
[1682] | 2114 | INTEGER(iwp) :: jfax(10) !< |
---|
| 2115 | INTEGER(iwp) :: lfax(7) !< |
---|
[1] | 2116 | |
---|
| 2117 | ! Intrinsic functions |
---|
[1320] | 2118 | ! INTRINSIC ASIN, COS, MOD, REAL, SIN |
---|
[1] | 2119 | |
---|
| 2120 | ! Data statements |
---|
| 2121 | DATA lfax/6, 8, 5, 4, 3, 2, 1/ |
---|
| 2122 | |
---|
| 2123 | |
---|
| 2124 | ! Executable statements |
---|
| 2125 | ixxx = 1 |
---|
| 2126 | |
---|
[1342] | 2127 | del = 4.0_wp*ASIN(1.0_wp)/REAL(n,KIND=wp) |
---|
[1] | 2128 | nil = 0 |
---|
| 2129 | nhl = (n/2) - 1 |
---|
| 2130 | DO k = nil, nhl |
---|
[1342] | 2131 | angle = REAL(k,KIND=wp)*del |
---|
[1] | 2132 | trigs(2*k+1) = COS(angle) |
---|
| 2133 | trigs(2*k+2) = SIN(angle) |
---|
| 2134 | END DO |
---|
| 2135 | |
---|
| 2136 | ! Find factors of n (8,6,5,4,3,2; only one 8 allowed) |
---|
| 2137 | ! Look for sixes first, store factors in descending order |
---|
| 2138 | nu = n |
---|
| 2139 | ifac = 6 |
---|
| 2140 | k = 0 |
---|
| 2141 | l = 1 |
---|
| 2142 | 10 CONTINUE |
---|
| 2143 | IF (MOD(nu,ifac)/=0) GO TO 30 |
---|
| 2144 | k = k + 1 |
---|
| 2145 | jfax(k) = ifac |
---|
| 2146 | IF (ifac/=8) GO TO 20 |
---|
| 2147 | IF (k==1) GO TO 20 |
---|
| 2148 | jfax(1) = 8 |
---|
| 2149 | jfax(k) = 6 |
---|
| 2150 | 20 CONTINUE |
---|
| 2151 | nu = nu/ifac |
---|
| 2152 | IF (nu==1) GO TO 40 |
---|
| 2153 | IF (ifac/=8) GO TO 10 |
---|
| 2154 | 30 CONTINUE |
---|
| 2155 | l = l + 1 |
---|
| 2156 | ifac = lfax(l) |
---|
| 2157 | IF (ifac>1) GO TO 10 |
---|
| 2158 | |
---|
| 2159 | ! WRITE (nout,'(A,I4,A)') ' n =',n,' - Contains illegal factors' |
---|
[258] | 2160 | message_string = 'number of gridpoints along x or/and y ' // & |
---|
| 2161 | 'contain illegal factors' // & |
---|
| 2162 | '&only factors 8,6,5,4,3,2 are allowed' |
---|
| 2163 | CALL message( 'temperton_fft', 'PA0311', 1, 2, 0, 6, 0 ) |
---|
[1] | 2164 | |
---|
| 2165 | RETURN |
---|
| 2166 | |
---|
| 2167 | ! Now reverse order of factors |
---|
| 2168 | 40 CONTINUE |
---|
| 2169 | nfax = k |
---|
| 2170 | ifax(1) = nfax |
---|
| 2171 | DO i = 1, nfax |
---|
| 2172 | ifax(nfax+2-i) = jfax(i) |
---|
| 2173 | END DO |
---|
| 2174 | ifax(10) = n |
---|
| 2175 | RETURN |
---|
| 2176 | END SUBROUTINE set99 |
---|
| 2177 | |
---|
| 2178 | END MODULE temperton_fft |
---|