[1] | 1 | MODULE temperton_fft |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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[258] | 4 | ! Current revisions: |
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[1] | 5 | ! ----------------- |
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[1321] | 6 | ! |
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| 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| 10 | ! $Id: temperton_fft.f90 1321 2014-03-20 09:40:40Z raasch $ |
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| 11 | ! |
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| 12 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 13 | ! ONLY-attribute added to USE-statements, |
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| 14 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 15 | ! kinds are defined in new module kinds, |
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| 16 | ! old module precision_kind is removed, |
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| 17 | ! revision history before 2012 removed, |
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| 18 | ! comment fields (!:) to be used for variable explanations added to |
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| 19 | ! all variable declaration statements |
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[1] | 20 | ! |
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| 21 | ! Revision 1.1 2003/03/12 16:41:59 raasch |
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| 22 | ! Initial revision |
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| 23 | ! |
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| 24 | ! |
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| 25 | ! Description: |
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| 26 | ! ------------ |
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| 27 | ! Fast Fourier transformation developed by Clive Temperton, ECMWF. |
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| 28 | !------------------------------------------------------------------------------! |
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| 29 | |
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[1320] | 30 | USE kinds |
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| 31 | |
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[1] | 32 | IMPLICIT NONE |
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| 33 | |
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| 34 | PRIVATE |
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| 35 | |
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| 36 | PUBLIC set99, fft991cy |
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| 37 | |
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| 38 | |
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[1320] | 39 | INTEGER(iwp) :: nfax(10) !: array used by *fft991*. |
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| 40 | REAL(wp), ALLOCATABLE :: trig(:) !: array used by *fft991*. |
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[1] | 41 | |
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| 42 | ! |
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| 43 | !-- nfft: maximum length of calls to *fft. |
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| 44 | #if defined( __nec ) |
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[1320] | 45 | INTEGER(iwp), PARAMETER :: nfft = 256 !: |
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[1] | 46 | #else |
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[1320] | 47 | INTEGER(iwp), PARAMETER :: nfft = 32 !: |
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[1] | 48 | #endif |
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| 49 | |
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[1320] | 50 | INTEGER(iwp), PARAMETER :: nout = 6 !: standard output stream |
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[1] | 51 | |
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| 52 | CONTAINS |
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| 53 | |
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| 54 | SUBROUTINE fft991cy(a,work,trigs,ifax,inc,jump,n,lot,isign) |
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| 55 | |
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| 56 | ! Description: |
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| 57 | ! |
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| 58 | ! Calls fortran-versions of fft's. |
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| 59 | ! |
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| 60 | ! Method: |
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| 61 | ! |
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| 62 | ! Subroutine 'fft991cy' - multiple fast real periodic transform |
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| 63 | ! supersedes previous routine 'fft991cy'. |
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| 64 | ! |
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| 65 | ! Real transform of length n performed by removing redundant |
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| 66 | ! operations from complex transform of length n. |
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| 67 | ! |
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| 68 | ! a is the array containing input & output data. |
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| 69 | ! work is an area of size (n+1)*min(lot,nfft). |
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| 70 | ! trigs is a previously prepared list of trig function values. |
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| 71 | ! ifax is a previously prepared list of factors of n. |
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| 72 | ! inc is the increment within each data 'vector' |
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| 73 | ! (e.g. inc=1 for consecutively stored data). |
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| 74 | ! jump is the increment between the start of each data vector. |
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| 75 | ! n is the length of the data vectors. |
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| 76 | ! lot is the number of data vectors. |
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| 77 | ! isign = +1 for transform from spectral to gridpoint |
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| 78 | ! = -1 for transform from gridpoint to spectral. |
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| 79 | ! |
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| 80 | ! ordering of coefficients: |
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| 81 | ! a(0),b(0),a(1),b(1),a(2),b(2),.,a(n/2),b(n/2) |
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| 82 | ! where b(0)=b(n/2)=0; (n+2) locations required. |
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| 83 | ! |
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| 84 | ! ordering of data: |
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| 85 | ! x(0),x(1),x(2),.,x(n-1), 0 , 0 ; (n+2) locations required. |
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| 86 | ! |
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| 87 | ! Vectorization is achieved on cray by doing the transforms |
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| 88 | ! in parallel. |
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| 89 | ! |
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| 90 | ! n must be composed of factors 2,3 & 5 but does not have to be even. |
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| 91 | ! |
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| 92 | ! definition of transforms: |
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| 93 | ! |
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| 94 | ! isign=+1: x(j)=sum(k=0,.,n-1)(c(k)*exp(2*i*j*k*pi/n)) |
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| 95 | ! where c(k)=a(k)+i*b(k) and c(n-k)=a(k)-i*b(k) |
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| 96 | |
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| 97 | ! isign=-1: a(k)=(1/n)*sum(j=0,.,n-1)(x(j)*cos(2*j*k*pi/n)) |
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| 98 | ! b(k)=-(1/n)*sum(j=0,.,n-1)(x(j)*sin(2*j*k*pi/n)) |
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| 99 | |
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| 100 | ! calls fortran-versions of fft's !!! |
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| 101 | ! dimension a(n),work(n),trigs(n),ifax(1) |
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| 102 | |
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[1320] | 103 | USE kinds |
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[1] | 104 | |
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| 105 | IMPLICIT NONE |
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| 106 | |
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| 107 | ! Scalar arguments |
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[1320] | 108 | INTEGER(iwp) :: inc !: |
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| 109 | INTEGER(iwp) :: isign !: |
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| 110 | INTEGER(iwp) :: jump !: |
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| 111 | INTEGER(iwp) :: lot !: |
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| 112 | INTEGER(iwp) :: n !: |
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[1] | 113 | |
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| 114 | ! Array arguments |
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[1320] | 115 | REAL(wp) :: a(*) !: |
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| 116 | REAL(wp) :: trigs(*) !: |
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| 117 | REAL(wp) :: work(*) !: |
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| 118 | INTEGER(iwp) :: ifax(*) !: |
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[1] | 119 | |
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| 120 | ! Local scalars: |
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[1320] | 121 | INTEGER(iwp) :: i !: |
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| 122 | INTEGER(iwp) :: ia !: |
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| 123 | INTEGER(iwp) :: ibase !: |
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| 124 | INTEGER(iwp) :: ierr !: |
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| 125 | INTEGER(iwp) :: ifac !: |
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| 126 | INTEGER(iwp) :: igo !: |
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| 127 | INTEGER(iwp) :: ii !: |
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| 128 | INTEGER(iwp) :: istart !: |
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| 129 | INTEGER(iwp) :: ix !: |
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| 130 | INTEGER(iwp) :: iz !: |
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| 131 | INTEGER(iwp) :: j !: |
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| 132 | INTEGER(iwp) :: jbase !: |
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| 133 | INTEGER(iwp) :: jj !: |
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| 134 | INTEGER(iwp) :: k !: |
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| 135 | INTEGER(iwp) :: la !: |
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| 136 | INTEGER(iwp) :: nb !: |
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| 137 | INTEGER(iwp) :: nblox !: |
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| 138 | INTEGER(iwp) :: nfax !: |
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| 139 | INTEGER(iwp) :: nvex !: |
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| 140 | INTEGER(iwp) :: nx !: |
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[1] | 141 | |
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| 142 | ! Intrinsic functions |
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[1320] | 143 | ! INTRINSIC MOD |
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[1] | 144 | |
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| 145 | |
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| 146 | ! Executable statements |
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| 147 | |
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| 148 | IF (ifax(10)/=n) CALL set99(trigs,ifax,n) |
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| 149 | nfax = ifax(1) |
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| 150 | nx = n + 1 |
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| 151 | IF (MOD(n,2)==1) nx = n |
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| 152 | nblox = 1 + (lot-1)/nfft |
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| 153 | nvex = lot - (nblox-1)*nfft |
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| 154 | IF (isign==-1) GO TO 50 |
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| 155 | |
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| 156 | ! isign=+1, spectral to gridpoint transform |
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| 157 | |
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| 158 | istart = 1 |
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| 159 | DO nb = 1, nblox |
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| 160 | ia = istart |
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| 161 | i = istart |
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| 162 | !DIR$ IVDEP |
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| 163 | !CDIR NODEP |
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| 164 | !OCL NOVREC |
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| 165 | DO j = 1, nvex |
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| 166 | a(i+inc) = 0.5*a(i) |
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| 167 | i = i + jump |
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| 168 | END DO |
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| 169 | IF (MOD(n,2)==1) GO TO 10 |
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| 170 | i = istart + n*inc |
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| 171 | DO j = 1, nvex |
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| 172 | a(i) = 0.5*a(i) |
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| 173 | i = i + jump |
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| 174 | END DO |
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| 175 | 10 CONTINUE |
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| 176 | ia = istart + inc |
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| 177 | la = 1 |
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| 178 | igo = + 1 |
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| 179 | |
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| 180 | DO k = 1, nfax |
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| 181 | ifac = ifax(k+1) |
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| 182 | ierr = -1 |
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| 183 | IF (igo==-1) GO TO 20 |
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| 184 | CALL rpassm(a(ia),a(ia+la*inc),work(1),work(ifac*la+1),trigs,inc,1, & |
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| 185 | & jump,nx,nvex,n,ifac,la,ierr) |
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| 186 | GO TO 30 |
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| 187 | 20 CONTINUE |
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| 188 | CALL rpassm(work(1),work(la+1),a(ia),a(ia+ifac*la*inc),trigs,1,inc,nx, & |
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| 189 | & jump,nvex,n,ifac,la,ierr) |
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| 190 | 30 CONTINUE |
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| 191 | IF (ierr/=0) GO TO 100 |
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| 192 | la = ifac*la |
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| 193 | igo = -igo |
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| 194 | ia = istart |
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| 195 | END DO |
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| 196 | |
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| 197 | ! If necessary, copy results back to a |
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| 198 | |
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| 199 | IF (MOD(nfax,2)==0) GO TO 40 |
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| 200 | ibase = 1 |
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| 201 | jbase = ia |
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| 202 | DO jj = 1, nvex |
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| 203 | i = ibase |
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| 204 | j = jbase |
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| 205 | DO ii = 1, n |
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| 206 | a(j) = work(i) |
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| 207 | i = i + 1 |
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| 208 | j = j + inc |
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| 209 | END DO |
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| 210 | ibase = ibase + nx |
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| 211 | jbase = jbase + jump |
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| 212 | END DO |
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| 213 | 40 CONTINUE |
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| 214 | |
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| 215 | ! Fill in zeros at end |
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| 216 | |
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| 217 | ix = istart + n*inc |
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| 218 | !DIR$ IVDEP |
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| 219 | !CDIR NODEP |
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| 220 | !OCL NOVREC |
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| 221 | DO j = 1, nvex |
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| 222 | a(ix) = 0.0 |
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| 223 | a(ix+inc) = 0.0 |
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| 224 | ix = ix + jump |
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| 225 | END DO |
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| 226 | |
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| 227 | istart = istart + nvex*jump |
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| 228 | nvex = nfft |
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| 229 | END DO |
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| 230 | RETURN |
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| 231 | |
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| 232 | ! isign=-1, gridpoint to spectral transform |
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| 233 | |
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| 234 | 50 CONTINUE |
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| 235 | istart = 1 |
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| 236 | DO nb = 1, nblox |
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| 237 | ia = istart |
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| 238 | la = n |
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| 239 | igo = + 1 |
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| 240 | |
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| 241 | DO k = 1, nfax |
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| 242 | ifac = ifax(nfax+2-k) |
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| 243 | la = la/ifac |
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| 244 | ierr = -1 |
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| 245 | IF (igo==-1) GO TO 60 |
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| 246 | CALL qpassm(a(ia),a(ia+ifac*la*inc),work(1),work(la+1),trigs,inc,1, & |
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| 247 | & jump,nx,nvex,n,ifac,la,ierr) |
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| 248 | GO TO 70 |
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| 249 | 60 CONTINUE |
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| 250 | CALL qpassm(work(1),work(ifac*la+1),a(ia),a(ia+la*inc),trigs,1,inc,nx, & |
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| 251 | & jump,nvex,n,ifac,la,ierr) |
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| 252 | 70 CONTINUE |
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| 253 | IF (ierr/=0) GO TO 100 |
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| 254 | igo = -igo |
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| 255 | ia = istart + inc |
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| 256 | END DO |
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| 257 | |
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| 258 | ! If necessary, copy results back to a |
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| 259 | |
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| 260 | IF (MOD(nfax,2)==0) GO TO 80 |
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| 261 | ibase = 1 |
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| 262 | jbase = ia |
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| 263 | DO jj = 1, nvex |
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| 264 | i = ibase |
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| 265 | j = jbase |
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| 266 | DO ii = 1, n |
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| 267 | a(j) = work(i) |
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| 268 | i = i + 1 |
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| 269 | j = j + inc |
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| 270 | END DO |
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| 271 | ibase = ibase + nx |
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| 272 | jbase = jbase + jump |
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| 273 | END DO |
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| 274 | 80 CONTINUE |
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| 275 | |
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| 276 | ! Shift a(0) & fill in zero imag parts |
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| 277 | |
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| 278 | ix = istart |
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| 279 | !DIR$ IVDEP |
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| 280 | !CDIR NODEP |
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| 281 | !OCL NOVREC |
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| 282 | DO j = 1, nvex |
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| 283 | a(ix) = a(ix+inc) |
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| 284 | a(ix+inc) = 0.0 |
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| 285 | ix = ix + jump |
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| 286 | END DO |
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| 287 | IF (MOD(n,2)==1) GO TO 90 |
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| 288 | iz = istart + (n+1)*inc |
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| 289 | DO j = 1, nvex |
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| 290 | a(iz) = 0.0 |
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| 291 | iz = iz + jump |
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| 292 | END DO |
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| 293 | 90 CONTINUE |
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| 294 | |
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| 295 | istart = istart + nvex*jump |
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| 296 | nvex = nfft |
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| 297 | END DO |
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| 298 | RETURN |
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| 299 | |
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| 300 | ! Error messages |
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| 301 | |
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| 302 | 100 CONTINUE |
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| 303 | |
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| 304 | SELECT CASE (ierr) |
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| 305 | CASE (:-1) |
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| 306 | WRITE (nout,'(A,I5,A)') ' Vector length =',nvex,', greater than nfft' |
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| 307 | CASE (0) |
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| 308 | WRITE (nout,'(A,I3,A)') ' Factor =',ifac,', not catered for' |
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| 309 | CASE (1:) |
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| 310 | WRITE (nout,'(A,I3,A)') ' Factor =',ifac,', only catered for if la*ifac=n' |
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| 311 | END SELECT |
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| 312 | |
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| 313 | RETURN |
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| 314 | END SUBROUTINE fft991cy |
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| 315 | |
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| 316 | SUBROUTINE qpassm(a,b,c,d,trigs,inc1,inc2,inc3,inc4,lot,n,ifac,la,ierr) |
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| 317 | |
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| 318 | ! Description: |
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| 319 | ! |
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| 320 | ! Performs one pass through data as part of |
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| 321 | ! multiple real fft (fourier analysis) routine. |
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| 322 | ! |
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| 323 | ! Method: |
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| 324 | ! |
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| 325 | ! a is first real input vector |
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| 326 | ! equivalence b(1) with a(ifac*la*inc1+1) |
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| 327 | ! c is first real output vector |
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| 328 | ! equivalence d(1) with c(la*inc2+1) |
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| 329 | ! trigs is a precalculated list of sines & cosines |
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| 330 | ! inc1 is the addressing increment for a |
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| 331 | ! inc2 is the addressing increment for c |
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| 332 | ! inc3 is the increment between input vectors a |
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| 333 | ! inc4 is the increment between output vectors c |
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| 334 | ! lot is the number of vectors |
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| 335 | ! n is the length of the vectors |
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| 336 | ! ifac is the current factor of n |
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| 337 | ! la = n/(product of factors used so far) |
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| 338 | ! ierr is an error indicator: |
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| 339 | ! 0 - pass completed without error |
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| 340 | ! 1 - lot greater than nfft |
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| 341 | ! 2 - ifac not catered for |
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| 342 | ! 3 - ifac only catered for if la=n/ifac |
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| 343 | ! |
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| 344 | |
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[1320] | 345 | USE kinds |
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[1] | 346 | |
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[1320] | 347 | IMPLICIT NONE |
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| 348 | |
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[1] | 349 | ! Scalar arguments |
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[1320] | 350 | INTEGER(iwp) :: ierr !: |
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| 351 | INTEGER(iwp) :: ifac !: |
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| 352 | INTEGER(iwp) :: inc1 !: |
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| 353 | INTEGER(iwp) :: inc2 !: |
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| 354 | INTEGER(iwp) :: inc3 !: |
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| 355 | INTEGER(iwp) :: inc4 !: |
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| 356 | INTEGER(iwp) :: la !: |
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| 357 | INTEGER(iwp) :: lot !: |
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| 358 | INTEGER(iwp) :: n !: |
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[1] | 359 | |
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| 360 | ! Array arguments |
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| 361 | ! REAL :: a(n),b(n),c(n),d(n),trigs(n) |
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[1320] | 362 | REAL(wp) :: a(*) !: |
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| 363 | REAL(wp) :: b(*) !: |
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| 364 | REAL(wp) :: c(*) !: |
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| 365 | REAL(wp) :: d(*) !: |
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| 366 | REAL(wp) :: trigs(*) !: |
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| 367 | |
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[1] | 368 | ! Local scalars: |
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[1320] | 369 | REAL(wp) :: a0 !: |
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| 370 | REAL(wp) :: a1 !: |
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| 371 | REAL(wp) :: a10 !: |
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| 372 | REAL(wp) :: a11 !: |
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| 373 | REAL(wp) :: a2 !: |
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| 374 | REAL(wp) :: a20 !: |
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| 375 | REAL(wp) :: a21 !: |
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| 376 | REAL(wp) :: a3 !: |
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| 377 | REAL(wp) :: a4 !: |
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| 378 | REAL(wp) :: a5 !: |
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| 379 | REAL(wp) :: a6 !: |
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| 380 | REAL(wp) :: b0 !: |
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| 381 | REAL(wp) :: b1 !: |
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| 382 | REAL(wp) :: b10 !: |
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| 383 | REAL(wp) :: b11 !: |
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| 384 | REAL(wp) :: b2 !: |
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| 385 | REAL(wp) :: b20 !: |
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| 386 | REAL(wp) :: b21 !: |
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| 387 | REAL(wp) :: b3 !: |
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| 388 | REAL(wp) :: b4 !: |
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| 389 | REAL(wp) :: b5 !: |
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| 390 | REAL(wp) :: b6 !: |
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| 391 | REAL(wp) :: c1 !: |
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| 392 | REAL(wp) :: c2 !: |
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| 393 | REAL(wp) :: c3 !: |
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| 394 | REAL(wp) :: c4 !: |
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| 395 | REAL(wp) :: c5 !: |
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| 396 | REAL(wp) :: qrt5 !: |
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| 397 | REAL(wp) :: s1 !: |
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| 398 | REAL(wp) :: s2 !: |
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| 399 | REAL(wp) :: s3 !: |
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| 400 | REAL(wp) :: s4 !: |
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| 401 | REAL(wp) :: s5 !: |
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| 402 | REAL(wp) :: sin36 !: |
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| 403 | REAL(wp) :: sin45 !: |
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| 404 | REAL(wp) :: sin60 !: |
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| 405 | REAL(wp) :: sin72 !: |
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| 406 | REAL(wp) :: z !: |
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| 407 | REAL(wp) :: zqrt5 !: |
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| 408 | REAL(wp) :: zsin36 !: |
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| 409 | REAL(wp) :: zsin45 !: |
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| 410 | REAL(wp) :: zsin60 !: |
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| 411 | REAL(wp) :: zsin72 !: |
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[1] | 412 | |
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[1320] | 413 | INTEGER(iwp) :: i !: |
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| 414 | INTEGER(iwp) :: ia !: |
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| 415 | INTEGER(iwp) :: ib !: |
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| 416 | INTEGER(iwp) :: ibad !: |
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| 417 | INTEGER(iwp) :: ibase !: |
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| 418 | INTEGER(iwp) :: ic !: |
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| 419 | INTEGER(iwp) :: id !: |
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| 420 | INTEGER(iwp) :: ie !: |
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| 421 | INTEGER(iwp) :: if !: |
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| 422 | INTEGER(iwp) :: ig !: |
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| 423 | INTEGER(iwp) :: igo !: |
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| 424 | INTEGER(iwp) :: ih !: |
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| 425 | INTEGER(iwp) :: iink !: |
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| 426 | INTEGER(iwp) :: ijk !: |
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| 427 | INTEGER(iwp) :: ijump !: |
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| 428 | INTEGER(iwp) :: j !: |
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| 429 | INTEGER(iwp) :: ja !: |
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| 430 | INTEGER(iwp) :: jb !: |
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| 431 | INTEGER(iwp) :: jbase !: |
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| 432 | INTEGER(iwp) :: jc !: |
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| 433 | INTEGER(iwp) :: jd !: |
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| 434 | INTEGER(iwp) :: je !: |
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| 435 | INTEGER(iwp) :: jf !: |
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| 436 | INTEGER(iwp) :: jink !: |
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| 437 | INTEGER(iwp) :: k !: |
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| 438 | INTEGER(iwp) :: kb !: |
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| 439 | INTEGER(iwp) :: kc !: |
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| 440 | INTEGER(iwp) :: kd !: |
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| 441 | INTEGER(iwp) :: ke !: |
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| 442 | INTEGER(iwp) :: kf !: |
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| 443 | INTEGER(iwp) :: kstop !: |
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| 444 | INTEGER(iwp) :: l !: |
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| 445 | INTEGER(iwp) :: m !: |
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| 446 | |
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[1] | 447 | ! Intrinsic functions |
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[1320] | 448 | ! INTRINSIC REAL, SQRT |
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[1] | 449 | |
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| 450 | ! Data statements |
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[1320] | 451 | DATA sin36/0.587785252292473_wp/, sin72/0.951056516295154_wp/, & |
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| 452 | & qrt5/0.559016994374947_wp/, sin60/0.866025403784437_wp/ |
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[1] | 453 | |
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| 454 | |
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| 455 | ! Executable statements |
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| 456 | |
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| 457 | m = n/ifac |
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| 458 | iink = la*inc1 |
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| 459 | jink = la*inc2 |
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| 460 | ijump = (ifac-1)*iink |
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| 461 | kstop = (n-ifac)/(2*ifac) |
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| 462 | |
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| 463 | ibad = 1 |
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| 464 | IF (lot>nfft) GO TO 180 |
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| 465 | ibase = 0 |
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| 466 | jbase = 0 |
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| 467 | igo = ifac - 1 |
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| 468 | IF (igo==7) igo = 6 |
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| 469 | ibad = 2 |
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| 470 | IF (igo<1 .OR. igo>6) GO TO 180 |
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| 471 | GO TO (10,40,70,100,130,160) igo |
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| 472 | |
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| 473 | ! Coding for factor 2 |
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| 474 | |
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| 475 | 10 CONTINUE |
---|
| 476 | ia = 1 |
---|
| 477 | ib = ia + iink |
---|
| 478 | ja = 1 |
---|
| 479 | jb = ja + (2*m-la)*inc2 |
---|
| 480 | |
---|
| 481 | IF (la==m) GO TO 30 |
---|
| 482 | |
---|
| 483 | DO l = 1, la |
---|
| 484 | i = ibase |
---|
| 485 | j = jbase |
---|
| 486 | !DIR$ IVDEP |
---|
| 487 | !CDIR NODEP |
---|
| 488 | !OCL NOVREC |
---|
| 489 | DO ijk = 1, lot |
---|
| 490 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 491 | c(jb+j) = a(ia+i) - a(ib+i) |
---|
| 492 | i = i + inc3 |
---|
| 493 | j = j + inc4 |
---|
| 494 | END DO |
---|
| 495 | ibase = ibase + inc1 |
---|
| 496 | jbase = jbase + inc2 |
---|
| 497 | END DO |
---|
| 498 | ja = ja + jink |
---|
| 499 | jink = 2*jink |
---|
| 500 | jb = jb - jink |
---|
| 501 | ibase = ibase + ijump |
---|
| 502 | ijump = 2*ijump + iink |
---|
| 503 | IF (ja==jb) GO TO 20 |
---|
| 504 | DO k = la, kstop, la |
---|
| 505 | kb = k + k |
---|
| 506 | c1 = trigs(kb+1) |
---|
| 507 | s1 = trigs(kb+2) |
---|
| 508 | jbase = 0 |
---|
| 509 | DO l = 1, la |
---|
| 510 | i = ibase |
---|
| 511 | j = jbase |
---|
| 512 | !DIR$ IVDEP |
---|
| 513 | !CDIR NODEP |
---|
| 514 | !OCL NOVREC |
---|
| 515 | DO ijk = 1, lot |
---|
| 516 | c(ja+j) = a(ia+i) + (c1*a(ib+i)+s1*b(ib+i)) |
---|
| 517 | c(jb+j) = a(ia+i) - (c1*a(ib+i)+s1*b(ib+i)) |
---|
| 518 | d(ja+j) = (c1*b(ib+i)-s1*a(ib+i)) + b(ia+i) |
---|
| 519 | d(jb+j) = (c1*b(ib+i)-s1*a(ib+i)) - b(ia+i) |
---|
| 520 | i = i + inc3 |
---|
| 521 | j = j + inc4 |
---|
| 522 | END DO |
---|
| 523 | ibase = ibase + inc1 |
---|
| 524 | jbase = jbase + inc2 |
---|
| 525 | END DO |
---|
| 526 | ibase = ibase + ijump |
---|
| 527 | ja = ja + jink |
---|
| 528 | jb = jb - jink |
---|
| 529 | END DO |
---|
| 530 | IF (ja>jb) GO TO 170 |
---|
| 531 | 20 CONTINUE |
---|
| 532 | jbase = 0 |
---|
| 533 | DO l = 1, la |
---|
| 534 | i = ibase |
---|
| 535 | j = jbase |
---|
| 536 | !DIR$ IVDEP |
---|
| 537 | !CDIR NODEP |
---|
| 538 | !OCL NOVREC |
---|
| 539 | DO ijk = 1, lot |
---|
| 540 | c(ja+j) = a(ia+i) |
---|
| 541 | d(ja+j) = -a(ib+i) |
---|
| 542 | i = i + inc3 |
---|
| 543 | j = j + inc4 |
---|
| 544 | END DO |
---|
| 545 | ibase = ibase + inc1 |
---|
| 546 | jbase = jbase + inc2 |
---|
| 547 | END DO |
---|
| 548 | |
---|
| 549 | GO TO 170 |
---|
| 550 | 30 CONTINUE |
---|
[1320] | 551 | z = 1.0_wp/REAL(n) |
---|
[1] | 552 | DO l = 1, la |
---|
| 553 | i = ibase |
---|
| 554 | j = jbase |
---|
| 555 | !DIR$ IVDEP |
---|
| 556 | !CDIR NODEP |
---|
| 557 | !OCL NOVREC |
---|
| 558 | DO ijk = 1, lot |
---|
| 559 | c(ja+j) = z*(a(ia+i)+a(ib+i)) |
---|
| 560 | c(jb+j) = z*(a(ia+i)-a(ib+i)) |
---|
| 561 | i = i + inc3 |
---|
| 562 | j = j + inc4 |
---|
| 563 | END DO |
---|
| 564 | ibase = ibase + inc1 |
---|
| 565 | jbase = jbase + inc2 |
---|
| 566 | END DO |
---|
| 567 | GO TO 170 |
---|
| 568 | |
---|
| 569 | ! Coding for factor 3 |
---|
| 570 | |
---|
| 571 | 40 CONTINUE |
---|
| 572 | ia = 1 |
---|
| 573 | ib = ia + iink |
---|
| 574 | ic = ib + iink |
---|
| 575 | ja = 1 |
---|
| 576 | jb = ja + (2*m-la)*inc2 |
---|
| 577 | jc = jb |
---|
| 578 | |
---|
| 579 | IF (la==m) GO TO 60 |
---|
| 580 | |
---|
| 581 | DO l = 1, la |
---|
| 582 | i = ibase |
---|
| 583 | j = jbase |
---|
| 584 | !DIR$ IVDEP |
---|
| 585 | !CDIR NODEP |
---|
| 586 | !OCL NOVREC |
---|
| 587 | DO ijk = 1, lot |
---|
| 588 | c(ja+j) = a(ia+i) + (a(ib+i)+a(ic+i)) |
---|
| 589 | c(jb+j) = a(ia+i) - 0.5*(a(ib+i)+a(ic+i)) |
---|
| 590 | d(jb+j) = sin60*(a(ic+i)-a(ib+i)) |
---|
| 591 | i = i + inc3 |
---|
| 592 | j = j + inc4 |
---|
| 593 | END DO |
---|
| 594 | ibase = ibase + inc1 |
---|
| 595 | jbase = jbase + inc2 |
---|
| 596 | END DO |
---|
| 597 | ja = ja + jink |
---|
| 598 | jink = 2*jink |
---|
| 599 | jb = jb + jink |
---|
| 600 | jc = jc - jink |
---|
| 601 | ibase = ibase + ijump |
---|
| 602 | ijump = 2*ijump + iink |
---|
| 603 | IF (ja==jc) GO TO 50 |
---|
| 604 | DO k = la, kstop, la |
---|
| 605 | kb = k + k |
---|
| 606 | kc = kb + kb |
---|
| 607 | c1 = trigs(kb+1) |
---|
| 608 | s1 = trigs(kb+2) |
---|
| 609 | c2 = trigs(kc+1) |
---|
| 610 | s2 = trigs(kc+2) |
---|
| 611 | jbase = 0 |
---|
| 612 | DO l = 1, la |
---|
| 613 | i = ibase |
---|
| 614 | j = jbase |
---|
| 615 | !DIR$ IVDEP |
---|
| 616 | !CDIR NODEP |
---|
| 617 | !OCL NOVREC |
---|
| 618 | DO ijk = 1, lot |
---|
| 619 | a1 = (c1*a(ib+i)+s1*b(ib+i)) + (c2*a(ic+i)+s2*b(ic+i)) |
---|
| 620 | b1 = (c1*b(ib+i)-s1*a(ib+i)) + (c2*b(ic+i)-s2*a(ic+i)) |
---|
| 621 | a2 = a(ia+i) - 0.5*a1 |
---|
| 622 | b2 = b(ia+i) - 0.5*b1 |
---|
| 623 | a3 = sin60*((c1*a(ib+i)+s1*b(ib+i))-(c2*a(ic+i)+s2*b(ic+i))) |
---|
| 624 | b3 = sin60*((c1*b(ib+i)-s1*a(ib+i))-(c2*b(ic+i)-s2*a(ic+i))) |
---|
| 625 | c(ja+j) = a(ia+i) + a1 |
---|
| 626 | d(ja+j) = b(ia+i) + b1 |
---|
| 627 | c(jb+j) = a2 + b3 |
---|
| 628 | d(jb+j) = b2 - a3 |
---|
| 629 | c(jc+j) = a2 - b3 |
---|
| 630 | d(jc+j) = -(b2+a3) |
---|
| 631 | i = i + inc3 |
---|
| 632 | j = j + inc4 |
---|
| 633 | END DO |
---|
| 634 | ibase = ibase + inc1 |
---|
| 635 | jbase = jbase + inc2 |
---|
| 636 | END DO |
---|
| 637 | ibase = ibase + ijump |
---|
| 638 | ja = ja + jink |
---|
| 639 | jb = jb + jink |
---|
| 640 | jc = jc - jink |
---|
| 641 | END DO |
---|
| 642 | IF (ja>jc) GO TO 170 |
---|
| 643 | 50 CONTINUE |
---|
| 644 | jbase = 0 |
---|
| 645 | DO l = 1, la |
---|
| 646 | i = ibase |
---|
| 647 | j = jbase |
---|
| 648 | !DIR$ IVDEP |
---|
| 649 | !CDIR NODEP |
---|
| 650 | !OCL NOVREC |
---|
| 651 | DO ijk = 1, lot |
---|
| 652 | c(ja+j) = a(ia+i) + 0.5*(a(ib+i)-a(ic+i)) |
---|
| 653 | d(ja+j) = -sin60*(a(ib+i)+a(ic+i)) |
---|
| 654 | c(jb+j) = a(ia+i) - (a(ib+i)-a(ic+i)) |
---|
| 655 | i = i + inc3 |
---|
| 656 | j = j + inc4 |
---|
| 657 | END DO |
---|
| 658 | ibase = ibase + inc1 |
---|
| 659 | jbase = jbase + inc2 |
---|
| 660 | END DO |
---|
| 661 | |
---|
| 662 | GO TO 170 |
---|
| 663 | 60 CONTINUE |
---|
[1320] | 664 | z = 1.0_wp/REAL(n) |
---|
[1] | 665 | zsin60 = z*sin60 |
---|
| 666 | DO l = 1, la |
---|
| 667 | i = ibase |
---|
| 668 | j = jbase |
---|
| 669 | !DIR$ IVDEP |
---|
| 670 | !CDIR NODEP |
---|
| 671 | !OCL NOVREC |
---|
| 672 | DO ijk = 1, lot |
---|
| 673 | c(ja+j) = z*(a(ia+i)+(a(ib+i)+a(ic+i))) |
---|
| 674 | c(jb+j) = z*(a(ia+i)-0.5*(a(ib+i)+a(ic+i))) |
---|
| 675 | d(jb+j) = zsin60*(a(ic+i)-a(ib+i)) |
---|
| 676 | i = i + inc3 |
---|
| 677 | j = j + inc4 |
---|
| 678 | END DO |
---|
| 679 | ibase = ibase + inc1 |
---|
| 680 | jbase = jbase + inc2 |
---|
| 681 | END DO |
---|
| 682 | GO TO 170 |
---|
| 683 | |
---|
| 684 | ! Coding for factor 4 |
---|
| 685 | |
---|
| 686 | 70 CONTINUE |
---|
| 687 | ia = 1 |
---|
| 688 | ib = ia + iink |
---|
| 689 | ic = ib + iink |
---|
| 690 | id = ic + iink |
---|
| 691 | ja = 1 |
---|
| 692 | jb = ja + (2*m-la)*inc2 |
---|
| 693 | jc = jb + 2*m*inc2 |
---|
| 694 | jd = jb |
---|
| 695 | |
---|
| 696 | IF (la==m) GO TO 90 |
---|
| 697 | |
---|
| 698 | DO l = 1, la |
---|
| 699 | i = ibase |
---|
| 700 | j = jbase |
---|
| 701 | !DIR$ IVDEP |
---|
| 702 | !CDIR NODEP |
---|
| 703 | !OCL NOVREC |
---|
| 704 | DO ijk = 1, lot |
---|
| 705 | c(ja+j) = (a(ia+i)+a(ic+i)) + (a(ib+i)+a(id+i)) |
---|
| 706 | c(jc+j) = (a(ia+i)+a(ic+i)) - (a(ib+i)+a(id+i)) |
---|
| 707 | c(jb+j) = a(ia+i) - a(ic+i) |
---|
| 708 | d(jb+j) = a(id+i) - a(ib+i) |
---|
| 709 | i = i + inc3 |
---|
| 710 | j = j + inc4 |
---|
| 711 | END DO |
---|
| 712 | ibase = ibase + inc1 |
---|
| 713 | jbase = jbase + inc2 |
---|
| 714 | END DO |
---|
| 715 | ja = ja + jink |
---|
| 716 | jink = 2*jink |
---|
| 717 | jb = jb + jink |
---|
| 718 | jc = jc - jink |
---|
| 719 | jd = jd - jink |
---|
| 720 | ibase = ibase + ijump |
---|
| 721 | ijump = 2*ijump + iink |
---|
| 722 | IF (jb==jc) GO TO 80 |
---|
| 723 | DO k = la, kstop, la |
---|
| 724 | kb = k + k |
---|
| 725 | kc = kb + kb |
---|
| 726 | kd = kc + kb |
---|
| 727 | c1 = trigs(kb+1) |
---|
| 728 | s1 = trigs(kb+2) |
---|
| 729 | c2 = trigs(kc+1) |
---|
| 730 | s2 = trigs(kc+2) |
---|
| 731 | c3 = trigs(kd+1) |
---|
| 732 | s3 = trigs(kd+2) |
---|
| 733 | jbase = 0 |
---|
| 734 | DO l = 1, la |
---|
| 735 | i = ibase |
---|
| 736 | j = jbase |
---|
| 737 | !DIR$ IVDEP |
---|
| 738 | !CDIR NODEP |
---|
| 739 | !OCL NOVREC |
---|
| 740 | DO ijk = 1, lot |
---|
| 741 | a0 = a(ia+i) + (c2*a(ic+i)+s2*b(ic+i)) |
---|
| 742 | a2 = a(ia+i) - (c2*a(ic+i)+s2*b(ic+i)) |
---|
| 743 | a1 = (c1*a(ib+i)+s1*b(ib+i)) + (c3*a(id+i)+s3*b(id+i)) |
---|
| 744 | a3 = (c1*a(ib+i)+s1*b(ib+i)) - (c3*a(id+i)+s3*b(id+i)) |
---|
| 745 | b0 = b(ia+i) + (c2*b(ic+i)-s2*a(ic+i)) |
---|
| 746 | b2 = b(ia+i) - (c2*b(ic+i)-s2*a(ic+i)) |
---|
| 747 | b1 = (c1*b(ib+i)-s1*a(ib+i)) + (c3*b(id+i)-s3*a(id+i)) |
---|
| 748 | b3 = (c1*b(ib+i)-s1*a(ib+i)) - (c3*b(id+i)-s3*a(id+i)) |
---|
| 749 | c(ja+j) = a0 + a1 |
---|
| 750 | c(jc+j) = a0 - a1 |
---|
| 751 | d(ja+j) = b0 + b1 |
---|
| 752 | d(jc+j) = b1 - b0 |
---|
| 753 | c(jb+j) = a2 + b3 |
---|
| 754 | c(jd+j) = a2 - b3 |
---|
| 755 | d(jb+j) = b2 - a3 |
---|
| 756 | d(jd+j) = -(b2+a3) |
---|
| 757 | i = i + inc3 |
---|
| 758 | j = j + inc4 |
---|
| 759 | END DO |
---|
| 760 | ibase = ibase + inc1 |
---|
| 761 | jbase = jbase + inc2 |
---|
| 762 | END DO |
---|
| 763 | ibase = ibase + ijump |
---|
| 764 | ja = ja + jink |
---|
| 765 | jb = jb + jink |
---|
| 766 | jc = jc - jink |
---|
| 767 | jd = jd - jink |
---|
| 768 | END DO |
---|
| 769 | IF (jb>jc) GO TO 170 |
---|
| 770 | 80 CONTINUE |
---|
[1320] | 771 | sin45 = SQRT(0.5_wp) |
---|
[1] | 772 | jbase = 0 |
---|
| 773 | DO l = 1, la |
---|
| 774 | i = ibase |
---|
| 775 | j = jbase |
---|
| 776 | !DIR$ IVDEP |
---|
| 777 | !CDIR NODEP |
---|
| 778 | !OCL NOVREC |
---|
| 779 | DO ijk = 1, lot |
---|
| 780 | c(ja+j) = a(ia+i) + sin45*(a(ib+i)-a(id+i)) |
---|
| 781 | c(jb+j) = a(ia+i) - sin45*(a(ib+i)-a(id+i)) |
---|
| 782 | d(ja+j) = -a(ic+i) - sin45*(a(ib+i)+a(id+i)) |
---|
| 783 | d(jb+j) = a(ic+i) - sin45*(a(ib+i)+a(id+i)) |
---|
| 784 | i = i + inc3 |
---|
| 785 | j = j + inc4 |
---|
| 786 | END DO |
---|
| 787 | ibase = ibase + inc1 |
---|
| 788 | jbase = jbase + inc2 |
---|
| 789 | END DO |
---|
| 790 | |
---|
| 791 | GO TO 170 |
---|
| 792 | 90 CONTINUE |
---|
[1320] | 793 | z = 1.0_wp/REAL(n) |
---|
[1] | 794 | DO l = 1, la |
---|
| 795 | i = ibase |
---|
| 796 | j = jbase |
---|
| 797 | !DIR$ IVDEP |
---|
| 798 | !CDIR NODEP |
---|
| 799 | !OCL NOVREC |
---|
| 800 | DO ijk = 1, lot |
---|
| 801 | c(ja+j) = z*((a(ia+i)+a(ic+i))+(a(ib+i)+a(id+i))) |
---|
| 802 | c(jc+j) = z*((a(ia+i)+a(ic+i))-(a(ib+i)+a(id+i))) |
---|
| 803 | c(jb+j) = z*(a(ia+i)-a(ic+i)) |
---|
| 804 | d(jb+j) = z*(a(id+i)-a(ib+i)) |
---|
| 805 | i = i + inc3 |
---|
| 806 | j = j + inc4 |
---|
| 807 | END DO |
---|
| 808 | ibase = ibase + inc1 |
---|
| 809 | jbase = jbase + inc2 |
---|
| 810 | END DO |
---|
| 811 | GO TO 170 |
---|
| 812 | |
---|
| 813 | ! Coding for factor 5 |
---|
| 814 | |
---|
| 815 | 100 CONTINUE |
---|
| 816 | ia = 1 |
---|
| 817 | ib = ia + iink |
---|
| 818 | ic = ib + iink |
---|
| 819 | id = ic + iink |
---|
| 820 | ie = id + iink |
---|
| 821 | ja = 1 |
---|
| 822 | jb = ja + (2*m-la)*inc2 |
---|
| 823 | jc = jb + 2*m*inc2 |
---|
| 824 | jd = jc |
---|
| 825 | je = jb |
---|
| 826 | |
---|
| 827 | IF (la==m) GO TO 120 |
---|
| 828 | |
---|
| 829 | DO l = 1, la |
---|
| 830 | i = ibase |
---|
| 831 | j = jbase |
---|
| 832 | !DIR$ IVDEP |
---|
| 833 | !CDIR NODEP |
---|
| 834 | !OCL NOVREC |
---|
| 835 | DO ijk = 1, lot |
---|
| 836 | a1 = a(ib+i) + a(ie+i) |
---|
| 837 | a3 = a(ib+i) - a(ie+i) |
---|
| 838 | a2 = a(ic+i) + a(id+i) |
---|
| 839 | a4 = a(ic+i) - a(id+i) |
---|
| 840 | a5 = a(ia+i) - 0.25*(a1+a2) |
---|
| 841 | a6 = qrt5*(a1-a2) |
---|
| 842 | c(ja+j) = a(ia+i) + (a1+a2) |
---|
| 843 | c(jb+j) = a5 + a6 |
---|
| 844 | c(jc+j) = a5 - a6 |
---|
| 845 | d(jb+j) = -sin72*a3 - sin36*a4 |
---|
| 846 | d(jc+j) = -sin36*a3 + sin72*a4 |
---|
| 847 | i = i + inc3 |
---|
| 848 | j = j + inc4 |
---|
| 849 | END DO |
---|
| 850 | ibase = ibase + inc1 |
---|
| 851 | jbase = jbase + inc2 |
---|
| 852 | END DO |
---|
| 853 | ja = ja + jink |
---|
| 854 | jink = 2*jink |
---|
| 855 | jb = jb + jink |
---|
| 856 | jc = jc + jink |
---|
| 857 | jd = jd - jink |
---|
| 858 | je = je - jink |
---|
| 859 | ibase = ibase + ijump |
---|
| 860 | ijump = 2*ijump + iink |
---|
| 861 | IF (jb==jd) GO TO 110 |
---|
| 862 | DO k = la, kstop, la |
---|
| 863 | kb = k + k |
---|
| 864 | kc = kb + kb |
---|
| 865 | kd = kc + kb |
---|
| 866 | ke = kd + kb |
---|
| 867 | c1 = trigs(kb+1) |
---|
| 868 | s1 = trigs(kb+2) |
---|
| 869 | c2 = trigs(kc+1) |
---|
| 870 | s2 = trigs(kc+2) |
---|
| 871 | c3 = trigs(kd+1) |
---|
| 872 | s3 = trigs(kd+2) |
---|
| 873 | c4 = trigs(ke+1) |
---|
| 874 | s4 = trigs(ke+2) |
---|
| 875 | jbase = 0 |
---|
| 876 | DO l = 1, la |
---|
| 877 | i = ibase |
---|
| 878 | j = jbase |
---|
| 879 | !DIR$ IVDEP |
---|
| 880 | !CDIR NODEP |
---|
| 881 | !OCL NOVREC |
---|
| 882 | DO ijk = 1, lot |
---|
| 883 | a1 = (c1*a(ib+i)+s1*b(ib+i)) + (c4*a(ie+i)+s4*b(ie+i)) |
---|
| 884 | a3 = (c1*a(ib+i)+s1*b(ib+i)) - (c4*a(ie+i)+s4*b(ie+i)) |
---|
| 885 | a2 = (c2*a(ic+i)+s2*b(ic+i)) + (c3*a(id+i)+s3*b(id+i)) |
---|
| 886 | a4 = (c2*a(ic+i)+s2*b(ic+i)) - (c3*a(id+i)+s3*b(id+i)) |
---|
| 887 | b1 = (c1*b(ib+i)-s1*a(ib+i)) + (c4*b(ie+i)-s4*a(ie+i)) |
---|
| 888 | b3 = (c1*b(ib+i)-s1*a(ib+i)) - (c4*b(ie+i)-s4*a(ie+i)) |
---|
| 889 | b2 = (c2*b(ic+i)-s2*a(ic+i)) + (c3*b(id+i)-s3*a(id+i)) |
---|
| 890 | b4 = (c2*b(ic+i)-s2*a(ic+i)) - (c3*b(id+i)-s3*a(id+i)) |
---|
| 891 | a5 = a(ia+i) - 0.25*(a1+a2) |
---|
| 892 | a6 = qrt5*(a1-a2) |
---|
| 893 | b5 = b(ia+i) - 0.25*(b1+b2) |
---|
| 894 | b6 = qrt5*(b1-b2) |
---|
| 895 | a10 = a5 + a6 |
---|
| 896 | a20 = a5 - a6 |
---|
| 897 | b10 = b5 + b6 |
---|
| 898 | b20 = b5 - b6 |
---|
| 899 | a11 = sin72*b3 + sin36*b4 |
---|
| 900 | a21 = sin36*b3 - sin72*b4 |
---|
| 901 | b11 = sin72*a3 + sin36*a4 |
---|
| 902 | b21 = sin36*a3 - sin72*a4 |
---|
| 903 | c(ja+j) = a(ia+i) + (a1+a2) |
---|
| 904 | c(jb+j) = a10 + a11 |
---|
| 905 | c(je+j) = a10 - a11 |
---|
| 906 | c(jc+j) = a20 + a21 |
---|
| 907 | c(jd+j) = a20 - a21 |
---|
| 908 | d(ja+j) = b(ia+i) + (b1+b2) |
---|
| 909 | d(jb+j) = b10 - b11 |
---|
| 910 | d(je+j) = -(b10+b11) |
---|
| 911 | d(jc+j) = b20 - b21 |
---|
| 912 | d(jd+j) = -(b20+b21) |
---|
| 913 | i = i + inc3 |
---|
| 914 | j = j + inc4 |
---|
| 915 | END DO |
---|
| 916 | ibase = ibase + inc1 |
---|
| 917 | jbase = jbase + inc2 |
---|
| 918 | END DO |
---|
| 919 | ibase = ibase + ijump |
---|
| 920 | ja = ja + jink |
---|
| 921 | jb = jb + jink |
---|
| 922 | jc = jc + jink |
---|
| 923 | jd = jd - jink |
---|
| 924 | je = je - jink |
---|
| 925 | END DO |
---|
| 926 | IF (jb>jd) GO TO 170 |
---|
| 927 | 110 CONTINUE |
---|
| 928 | jbase = 0 |
---|
| 929 | DO l = 1, la |
---|
| 930 | i = ibase |
---|
| 931 | j = jbase |
---|
| 932 | !DIR$ IVDEP |
---|
| 933 | !CDIR NODEP |
---|
| 934 | !OCL NOVREC |
---|
| 935 | DO ijk = 1, lot |
---|
| 936 | a1 = a(ib+i) + a(ie+i) |
---|
| 937 | a3 = a(ib+i) - a(ie+i) |
---|
| 938 | a2 = a(ic+i) + a(id+i) |
---|
| 939 | a4 = a(ic+i) - a(id+i) |
---|
| 940 | a5 = a(ia+i) + 0.25*(a3-a4) |
---|
| 941 | a6 = qrt5*(a3+a4) |
---|
| 942 | c(ja+j) = a5 + a6 |
---|
| 943 | c(jb+j) = a5 - a6 |
---|
| 944 | c(jc+j) = a(ia+i) - (a3-a4) |
---|
| 945 | d(ja+j) = -sin36*a1 - sin72*a2 |
---|
| 946 | d(jb+j) = -sin72*a1 + sin36*a2 |
---|
| 947 | i = i + inc3 |
---|
| 948 | j = j + inc4 |
---|
| 949 | END DO |
---|
| 950 | ibase = ibase + inc1 |
---|
| 951 | jbase = jbase + inc2 |
---|
| 952 | END DO |
---|
| 953 | |
---|
| 954 | GO TO 170 |
---|
| 955 | 120 CONTINUE |
---|
[1320] | 956 | z = 1.0_wp/REAL(n) |
---|
[1] | 957 | zqrt5 = z*qrt5 |
---|
| 958 | zsin36 = z*sin36 |
---|
| 959 | zsin72 = z*sin72 |
---|
| 960 | DO l = 1, la |
---|
| 961 | i = ibase |
---|
| 962 | j = jbase |
---|
| 963 | !DIR$ IVDEP |
---|
| 964 | !CDIR NODEP |
---|
| 965 | !OCL NOVREC |
---|
| 966 | DO ijk = 1, lot |
---|
| 967 | a1 = a(ib+i) + a(ie+i) |
---|
| 968 | a3 = a(ib+i) - a(ie+i) |
---|
| 969 | a2 = a(ic+i) + a(id+i) |
---|
| 970 | a4 = a(ic+i) - a(id+i) |
---|
| 971 | a5 = z*(a(ia+i)-0.25*(a1+a2)) |
---|
| 972 | a6 = zqrt5*(a1-a2) |
---|
| 973 | c(ja+j) = z*(a(ia+i)+(a1+a2)) |
---|
| 974 | c(jb+j) = a5 + a6 |
---|
| 975 | c(jc+j) = a5 - a6 |
---|
| 976 | d(jb+j) = -zsin72*a3 - zsin36*a4 |
---|
| 977 | d(jc+j) = -zsin36*a3 + zsin72*a4 |
---|
| 978 | i = i + inc3 |
---|
| 979 | j = j + inc4 |
---|
| 980 | END DO |
---|
| 981 | ibase = ibase + inc1 |
---|
| 982 | jbase = jbase + inc2 |
---|
| 983 | END DO |
---|
| 984 | GO TO 170 |
---|
| 985 | |
---|
| 986 | ! Coding for factor 6 |
---|
| 987 | |
---|
| 988 | 130 CONTINUE |
---|
| 989 | ia = 1 |
---|
| 990 | ib = ia + iink |
---|
| 991 | ic = ib + iink |
---|
| 992 | id = ic + iink |
---|
| 993 | ie = id + iink |
---|
| 994 | if = ie + iink |
---|
| 995 | ja = 1 |
---|
| 996 | jb = ja + (2*m-la)*inc2 |
---|
| 997 | jc = jb + 2*m*inc2 |
---|
| 998 | jd = jc + 2*m*inc2 |
---|
| 999 | je = jc |
---|
| 1000 | jf = jb |
---|
| 1001 | |
---|
| 1002 | IF (la==m) GO TO 150 |
---|
| 1003 | |
---|
| 1004 | DO l = 1, la |
---|
| 1005 | i = ibase |
---|
| 1006 | j = jbase |
---|
| 1007 | !DIR$ IVDEP |
---|
| 1008 | !CDIR NODEP |
---|
| 1009 | !OCL NOVREC |
---|
| 1010 | DO ijk = 1, lot |
---|
| 1011 | a11 = (a(ic+i)+a(if+i)) + (a(ib+i)+a(ie+i)) |
---|
| 1012 | c(ja+j) = (a(ia+i)+a(id+i)) + a11 |
---|
| 1013 | c(jc+j) = (a(ia+i)+a(id+i)-0.5*a11) |
---|
| 1014 | d(jc+j) = sin60*((a(ic+i)+a(if+i))-(a(ib+i)+a(ie+i))) |
---|
| 1015 | a11 = (a(ic+i)-a(if+i)) + (a(ie+i)-a(ib+i)) |
---|
| 1016 | c(jb+j) = (a(ia+i)-a(id+i)) - 0.5*a11 |
---|
| 1017 | d(jb+j) = sin60*((a(ie+i)-a(ib+i))-(a(ic+i)-a(if+i))) |
---|
| 1018 | c(jd+j) = (a(ia+i)-a(id+i)) + a11 |
---|
| 1019 | i = i + inc3 |
---|
| 1020 | j = j + inc4 |
---|
| 1021 | END DO |
---|
| 1022 | ibase = ibase + inc1 |
---|
| 1023 | jbase = jbase + inc2 |
---|
| 1024 | END DO |
---|
| 1025 | ja = ja + jink |
---|
| 1026 | jink = 2*jink |
---|
| 1027 | jb = jb + jink |
---|
| 1028 | jc = jc + jink |
---|
| 1029 | jd = jd - jink |
---|
| 1030 | je = je - jink |
---|
| 1031 | jf = jf - jink |
---|
| 1032 | ibase = ibase + ijump |
---|
| 1033 | ijump = 2*ijump + iink |
---|
| 1034 | IF (jc==jd) GO TO 140 |
---|
| 1035 | DO k = la, kstop, la |
---|
| 1036 | kb = k + k |
---|
| 1037 | kc = kb + kb |
---|
| 1038 | kd = kc + kb |
---|
| 1039 | ke = kd + kb |
---|
| 1040 | kf = ke + kb |
---|
| 1041 | c1 = trigs(kb+1) |
---|
| 1042 | s1 = trigs(kb+2) |
---|
| 1043 | c2 = trigs(kc+1) |
---|
| 1044 | s2 = trigs(kc+2) |
---|
| 1045 | c3 = trigs(kd+1) |
---|
| 1046 | s3 = trigs(kd+2) |
---|
| 1047 | c4 = trigs(ke+1) |
---|
| 1048 | s4 = trigs(ke+2) |
---|
| 1049 | c5 = trigs(kf+1) |
---|
| 1050 | s5 = trigs(kf+2) |
---|
| 1051 | jbase = 0 |
---|
| 1052 | DO l = 1, la |
---|
| 1053 | i = ibase |
---|
| 1054 | j = jbase |
---|
| 1055 | !DIR$ IVDEP |
---|
| 1056 | !CDIR NODEP |
---|
| 1057 | !OCL NOVREC |
---|
| 1058 | DO ijk = 1, lot |
---|
| 1059 | a1 = c1*a(ib+i) + s1*b(ib+i) |
---|
| 1060 | b1 = c1*b(ib+i) - s1*a(ib+i) |
---|
| 1061 | a2 = c2*a(ic+i) + s2*b(ic+i) |
---|
| 1062 | b2 = c2*b(ic+i) - s2*a(ic+i) |
---|
| 1063 | a3 = c3*a(id+i) + s3*b(id+i) |
---|
| 1064 | b3 = c3*b(id+i) - s3*a(id+i) |
---|
| 1065 | a4 = c4*a(ie+i) + s4*b(ie+i) |
---|
| 1066 | b4 = c4*b(ie+i) - s4*a(ie+i) |
---|
| 1067 | a5 = c5*a(if+i) + s5*b(if+i) |
---|
| 1068 | b5 = c5*b(if+i) - s5*a(if+i) |
---|
| 1069 | a11 = (a2+a5) + (a1+a4) |
---|
| 1070 | a20 = (a(ia+i)+a3) - 0.5*a11 |
---|
| 1071 | a21 = sin60*((a2+a5)-(a1+a4)) |
---|
| 1072 | b11 = (b2+b5) + (b1+b4) |
---|
| 1073 | b20 = (b(ia+i)+b3) - 0.5*b11 |
---|
| 1074 | b21 = sin60*((b2+b5)-(b1+b4)) |
---|
| 1075 | c(ja+j) = (a(ia+i)+a3) + a11 |
---|
| 1076 | d(ja+j) = (b(ia+i)+b3) + b11 |
---|
| 1077 | c(jc+j) = a20 - b21 |
---|
| 1078 | d(jc+j) = a21 + b20 |
---|
| 1079 | c(je+j) = a20 + b21 |
---|
| 1080 | d(je+j) = a21 - b20 |
---|
| 1081 | a11 = (a2-a5) + (a4-a1) |
---|
| 1082 | a20 = (a(ia+i)-a3) - 0.5*a11 |
---|
| 1083 | a21 = sin60*((a4-a1)-(a2-a5)) |
---|
| 1084 | b11 = (b5-b2) - (b4-b1) |
---|
| 1085 | b20 = (b3-b(ia+i)) - 0.5*b11 |
---|
| 1086 | b21 = sin60*((b5-b2)+(b4-b1)) |
---|
| 1087 | c(jb+j) = a20 - b21 |
---|
| 1088 | d(jb+j) = a21 - b20 |
---|
| 1089 | c(jd+j) = a11 + (a(ia+i)-a3) |
---|
| 1090 | d(jd+j) = b11 + (b3-b(ia+i)) |
---|
| 1091 | c(jf+j) = a20 + b21 |
---|
| 1092 | d(jf+j) = a21 + b20 |
---|
| 1093 | i = i + inc3 |
---|
| 1094 | j = j + inc4 |
---|
| 1095 | END DO |
---|
| 1096 | ibase = ibase + inc1 |
---|
| 1097 | jbase = jbase + inc2 |
---|
| 1098 | END DO |
---|
| 1099 | ibase = ibase + ijump |
---|
| 1100 | ja = ja + jink |
---|
| 1101 | jb = jb + jink |
---|
| 1102 | jc = jc + jink |
---|
| 1103 | jd = jd - jink |
---|
| 1104 | je = je - jink |
---|
| 1105 | jf = jf - jink |
---|
| 1106 | END DO |
---|
| 1107 | IF (jc>jd) GO TO 170 |
---|
| 1108 | 140 CONTINUE |
---|
| 1109 | jbase = 0 |
---|
| 1110 | DO l = 1, la |
---|
| 1111 | i = ibase |
---|
| 1112 | j = jbase |
---|
| 1113 | !DIR$ IVDEP |
---|
| 1114 | !CDIR NODEP |
---|
| 1115 | !OCL NOVREC |
---|
| 1116 | DO ijk = 1, lot |
---|
| 1117 | c(ja+j) = (a(ia+i)+0.5*(a(ic+i)-a(ie+i))) + sin60*(a(ib+i)-a(if+i)) |
---|
| 1118 | d(ja+j) = -(a(id+i)+0.5*(a(ib+i)+a(if+i))) - sin60*(a(ic+i)+a(ie+i)) |
---|
| 1119 | c(jb+j) = a(ia+i) - (a(ic+i)-a(ie+i)) |
---|
| 1120 | d(jb+j) = a(id+i) - (a(ib+i)+a(if+i)) |
---|
| 1121 | c(jc+j) = (a(ia+i)+0.5*(a(ic+i)-a(ie+i))) - sin60*(a(ib+i)-a(if+i)) |
---|
| 1122 | d(jc+j) = -(a(id+i)+0.5*(a(ib+i)+a(if+i))) + sin60*(a(ic+i)+a(ie+i)) |
---|
| 1123 | i = i + inc3 |
---|
| 1124 | j = j + inc4 |
---|
| 1125 | END DO |
---|
| 1126 | ibase = ibase + inc1 |
---|
| 1127 | jbase = jbase + inc2 |
---|
| 1128 | END DO |
---|
| 1129 | |
---|
| 1130 | GO TO 170 |
---|
| 1131 | 150 CONTINUE |
---|
[1320] | 1132 | z = 1.0_wp/REAL(n) |
---|
[1] | 1133 | zsin60 = z*sin60 |
---|
| 1134 | DO l = 1, la |
---|
| 1135 | i = ibase |
---|
| 1136 | j = jbase |
---|
| 1137 | !DIR$ IVDEP |
---|
| 1138 | !CDIR NODEP |
---|
| 1139 | !OCL NOVREC |
---|
| 1140 | DO ijk = 1, lot |
---|
| 1141 | a11 = (a(ic+i)+a(if+i)) + (a(ib+i)+a(ie+i)) |
---|
| 1142 | c(ja+j) = z*((a(ia+i)+a(id+i))+a11) |
---|
| 1143 | c(jc+j) = z*((a(ia+i)+a(id+i))-0.5*a11) |
---|
| 1144 | d(jc+j) = zsin60*((a(ic+i)+a(if+i))-(a(ib+i)+a(ie+i))) |
---|
| 1145 | a11 = (a(ic+i)-a(if+i)) + (a(ie+i)-a(ib+i)) |
---|
| 1146 | c(jb+j) = z*((a(ia+i)-a(id+i))-0.5*a11) |
---|
| 1147 | d(jb+j) = zsin60*((a(ie+i)-a(ib+i))-(a(ic+i)-a(if+i))) |
---|
| 1148 | c(jd+j) = z*((a(ia+i)-a(id+i))+a11) |
---|
| 1149 | i = i + inc3 |
---|
| 1150 | j = j + inc4 |
---|
| 1151 | END DO |
---|
| 1152 | ibase = ibase + inc1 |
---|
| 1153 | jbase = jbase + inc2 |
---|
| 1154 | END DO |
---|
| 1155 | GO TO 170 |
---|
| 1156 | |
---|
| 1157 | ! Coding for factor 8 |
---|
| 1158 | |
---|
| 1159 | 160 CONTINUE |
---|
| 1160 | ibad = 3 |
---|
| 1161 | IF (la/=m) GO TO 180 |
---|
| 1162 | ia = 1 |
---|
| 1163 | ib = ia + iink |
---|
| 1164 | ic = ib + iink |
---|
| 1165 | id = ic + iink |
---|
| 1166 | ie = id + iink |
---|
| 1167 | if = ie + iink |
---|
| 1168 | ig = if + iink |
---|
| 1169 | ih = ig + iink |
---|
| 1170 | ja = 1 |
---|
| 1171 | jb = ja + la*inc2 |
---|
| 1172 | jc = jb + 2*m*inc2 |
---|
| 1173 | jd = jc + 2*m*inc2 |
---|
| 1174 | je = jd + 2*m*inc2 |
---|
[1320] | 1175 | z = 1.0_wp/REAL(n) |
---|
[1] | 1176 | zsin45 = z*SQRT(0.5) |
---|
| 1177 | |
---|
| 1178 | DO l = 1, la |
---|
| 1179 | i = ibase |
---|
| 1180 | j = jbase |
---|
| 1181 | !DIR$ IVDEP |
---|
| 1182 | !CDIR NODEP |
---|
| 1183 | !OCL NOVREC |
---|
| 1184 | DO ijk = 1, lot |
---|
| 1185 | c(ja+j) = z*(((a(ia+i)+a(ie+i))+(a(ic+i)+a(ig+i)))+((a(id+i)+ & |
---|
| 1186 | & a(ih+i))+(a(ib+i)+a(if+i)))) |
---|
| 1187 | c(je+j) = z*(((a(ia+i)+a(ie+i))+(a(ic+i)+a(ig+i)))-((a(id+i)+ & |
---|
| 1188 | & a(ih+i))+(a(ib+i)+a(if+i)))) |
---|
| 1189 | c(jc+j) = z*((a(ia+i)+a(ie+i))-(a(ic+i)+a(ig+i))) |
---|
| 1190 | d(jc+j) = z*((a(id+i)+a(ih+i))-(a(ib+i)+a(if+i))) |
---|
| 1191 | c(jb+j) = z*(a(ia+i)-a(ie+i)) + zsin45*((a(ih+i)-a(id+i))-(a(if+ & |
---|
| 1192 | & i)-a(ib+i))) |
---|
| 1193 | c(jd+j) = z*(a(ia+i)-a(ie+i)) - zsin45*((a(ih+i)-a(id+i))-(a(if+ & |
---|
| 1194 | & i)-a(ib+i))) |
---|
| 1195 | d(jb+j) = zsin45*((a(ih+i)-a(id+i))+(a(if+i)-a(ib+i))) + & |
---|
| 1196 | & z*(a(ig+i)-a(ic+i)) |
---|
| 1197 | d(jd+j) = zsin45*((a(ih+i)-a(id+i))+(a(if+i)-a(ib+i))) - & |
---|
| 1198 | & z*(a(ig+i)-a(ic+i)) |
---|
| 1199 | i = i + inc3 |
---|
| 1200 | j = j + inc4 |
---|
| 1201 | END DO |
---|
| 1202 | ibase = ibase + inc1 |
---|
| 1203 | jbase = jbase + inc2 |
---|
| 1204 | END DO |
---|
| 1205 | |
---|
| 1206 | ! Return |
---|
| 1207 | |
---|
| 1208 | 170 CONTINUE |
---|
| 1209 | ibad = 0 |
---|
| 1210 | 180 CONTINUE |
---|
| 1211 | ierr = ibad |
---|
| 1212 | RETURN |
---|
| 1213 | END SUBROUTINE qpassm |
---|
| 1214 | |
---|
| 1215 | SUBROUTINE rpassm(a,b,c,d,trigs,inc1,inc2,inc3,inc4,lot,n,ifac,la,ierr) |
---|
| 1216 | ! Dimension a(n),b(n),c(n),d(n),trigs(n) |
---|
| 1217 | |
---|
[1320] | 1218 | USE kinds |
---|
| 1219 | |
---|
[1] | 1220 | IMPLICIT NONE |
---|
| 1221 | |
---|
| 1222 | ! Scalar arguments |
---|
[1320] | 1223 | INTEGER(iwp) :: ierr !: |
---|
| 1224 | INTEGER(iwp) :: ifac !: |
---|
| 1225 | INTEGER(iwp) :: inc1 !: |
---|
| 1226 | INTEGER(iwp) :: inc2 !: |
---|
| 1227 | INTEGER(iwp) :: inc3 !: |
---|
| 1228 | INTEGER(iwp) :: inc4 !: |
---|
| 1229 | INTEGER(iwp) :: la !: |
---|
| 1230 | INTEGER(iwp) :: lot !: |
---|
| 1231 | INTEGER(iwp) :: n !: |
---|
[1] | 1232 | |
---|
| 1233 | ! Array arguments |
---|
[1320] | 1234 | REAL(wp) :: a(*) !: |
---|
| 1235 | REAL(wp) :: b(*) !: |
---|
| 1236 | REAL(wp) :: c(*) !: |
---|
| 1237 | REAL(wp) :: d(*) !: |
---|
| 1238 | REAL(wp) :: trigs(*) !: |
---|
[1] | 1239 | |
---|
| 1240 | ! Local scalars: |
---|
[1320] | 1241 | REAL(wp) :: c1 !: |
---|
| 1242 | REAL(wp) :: c2 !: |
---|
| 1243 | REAL(wp) :: c3 !: |
---|
| 1244 | REAL(wp) :: c4 !: |
---|
| 1245 | REAL(wp) :: c5 !: |
---|
| 1246 | REAL(wp) :: qqrt5 !: |
---|
| 1247 | REAL(wp) :: qrt5 !: |
---|
| 1248 | REAL(wp) :: s1 !: |
---|
| 1249 | REAL(wp) :: s2 !: |
---|
| 1250 | REAL(wp) :: s3 !: |
---|
| 1251 | REAL(wp) :: s4 !: |
---|
| 1252 | REAL(wp) :: s5 !: |
---|
| 1253 | REAL(wp) :: sin36 !: |
---|
| 1254 | REAL(wp) :: sin45 !: |
---|
| 1255 | REAL(wp) :: sin60 !: |
---|
| 1256 | REAL(wp) :: sin72 !: |
---|
| 1257 | REAL(wp) :: ssin36 !: |
---|
| 1258 | REAL(wp) :: ssin45 !: |
---|
| 1259 | REAL(wp) :: ssin60 !: |
---|
| 1260 | REAL(wp) :: ssin72 !: |
---|
[1] | 1261 | |
---|
[1320] | 1262 | INTEGER(iwp) :: i !: |
---|
| 1263 | INTEGER(iwp) :: ia !: |
---|
| 1264 | INTEGER(iwp) :: ib !: |
---|
| 1265 | INTEGER(iwp) :: ibad !: |
---|
| 1266 | INTEGER(iwp) :: ibase !: |
---|
| 1267 | INTEGER(iwp) :: ic !: |
---|
| 1268 | INTEGER(iwp) :: id !: |
---|
| 1269 | INTEGER(iwp) :: ie !: |
---|
| 1270 | INTEGER(iwp) :: if !: |
---|
| 1271 | INTEGER(iwp) :: igo !: |
---|
| 1272 | INTEGER(iwp) :: iink !: |
---|
| 1273 | INTEGER(iwp) :: ijk !: |
---|
| 1274 | INTEGER(iwp) :: j !: |
---|
| 1275 | INTEGER(iwp) :: ja !: |
---|
| 1276 | INTEGER(iwp) :: jb !: |
---|
| 1277 | INTEGER(iwp) :: jbase !: |
---|
| 1278 | INTEGER(iwp) :: jc !: |
---|
| 1279 | INTEGER(iwp) :: jd !: |
---|
| 1280 | INTEGER(iwp) :: je !: |
---|
| 1281 | INTEGER(iwp) :: jf !: |
---|
| 1282 | INTEGER(iwp) :: jg !: |
---|
| 1283 | INTEGER(iwp) :: jh !: |
---|
| 1284 | INTEGER(iwp) :: jink !: |
---|
| 1285 | INTEGER(iwp) :: jump !: |
---|
| 1286 | INTEGER(iwp) :: k !: |
---|
| 1287 | INTEGER(iwp) :: kb !: |
---|
| 1288 | INTEGER(iwp) :: kc !: |
---|
| 1289 | INTEGER(iwp) :: kd !: |
---|
| 1290 | INTEGER(iwp) :: ke !: |
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| 1291 | INTEGER(iwp) :: kf !: |
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| 1292 | INTEGER(iwp) :: kstop !: |
---|
| 1293 | INTEGER(iwp) :: l !: |
---|
| 1294 | INTEGER(iwp) :: m !: |
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| 1295 | |
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[1] | 1296 | ! Local arrays: |
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[1320] | 1297 | REAL(wp) :: a10(nfft) !: |
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| 1298 | REAL(wp) :: a11(nfft) !: |
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| 1299 | REAL(wp) :: a20(nfft) !: |
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| 1300 | REAL(wp) :: a21(nfft) !: |
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| 1301 | REAL(wp) :: b10(nfft) !: |
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| 1302 | REAL(wp) :: b11(nfft) !: |
---|
| 1303 | REAL(wp) :: b20(nfft) !: |
---|
| 1304 | REAL(wp) :: b21(nfft) !: |
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[1] | 1305 | |
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| 1306 | ! Intrinsic functions |
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[1320] | 1307 | ! INTRINSIC SQRT |
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[1] | 1308 | |
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| 1309 | ! Data statements |
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[1320] | 1310 | DATA sin36/0.587785252292473_wp/, sin72/0.951056516295154_wp/, & |
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| 1311 | & qrt5/0.559016994374947_wp/, sin60/0.866025403784437_wp/ |
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[1] | 1312 | |
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| 1313 | |
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| 1314 | ! Executable statements |
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| 1315 | |
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| 1316 | m = n/ifac |
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| 1317 | iink = la*inc1 |
---|
| 1318 | jink = la*inc2 |
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| 1319 | jump = (ifac-1)*jink |
---|
| 1320 | kstop = (n-ifac)/(2*ifac) |
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| 1321 | |
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| 1322 | ibad = 1 |
---|
| 1323 | IF (lot>nfft) GO TO 180 |
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| 1324 | ibase = 0 |
---|
| 1325 | jbase = 0 |
---|
| 1326 | igo = ifac - 1 |
---|
| 1327 | IF (igo==7) igo = 6 |
---|
| 1328 | ibad = 2 |
---|
| 1329 | IF (igo<1 .OR. igo>6) GO TO 180 |
---|
| 1330 | GO TO (10,40,70,100,130,160) igo |
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| 1331 | |
---|
| 1332 | ! Coding for factor 2 |
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| 1333 | |
---|
| 1334 | 10 CONTINUE |
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| 1335 | ia = 1 |
---|
| 1336 | ib = ia + (2*m-la)*inc1 |
---|
| 1337 | ja = 1 |
---|
| 1338 | jb = ja + jink |
---|
| 1339 | |
---|
| 1340 | IF (la==m) GO TO 30 |
---|
| 1341 | |
---|
| 1342 | DO l = 1, la |
---|
| 1343 | i = ibase |
---|
| 1344 | j = jbase |
---|
| 1345 | !DIR$ IVDEP |
---|
| 1346 | !CDIR NODEP |
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| 1347 | !OCL NOVREC |
---|
| 1348 | DO ijk = 1, lot |
---|
| 1349 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1350 | c(jb+j) = a(ia+i) - a(ib+i) |
---|
| 1351 | i = i + inc3 |
---|
| 1352 | j = j + inc4 |
---|
| 1353 | END DO |
---|
| 1354 | ibase = ibase + inc1 |
---|
| 1355 | jbase = jbase + inc2 |
---|
| 1356 | END DO |
---|
| 1357 | ia = ia + iink |
---|
| 1358 | iink = 2*iink |
---|
| 1359 | ib = ib - iink |
---|
| 1360 | ibase = 0 |
---|
| 1361 | jbase = jbase + jump |
---|
| 1362 | jump = 2*jump + jink |
---|
| 1363 | IF (ia==ib) GO TO 20 |
---|
| 1364 | DO k = la, kstop, la |
---|
| 1365 | kb = k + k |
---|
| 1366 | c1 = trigs(kb+1) |
---|
| 1367 | s1 = trigs(kb+2) |
---|
| 1368 | ibase = 0 |
---|
| 1369 | DO l = 1, la |
---|
| 1370 | i = ibase |
---|
| 1371 | j = jbase |
---|
| 1372 | !DIR$ IVDEP |
---|
| 1373 | !CDIR NODEP |
---|
| 1374 | !OCL NOVREC |
---|
| 1375 | DO ijk = 1, lot |
---|
| 1376 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1377 | d(ja+j) = b(ia+i) - b(ib+i) |
---|
| 1378 | c(jb+j) = c1*(a(ia+i)-a(ib+i)) - s1*(b(ia+i)+b(ib+i)) |
---|
| 1379 | d(jb+j) = s1*(a(ia+i)-a(ib+i)) + c1*(b(ia+i)+b(ib+i)) |
---|
| 1380 | i = i + inc3 |
---|
| 1381 | j = j + inc4 |
---|
| 1382 | END DO |
---|
| 1383 | ibase = ibase + inc1 |
---|
| 1384 | jbase = jbase + inc2 |
---|
| 1385 | END DO |
---|
| 1386 | ia = ia + iink |
---|
| 1387 | ib = ib - iink |
---|
| 1388 | jbase = jbase + jump |
---|
| 1389 | END DO |
---|
| 1390 | IF (ia>ib) GO TO 170 |
---|
| 1391 | 20 CONTINUE |
---|
| 1392 | ibase = 0 |
---|
| 1393 | DO l = 1, la |
---|
| 1394 | i = ibase |
---|
| 1395 | j = jbase |
---|
| 1396 | !DIR$ IVDEP |
---|
| 1397 | !CDIR NODEP |
---|
| 1398 | !OCL NOVREC |
---|
| 1399 | DO ijk = 1, lot |
---|
| 1400 | c(ja+j) = a(ia+i) |
---|
| 1401 | c(jb+j) = -b(ia+i) |
---|
| 1402 | i = i + inc3 |
---|
| 1403 | j = j + inc4 |
---|
| 1404 | END DO |
---|
| 1405 | ibase = ibase + inc1 |
---|
| 1406 | jbase = jbase + inc2 |
---|
| 1407 | END DO |
---|
| 1408 | |
---|
| 1409 | GO TO 170 |
---|
| 1410 | 30 CONTINUE |
---|
| 1411 | DO l = 1, la |
---|
| 1412 | i = ibase |
---|
| 1413 | j = jbase |
---|
| 1414 | !DIR$ IVDEP |
---|
| 1415 | !CDIR NODEP |
---|
| 1416 | !OCL NOVREC |
---|
| 1417 | DO ijk = 1, lot |
---|
| 1418 | c(ja+j) = 2.0*(a(ia+i)+a(ib+i)) |
---|
| 1419 | c(jb+j) = 2.0*(a(ia+i)-a(ib+i)) |
---|
| 1420 | i = i + inc3 |
---|
| 1421 | j = j + inc4 |
---|
| 1422 | END DO |
---|
| 1423 | ibase = ibase + inc1 |
---|
| 1424 | jbase = jbase + inc2 |
---|
| 1425 | END DO |
---|
| 1426 | GO TO 170 |
---|
| 1427 | |
---|
| 1428 | ! Coding for factor 3 |
---|
| 1429 | |
---|
| 1430 | 40 CONTINUE |
---|
| 1431 | ia = 1 |
---|
| 1432 | ib = ia + (2*m-la)*inc1 |
---|
| 1433 | ic = ib |
---|
| 1434 | ja = 1 |
---|
| 1435 | jb = ja + jink |
---|
| 1436 | jc = jb + jink |
---|
| 1437 | |
---|
| 1438 | IF (la==m) GO TO 60 |
---|
| 1439 | |
---|
| 1440 | DO l = 1, la |
---|
| 1441 | i = ibase |
---|
| 1442 | j = jbase |
---|
| 1443 | !DIR$ IVDEP |
---|
| 1444 | !CDIR NODEP |
---|
| 1445 | !OCL NOVREC |
---|
| 1446 | DO ijk = 1, lot |
---|
| 1447 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1448 | c(jb+j) = (a(ia+i)-0.5*a(ib+i)) - (sin60*(b(ib+i))) |
---|
| 1449 | c(jc+j) = (a(ia+i)-0.5*a(ib+i)) + (sin60*(b(ib+i))) |
---|
| 1450 | i = i + inc3 |
---|
| 1451 | j = j + inc4 |
---|
| 1452 | END DO |
---|
| 1453 | ibase = ibase + inc1 |
---|
| 1454 | jbase = jbase + inc2 |
---|
| 1455 | END DO |
---|
| 1456 | ia = ia + iink |
---|
| 1457 | iink = 2*iink |
---|
| 1458 | ib = ib + iink |
---|
| 1459 | ic = ic - iink |
---|
| 1460 | jbase = jbase + jump |
---|
| 1461 | jump = 2*jump + jink |
---|
| 1462 | IF (ia==ic) GO TO 50 |
---|
| 1463 | DO k = la, kstop, la |
---|
| 1464 | kb = k + k |
---|
| 1465 | kc = kb + kb |
---|
| 1466 | c1 = trigs(kb+1) |
---|
| 1467 | s1 = trigs(kb+2) |
---|
| 1468 | c2 = trigs(kc+1) |
---|
| 1469 | s2 = trigs(kc+2) |
---|
| 1470 | ibase = 0 |
---|
| 1471 | DO l = 1, la |
---|
| 1472 | i = ibase |
---|
| 1473 | j = jbase |
---|
| 1474 | !DIR$ IVDEP |
---|
| 1475 | !CDIR NODEP |
---|
| 1476 | !OCL NOVREC |
---|
| 1477 | DO ijk = 1, lot |
---|
| 1478 | c(ja+j) = a(ia+i) + (a(ib+i)+a(ic+i)) |
---|
| 1479 | d(ja+j) = b(ia+i) + (b(ib+i)-b(ic+i)) |
---|
| 1480 | c(jb+j) = c1*((a(ia+i)-0.5*(a(ib+i)+a(ic+i)))-(sin60*(b(ib+i)+ & |
---|
| 1481 | & b(ic+i)))) - s1*((b(ia+i)-0.5*(b(ib+i)-b(ic+i)))+(sin60*(a(ib+i)- & |
---|
| 1482 | & a(ic+i)))) |
---|
| 1483 | d(jb+j) = s1*((a(ia+i)-0.5*(a(ib+i)+a(ic+i)))-(sin60*(b(ib+i)+ & |
---|
| 1484 | & b(ic+i)))) + c1*((b(ia+i)-0.5*(b(ib+i)-b(ic+i)))+(sin60*(a(ib+i)- & |
---|
| 1485 | & a(ic+i)))) |
---|
| 1486 | c(jc+j) = c2*((a(ia+i)-0.5*(a(ib+i)+a(ic+i)))+(sin60*(b(ib+i)+ & |
---|
| 1487 | & b(ic+i)))) - s2*((b(ia+i)-0.5*(b(ib+i)-b(ic+i)))-(sin60*(a(ib+i)- & |
---|
| 1488 | & a(ic+i)))) |
---|
| 1489 | d(jc+j) = s2*((a(ia+i)-0.5*(a(ib+i)+a(ic+i)))+(sin60*(b(ib+i)+ & |
---|
| 1490 | & b(ic+i)))) + c2*((b(ia+i)-0.5*(b(ib+i)-b(ic+i)))-(sin60*(a(ib+i)- & |
---|
| 1491 | & a(ic+i)))) |
---|
| 1492 | i = i + inc3 |
---|
| 1493 | j = j + inc4 |
---|
| 1494 | END DO |
---|
| 1495 | ibase = ibase + inc1 |
---|
| 1496 | jbase = jbase + inc2 |
---|
| 1497 | END DO |
---|
| 1498 | ia = ia + iink |
---|
| 1499 | ib = ib + iink |
---|
| 1500 | ic = ic - iink |
---|
| 1501 | jbase = jbase + jump |
---|
| 1502 | END DO |
---|
| 1503 | IF (ia>ic) GO TO 170 |
---|
| 1504 | 50 CONTINUE |
---|
| 1505 | ibase = 0 |
---|
| 1506 | DO l = 1, la |
---|
| 1507 | i = ibase |
---|
| 1508 | j = jbase |
---|
| 1509 | !DIR$ IVDEP |
---|
| 1510 | !CDIR NODEP |
---|
| 1511 | !OCL NOVREC |
---|
| 1512 | DO ijk = 1, lot |
---|
| 1513 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1514 | c(jb+j) = (0.5*a(ia+i)-a(ib+i)) - (sin60*b(ia+i)) |
---|
| 1515 | c(jc+j) = -(0.5*a(ia+i)-a(ib+i)) - (sin60*b(ia+i)) |
---|
| 1516 | i = i + inc3 |
---|
| 1517 | j = j + inc4 |
---|
| 1518 | END DO |
---|
| 1519 | ibase = ibase + inc1 |
---|
| 1520 | jbase = jbase + inc2 |
---|
| 1521 | END DO |
---|
| 1522 | |
---|
| 1523 | GO TO 170 |
---|
| 1524 | 60 CONTINUE |
---|
| 1525 | ssin60 = 2.0*sin60 |
---|
| 1526 | DO l = 1, la |
---|
| 1527 | i = ibase |
---|
| 1528 | j = jbase |
---|
| 1529 | !DIR$ IVDEP |
---|
| 1530 | !CDIR NODEP |
---|
| 1531 | !OCL NOVREC |
---|
| 1532 | DO ijk = 1, lot |
---|
| 1533 | c(ja+j) = 2.0*(a(ia+i)+a(ib+i)) |
---|
| 1534 | c(jb+j) = (2.0*a(ia+i)-a(ib+i)) - (ssin60*b(ib+i)) |
---|
| 1535 | c(jc+j) = (2.0*a(ia+i)-a(ib+i)) + (ssin60*b(ib+i)) |
---|
| 1536 | i = i + inc3 |
---|
| 1537 | j = j + inc4 |
---|
| 1538 | END DO |
---|
| 1539 | ibase = ibase + inc1 |
---|
| 1540 | jbase = jbase + inc2 |
---|
| 1541 | END DO |
---|
| 1542 | GO TO 170 |
---|
| 1543 | |
---|
| 1544 | ! Coding for factor 4 |
---|
| 1545 | |
---|
| 1546 | 70 CONTINUE |
---|
| 1547 | ia = 1 |
---|
| 1548 | ib = ia + (2*m-la)*inc1 |
---|
| 1549 | ic = ib + 2*m*inc1 |
---|
| 1550 | id = ib |
---|
| 1551 | ja = 1 |
---|
| 1552 | jb = ja + jink |
---|
| 1553 | jc = jb + jink |
---|
| 1554 | jd = jc + jink |
---|
| 1555 | |
---|
| 1556 | IF (la==m) GO TO 90 |
---|
| 1557 | |
---|
| 1558 | DO l = 1, la |
---|
| 1559 | i = ibase |
---|
| 1560 | j = jbase |
---|
| 1561 | !DIR$ IVDEP |
---|
| 1562 | !CDIR NODEP |
---|
| 1563 | !OCL NOVREC |
---|
| 1564 | DO ijk = 1, lot |
---|
| 1565 | c(ja+j) = (a(ia+i)+a(ic+i)) + a(ib+i) |
---|
| 1566 | c(jb+j) = (a(ia+i)-a(ic+i)) - b(ib+i) |
---|
| 1567 | c(jc+j) = (a(ia+i)+a(ic+i)) - a(ib+i) |
---|
| 1568 | c(jd+j) = (a(ia+i)-a(ic+i)) + b(ib+i) |
---|
| 1569 | i = i + inc3 |
---|
| 1570 | j = j + inc4 |
---|
| 1571 | END DO |
---|
| 1572 | ibase = ibase + inc1 |
---|
| 1573 | jbase = jbase + inc2 |
---|
| 1574 | END DO |
---|
| 1575 | ia = ia + iink |
---|
| 1576 | iink = 2*iink |
---|
| 1577 | ib = ib + iink |
---|
| 1578 | ic = ic - iink |
---|
| 1579 | id = id - iink |
---|
| 1580 | jbase = jbase + jump |
---|
| 1581 | jump = 2*jump + jink |
---|
| 1582 | IF (ib==ic) GO TO 80 |
---|
| 1583 | DO k = la, kstop, la |
---|
| 1584 | kb = k + k |
---|
| 1585 | kc = kb + kb |
---|
| 1586 | kd = kc + kb |
---|
| 1587 | c1 = trigs(kb+1) |
---|
| 1588 | s1 = trigs(kb+2) |
---|
| 1589 | c2 = trigs(kc+1) |
---|
| 1590 | s2 = trigs(kc+2) |
---|
| 1591 | c3 = trigs(kd+1) |
---|
| 1592 | s3 = trigs(kd+2) |
---|
| 1593 | ibase = 0 |
---|
| 1594 | DO l = 1, la |
---|
| 1595 | i = ibase |
---|
| 1596 | j = jbase |
---|
| 1597 | !DIR$ IVDEP |
---|
| 1598 | !CDIR NODEP |
---|
| 1599 | !OCL NOVREC |
---|
| 1600 | DO ijk = 1, lot |
---|
| 1601 | c(ja+j) = (a(ia+i)+a(ic+i)) + (a(ib+i)+a(id+i)) |
---|
| 1602 | d(ja+j) = (b(ia+i)-b(ic+i)) + (b(ib+i)-b(id+i)) |
---|
| 1603 | c(jc+j) = c2*((a(ia+i)+a(ic+i))-(a(ib+i)+a(id+i))) - s2*((b(ia+ & |
---|
| 1604 | & i)-b(ic+i))-(b(ib+i)-b(id+i))) |
---|
| 1605 | d(jc+j) = s2*((a(ia+i)+a(ic+i))-(a(ib+i)+a(id+i))) + c2*((b(ia+ & |
---|
| 1606 | & i)-b(ic+i))-(b(ib+i)-b(id+i))) |
---|
| 1607 | c(jb+j) = c1*((a(ia+i)-a(ic+i))-(b(ib+i)+b(id+i))) - s1*((b(ia+ & |
---|
| 1608 | & i)+b(ic+i))+(a(ib+i)-a(id+i))) |
---|
| 1609 | d(jb+j) = s1*((a(ia+i)-a(ic+i))-(b(ib+i)+b(id+i))) + c1*((b(ia+ & |
---|
| 1610 | & i)+b(ic+i))+(a(ib+i)-a(id+i))) |
---|
| 1611 | c(jd+j) = c3*((a(ia+i)-a(ic+i))+(b(ib+i)+b(id+i))) - s3*((b(ia+ & |
---|
| 1612 | & i)+b(ic+i))-(a(ib+i)-a(id+i))) |
---|
| 1613 | d(jd+j) = s3*((a(ia+i)-a(ic+i))+(b(ib+i)+b(id+i))) + c3*((b(ia+ & |
---|
| 1614 | & i)+b(ic+i))-(a(ib+i)-a(id+i))) |
---|
| 1615 | i = i + inc3 |
---|
| 1616 | j = j + inc4 |
---|
| 1617 | END DO |
---|
| 1618 | ibase = ibase + inc1 |
---|
| 1619 | jbase = jbase + inc2 |
---|
| 1620 | END DO |
---|
| 1621 | ia = ia + iink |
---|
| 1622 | ib = ib + iink |
---|
| 1623 | ic = ic - iink |
---|
| 1624 | id = id - iink |
---|
| 1625 | jbase = jbase + jump |
---|
| 1626 | END DO |
---|
| 1627 | IF (ib>ic) GO TO 170 |
---|
| 1628 | 80 CONTINUE |
---|
| 1629 | ibase = 0 |
---|
| 1630 | sin45 = SQRT(0.5) |
---|
| 1631 | DO l = 1, la |
---|
| 1632 | i = ibase |
---|
| 1633 | j = jbase |
---|
| 1634 | !DIR$ IVDEP |
---|
| 1635 | !CDIR NODEP |
---|
| 1636 | !OCL NOVREC |
---|
| 1637 | DO ijk = 1, lot |
---|
| 1638 | c(ja+j) = a(ia+i) + a(ib+i) |
---|
| 1639 | c(jb+j) = sin45*((a(ia+i)-a(ib+i))-(b(ia+i)+b(ib+i))) |
---|
| 1640 | c(jc+j) = b(ib+i) - b(ia+i) |
---|
| 1641 | c(jd+j) = -sin45*((a(ia+i)-a(ib+i))+(b(ia+i)+b(ib+i))) |
---|
| 1642 | i = i + inc3 |
---|
| 1643 | j = j + inc4 |
---|
| 1644 | END DO |
---|
| 1645 | ibase = ibase + inc1 |
---|
| 1646 | jbase = jbase + inc2 |
---|
| 1647 | END DO |
---|
| 1648 | |
---|
| 1649 | GO TO 170 |
---|
| 1650 | 90 CONTINUE |
---|
| 1651 | DO l = 1, la |
---|
| 1652 | i = ibase |
---|
| 1653 | j = jbase |
---|
| 1654 | !DIR$ IVDEP |
---|
| 1655 | !CDIR NODEP |
---|
| 1656 | !OCL NOVREC |
---|
| 1657 | DO ijk = 1, lot |
---|
| 1658 | c(ja+j) = 2.0*((a(ia+i)+a(ic+i))+a(ib+i)) |
---|
| 1659 | c(jb+j) = 2.0*((a(ia+i)-a(ic+i))-b(ib+i)) |
---|
| 1660 | c(jc+j) = 2.0*((a(ia+i)+a(ic+i))-a(ib+i)) |
---|
| 1661 | c(jd+j) = 2.0*((a(ia+i)-a(ic+i))+b(ib+i)) |
---|
| 1662 | i = i + inc3 |
---|
| 1663 | j = j + inc4 |
---|
| 1664 | END DO |
---|
| 1665 | ibase = ibase + inc1 |
---|
| 1666 | jbase = jbase + inc2 |
---|
| 1667 | END DO |
---|
| 1668 | |
---|
| 1669 | ! Coding for factor 5 |
---|
| 1670 | |
---|
| 1671 | GO TO 170 |
---|
| 1672 | 100 CONTINUE |
---|
| 1673 | ia = 1 |
---|
| 1674 | ib = ia + (2*m-la)*inc1 |
---|
| 1675 | ic = ib + 2*m*inc1 |
---|
| 1676 | id = ic |
---|
| 1677 | ie = ib |
---|
| 1678 | ja = 1 |
---|
| 1679 | jb = ja + jink |
---|
| 1680 | jc = jb + jink |
---|
| 1681 | jd = jc + jink |
---|
| 1682 | je = jd + jink |
---|
| 1683 | |
---|
| 1684 | IF (la==m) GO TO 120 |
---|
| 1685 | |
---|
| 1686 | DO l = 1, la |
---|
| 1687 | i = ibase |
---|
| 1688 | j = jbase |
---|
| 1689 | !DIR$ IVDEP |
---|
| 1690 | !CDIR NODEP |
---|
| 1691 | !OCL NOVREC |
---|
| 1692 | DO ijk = 1, lot |
---|
| 1693 | c(ja+j) = a(ia+i) + (a(ib+i)+a(ic+i)) |
---|
| 1694 | c(jb+j) = ((a(ia+i)-0.25*(a(ib+i)+a(ic+i)))+qrt5*(a(ib+i)-a(ic+i))) - & |
---|
| 1695 | & (sin72*b(ib+i)+sin36*b(ic+i)) |
---|
| 1696 | c(jc+j) = ((a(ia+i)-0.25*(a(ib+i)+a(ic+i)))-qrt5*(a(ib+i)-a(ic+i))) - & |
---|
| 1697 | & (sin36*b(ib+i)-sin72*b(ic+i)) |
---|
| 1698 | c(jd+j) = ((a(ia+i)-0.25*(a(ib+i)+a(ic+i)))-qrt5*(a(ib+i)-a(ic+i))) + & |
---|
| 1699 | & (sin36*b(ib+i)-sin72*b(ic+i)) |
---|
| 1700 | c(je+j) = ((a(ia+i)-0.25*(a(ib+i)+a(ic+i)))+qrt5*(a(ib+i)-a(ic+i))) + & |
---|
| 1701 | & (sin72*b(ib+i)+sin36*b(ic+i)) |
---|
| 1702 | i = i + inc3 |
---|
| 1703 | j = j + inc4 |
---|
| 1704 | END DO |
---|
| 1705 | ibase = ibase + inc1 |
---|
| 1706 | jbase = jbase + inc2 |
---|
| 1707 | END DO |
---|
| 1708 | ia = ia + iink |
---|
| 1709 | iink = 2*iink |
---|
| 1710 | ib = ib + iink |
---|
| 1711 | ic = ic + iink |
---|
| 1712 | id = id - iink |
---|
| 1713 | ie = ie - iink |
---|
| 1714 | jbase = jbase + jump |
---|
| 1715 | jump = 2*jump + jink |
---|
| 1716 | IF (ib==id) GO TO 110 |
---|
| 1717 | DO k = la, kstop, la |
---|
| 1718 | kb = k + k |
---|
| 1719 | kc = kb + kb |
---|
| 1720 | kd = kc + kb |
---|
| 1721 | ke = kd + kb |
---|
| 1722 | c1 = trigs(kb+1) |
---|
| 1723 | s1 = trigs(kb+2) |
---|
| 1724 | c2 = trigs(kc+1) |
---|
| 1725 | s2 = trigs(kc+2) |
---|
| 1726 | c3 = trigs(kd+1) |
---|
| 1727 | s3 = trigs(kd+2) |
---|
| 1728 | c4 = trigs(ke+1) |
---|
| 1729 | s4 = trigs(ke+2) |
---|
| 1730 | ibase = 0 |
---|
| 1731 | DO l = 1, la |
---|
| 1732 | i = ibase |
---|
| 1733 | j = jbase |
---|
| 1734 | !DIR$ IVDEP |
---|
| 1735 | !CDIR NODEP |
---|
| 1736 | !OCL NOVREC |
---|
| 1737 | DO ijk = 1, lot |
---|
| 1738 | |
---|
| 1739 | a10(ijk) = (a(ia+i)-0.25*((a(ib+i)+a(ie+i))+(a(ic+i)+a(id+i)))) + & |
---|
| 1740 | & qrt5*((a(ib+i)+a(ie+i))-(a(ic+i)+a(id+i))) |
---|
| 1741 | a20(ijk) = (a(ia+i)-0.25*((a(ib+i)+a(ie+i))+(a(ic+i)+a(id+i)))) - & |
---|
| 1742 | & qrt5*((a(ib+i)+a(ie+i))-(a(ic+i)+a(id+i))) |
---|
| 1743 | b10(ijk) = (b(ia+i)-0.25*((b(ib+i)-b(ie+i))+(b(ic+i)-b(id+i)))) + & |
---|
| 1744 | & qrt5*((b(ib+i)-b(ie+i))-(b(ic+i)-b(id+i))) |
---|
| 1745 | b20(ijk) = (b(ia+i)-0.25*((b(ib+i)-b(ie+i))+(b(ic+i)-b(id+i)))) - & |
---|
| 1746 | & qrt5*((b(ib+i)-b(ie+i))-(b(ic+i)-b(id+i))) |
---|
| 1747 | a11(ijk) = sin72*(b(ib+i)+b(ie+i)) + sin36*(b(ic+i)+b(id+i)) |
---|
| 1748 | a21(ijk) = sin36*(b(ib+i)+b(ie+i)) - sin72*(b(ic+i)+b(id+i)) |
---|
| 1749 | b11(ijk) = sin72*(a(ib+i)-a(ie+i)) + sin36*(a(ic+i)-a(id+i)) |
---|
| 1750 | b21(ijk) = sin36*(a(ib+i)-a(ie+i)) - sin72*(a(ic+i)-a(id+i)) |
---|
| 1751 | |
---|
| 1752 | c(ja+j) = a(ia+i) + ((a(ib+i)+a(ie+i))+(a(ic+i)+a(id+i))) |
---|
| 1753 | d(ja+j) = b(ia+i) + ((b(ib+i)-b(ie+i))+(b(ic+i)-b(id+i))) |
---|
| 1754 | c(jb+j) = c1*(a10(ijk)-a11(ijk)) - s1*(b10(ijk)+b11(ijk)) |
---|
| 1755 | d(jb+j) = s1*(a10(ijk)-a11(ijk)) + c1*(b10(ijk)+b11(ijk)) |
---|
| 1756 | c(je+j) = c4*(a10(ijk)+a11(ijk)) - s4*(b10(ijk)-b11(ijk)) |
---|
| 1757 | d(je+j) = s4*(a10(ijk)+a11(ijk)) + c4*(b10(ijk)-b11(ijk)) |
---|
| 1758 | c(jc+j) = c2*(a20(ijk)-a21(ijk)) - s2*(b20(ijk)+b21(ijk)) |
---|
| 1759 | d(jc+j) = s2*(a20(ijk)-a21(ijk)) + c2*(b20(ijk)+b21(ijk)) |
---|
| 1760 | c(jd+j) = c3*(a20(ijk)+a21(ijk)) - s3*(b20(ijk)-b21(ijk)) |
---|
| 1761 | d(jd+j) = s3*(a20(ijk)+a21(ijk)) + c3*(b20(ijk)-b21(ijk)) |
---|
| 1762 | |
---|
| 1763 | i = i + inc3 |
---|
| 1764 | j = j + inc4 |
---|
| 1765 | END DO |
---|
| 1766 | ibase = ibase + inc1 |
---|
| 1767 | jbase = jbase + inc2 |
---|
| 1768 | END DO |
---|
| 1769 | ia = ia + iink |
---|
| 1770 | ib = ib + iink |
---|
| 1771 | ic = ic + iink |
---|
| 1772 | id = id - iink |
---|
| 1773 | ie = ie - iink |
---|
| 1774 | jbase = jbase + jump |
---|
| 1775 | END DO |
---|
| 1776 | IF (ib>id) GO TO 170 |
---|
| 1777 | 110 CONTINUE |
---|
| 1778 | ibase = 0 |
---|
| 1779 | DO l = 1, la |
---|
| 1780 | i = ibase |
---|
| 1781 | j = jbase |
---|
| 1782 | !DIR$ IVDEP |
---|
| 1783 | !CDIR NODEP |
---|
| 1784 | !OCL NOVREC |
---|
| 1785 | DO ijk = 1, lot |
---|
| 1786 | c(ja+j) = (a(ia+i)+a(ib+i)) + a(ic+i) |
---|
| 1787 | c(jb+j) = (qrt5*(a(ia+i)-a(ib+i))+(0.25*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
| 1788 | & (sin36*b(ia+i)+sin72*b(ib+i)) |
---|
| 1789 | c(je+j) = -(qrt5*(a(ia+i)-a(ib+i))+(0.25*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
| 1790 | & (sin36*b(ia+i)+sin72*b(ib+i)) |
---|
| 1791 | c(jc+j) = (qrt5*(a(ia+i)-a(ib+i))-(0.25*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
| 1792 | & (sin72*b(ia+i)-sin36*b(ib+i)) |
---|
| 1793 | c(jd+j) = -(qrt5*(a(ia+i)-a(ib+i))-(0.25*(a(ia+i)+a(ib+i))-a(ic+i))) - & |
---|
| 1794 | & (sin72*b(ia+i)-sin36*b(ib+i)) |
---|
| 1795 | i = i + inc3 |
---|
| 1796 | j = j + inc4 |
---|
| 1797 | END DO |
---|
| 1798 | ibase = ibase + inc1 |
---|
| 1799 | jbase = jbase + inc2 |
---|
| 1800 | END DO |
---|
| 1801 | |
---|
| 1802 | GO TO 170 |
---|
| 1803 | 120 CONTINUE |
---|
[1320] | 1804 | qqrt5 = 2.0_wp*qrt5 |
---|
| 1805 | ssin36 = 2.0_wp*sin36 |
---|
| 1806 | ssin72 = 2.0_wp*sin72 |
---|
[1] | 1807 | DO l = 1, la |
---|
| 1808 | i = ibase |
---|
| 1809 | j = jbase |
---|
| 1810 | !DIR$ IVDEP |
---|
| 1811 | !CDIR NODEP |
---|
| 1812 | !OCL NOVREC |
---|
| 1813 | DO ijk = 1, lot |
---|
| 1814 | c(ja+j) = 2.0*(a(ia+i)+(a(ib+i)+a(ic+i))) |
---|
| 1815 | c(jb+j) = (2.0*(a(ia+i)-0.25*(a(ib+i)+a(ic+i)))+qqrt5*(a(ib+i)-a(ic+ & |
---|
| 1816 | & i))) - (ssin72*b(ib+i)+ssin36*b(ic+i)) |
---|
| 1817 | c(jc+j) = (2.0*(a(ia+i)-0.25*(a(ib+i)+a(ic+i)))-qqrt5*(a(ib+i)-a(ic+ & |
---|
| 1818 | & i))) - (ssin36*b(ib+i)-ssin72*b(ic+i)) |
---|
| 1819 | c(jd+j) = (2.0*(a(ia+i)-0.25*(a(ib+i)+a(ic+i)))-qqrt5*(a(ib+i)-a(ic+ & |
---|
| 1820 | & i))) + (ssin36*b(ib+i)-ssin72*b(ic+i)) |
---|
| 1821 | c(je+j) = (2.0*(a(ia+i)-0.25*(a(ib+i)+a(ic+i)))+qqrt5*(a(ib+i)-a(ic+ & |
---|
| 1822 | & i))) + (ssin72*b(ib+i)+ssin36*b(ic+i)) |
---|
| 1823 | i = i + inc3 |
---|
| 1824 | j = j + inc4 |
---|
| 1825 | END DO |
---|
| 1826 | ibase = ibase + inc1 |
---|
| 1827 | jbase = jbase + inc2 |
---|
| 1828 | END DO |
---|
| 1829 | GO TO 170 |
---|
| 1830 | |
---|
| 1831 | ! Coding for factor 6 |
---|
| 1832 | |
---|
| 1833 | 130 CONTINUE |
---|
| 1834 | ia = 1 |
---|
| 1835 | ib = ia + (2*m-la)*inc1 |
---|
| 1836 | ic = ib + 2*m*inc1 |
---|
| 1837 | id = ic + 2*m*inc1 |
---|
| 1838 | ie = ic |
---|
| 1839 | if = ib |
---|
| 1840 | ja = 1 |
---|
| 1841 | jb = ja + jink |
---|
| 1842 | jc = jb + jink |
---|
| 1843 | jd = jc + jink |
---|
| 1844 | je = jd + jink |
---|
| 1845 | jf = je + jink |
---|
| 1846 | |
---|
| 1847 | IF (la==m) GO TO 150 |
---|
| 1848 | |
---|
| 1849 | DO l = 1, la |
---|
| 1850 | i = ibase |
---|
| 1851 | j = jbase |
---|
| 1852 | !DIR$ IVDEP |
---|
| 1853 | !CDIR NODEP |
---|
| 1854 | !OCL NOVREC |
---|
| 1855 | DO ijk = 1, lot |
---|
| 1856 | c(ja+j) = (a(ia+i)+a(id+i)) + (a(ib+i)+a(ic+i)) |
---|
| 1857 | c(jd+j) = (a(ia+i)-a(id+i)) - (a(ib+i)-a(ic+i)) |
---|
| 1858 | c(jb+j) = ((a(ia+i)-a(id+i))+0.5*(a(ib+i)-a(ic+i))) - (sin60*(b(ib+ & |
---|
| 1859 | & i)+b(ic+i))) |
---|
| 1860 | c(jf+j) = ((a(ia+i)-a(id+i))+0.5*(a(ib+i)-a(ic+i))) + (sin60*(b(ib+ & |
---|
| 1861 | & i)+b(ic+i))) |
---|
| 1862 | c(jc+j) = ((a(ia+i)+a(id+i))-0.5*(a(ib+i)+a(ic+i))) - (sin60*(b(ib+ & |
---|
| 1863 | & i)-b(ic+i))) |
---|
| 1864 | c(je+j) = ((a(ia+i)+a(id+i))-0.5*(a(ib+i)+a(ic+i))) + (sin60*(b(ib+ & |
---|
| 1865 | & i)-b(ic+i))) |
---|
| 1866 | i = i + inc3 |
---|
| 1867 | j = j + inc4 |
---|
| 1868 | END DO |
---|
| 1869 | ibase = ibase + inc1 |
---|
| 1870 | jbase = jbase + inc2 |
---|
| 1871 | END DO |
---|
| 1872 | ia = ia + iink |
---|
| 1873 | iink = 2*iink |
---|
| 1874 | ib = ib + iink |
---|
| 1875 | ic = ic + iink |
---|
| 1876 | id = id - iink |
---|
| 1877 | ie = ie - iink |
---|
| 1878 | if = if - iink |
---|
| 1879 | jbase = jbase + jump |
---|
| 1880 | jump = 2*jump + jink |
---|
| 1881 | IF (ic==id) GO TO 140 |
---|
| 1882 | DO k = la, kstop, la |
---|
| 1883 | kb = k + k |
---|
| 1884 | kc = kb + kb |
---|
| 1885 | kd = kc + kb |
---|
| 1886 | ke = kd + kb |
---|
| 1887 | kf = ke + kb |
---|
| 1888 | c1 = trigs(kb+1) |
---|
| 1889 | s1 = trigs(kb+2) |
---|
| 1890 | c2 = trigs(kc+1) |
---|
| 1891 | s2 = trigs(kc+2) |
---|
| 1892 | c3 = trigs(kd+1) |
---|
| 1893 | s3 = trigs(kd+2) |
---|
| 1894 | c4 = trigs(ke+1) |
---|
| 1895 | s4 = trigs(ke+2) |
---|
| 1896 | c5 = trigs(kf+1) |
---|
| 1897 | s5 = trigs(kf+2) |
---|
| 1898 | ibase = 0 |
---|
| 1899 | DO l = 1, la |
---|
| 1900 | i = ibase |
---|
| 1901 | j = jbase |
---|
| 1902 | !DIR$ IVDEP |
---|
| 1903 | !CDIR NODEP |
---|
| 1904 | !OCL NOVREC |
---|
| 1905 | DO ijk = 1, lot |
---|
| 1906 | |
---|
| 1907 | a11(ijk) = (a(ie+i)+a(ib+i)) + (a(ic+i)+a(if+i)) |
---|
| 1908 | a20(ijk) = (a(ia+i)+a(id+i)) - 0.5*a11(ijk) |
---|
| 1909 | a21(ijk) = sin60*((a(ie+i)+a(ib+i))-(a(ic+i)+a(if+i))) |
---|
| 1910 | b11(ijk) = (b(ib+i)-b(ie+i)) + (b(ic+i)-b(if+i)) |
---|
| 1911 | b20(ijk) = (b(ia+i)-b(id+i)) - 0.5*b11(ijk) |
---|
| 1912 | b21(ijk) = sin60*((b(ib+i)-b(ie+i))-(b(ic+i)-b(if+i))) |
---|
| 1913 | |
---|
| 1914 | c(ja+j) = (a(ia+i)+a(id+i)) + a11(ijk) |
---|
| 1915 | d(ja+j) = (b(ia+i)-b(id+i)) + b11(ijk) |
---|
| 1916 | c(jc+j) = c2*(a20(ijk)-b21(ijk)) - s2*(b20(ijk)+a21(ijk)) |
---|
| 1917 | d(jc+j) = s2*(a20(ijk)-b21(ijk)) + c2*(b20(ijk)+a21(ijk)) |
---|
| 1918 | c(je+j) = c4*(a20(ijk)+b21(ijk)) - s4*(b20(ijk)-a21(ijk)) |
---|
| 1919 | d(je+j) = s4*(a20(ijk)+b21(ijk)) + c4*(b20(ijk)-a21(ijk)) |
---|
| 1920 | |
---|
| 1921 | a11(ijk) = (a(ie+i)-a(ib+i)) + (a(ic+i)-a(if+i)) |
---|
| 1922 | b11(ijk) = (b(ie+i)+b(ib+i)) - (b(ic+i)+b(if+i)) |
---|
| 1923 | a20(ijk) = (a(ia+i)-a(id+i)) - 0.5*a11(ijk) |
---|
| 1924 | a21(ijk) = sin60*((a(ie+i)-a(ib+i))-(a(ic+i)-a(if+i))) |
---|
| 1925 | b20(ijk) = (b(ia+i)+b(id+i)) + 0.5*b11(ijk) |
---|
| 1926 | b21(ijk) = sin60*((b(ie+i)+b(ib+i))+(b(ic+i)+b(if+i))) |
---|
| 1927 | |
---|
| 1928 | c(jd+j) = c3*((a(ia+i)-a(id+i))+a11(ijk)) - s3*((b(ia+i)+b(id+ & |
---|
| 1929 | & i))-b11(ijk)) |
---|
| 1930 | d(jd+j) = s3*((a(ia+i)-a(id+i))+a11(ijk)) + c3*((b(ia+i)+b(id+ & |
---|
| 1931 | & i))-b11(ijk)) |
---|
| 1932 | c(jb+j) = c1*(a20(ijk)-b21(ijk)) - s1*(b20(ijk)-a21(ijk)) |
---|
| 1933 | d(jb+j) = s1*(a20(ijk)-b21(ijk)) + c1*(b20(ijk)-a21(ijk)) |
---|
| 1934 | c(jf+j) = c5*(a20(ijk)+b21(ijk)) - s5*(b20(ijk)+a21(ijk)) |
---|
| 1935 | d(jf+j) = s5*(a20(ijk)+b21(ijk)) + c5*(b20(ijk)+a21(ijk)) |
---|
| 1936 | |
---|
| 1937 | i = i + inc3 |
---|
| 1938 | j = j + inc4 |
---|
| 1939 | END DO |
---|
| 1940 | ibase = ibase + inc1 |
---|
| 1941 | jbase = jbase + inc2 |
---|
| 1942 | END DO |
---|
| 1943 | ia = ia + iink |
---|
| 1944 | ib = ib + iink |
---|
| 1945 | ic = ic + iink |
---|
| 1946 | id = id - iink |
---|
| 1947 | ie = ie - iink |
---|
| 1948 | if = if - iink |
---|
| 1949 | jbase = jbase + jump |
---|
| 1950 | END DO |
---|
| 1951 | IF (ic>id) GO TO 170 |
---|
| 1952 | 140 CONTINUE |
---|
| 1953 | ibase = 0 |
---|
| 1954 | DO l = 1, la |
---|
| 1955 | i = ibase |
---|
| 1956 | j = jbase |
---|
| 1957 | !DIR$ IVDEP |
---|
| 1958 | !CDIR NODEP |
---|
| 1959 | !OCL NOVREC |
---|
| 1960 | DO ijk = 1, lot |
---|
| 1961 | c(ja+j) = a(ib+i) + (a(ia+i)+a(ic+i)) |
---|
| 1962 | c(jd+j) = b(ib+i) - (b(ia+i)+b(ic+i)) |
---|
| 1963 | c(jb+j) = (sin60*(a(ia+i)-a(ic+i))) - (0.5*(b(ia+i)+b(ic+i))+b(ib+i)) |
---|
| 1964 | c(jf+j) = -(sin60*(a(ia+i)-a(ic+i))) - (0.5*(b(ia+i)+b(ic+i))+b(ib+i)) |
---|
| 1965 | c(jc+j) = sin60*(b(ic+i)-b(ia+i)) + (0.5*(a(ia+i)+a(ic+i))-a(ib+i)) |
---|
| 1966 | c(je+j) = sin60*(b(ic+i)-b(ia+i)) - (0.5*(a(ia+i)+a(ic+i))-a(ib+i)) |
---|
| 1967 | i = i + inc3 |
---|
| 1968 | j = j + inc4 |
---|
| 1969 | END DO |
---|
| 1970 | ibase = ibase + inc1 |
---|
| 1971 | jbase = jbase + inc2 |
---|
| 1972 | END DO |
---|
| 1973 | |
---|
| 1974 | GO TO 170 |
---|
| 1975 | 150 CONTINUE |
---|
| 1976 | ssin60 = 2.0*sin60 |
---|
| 1977 | DO l = 1, la |
---|
| 1978 | i = ibase |
---|
| 1979 | j = jbase |
---|
| 1980 | !DIR$ IVDEP |
---|
| 1981 | !CDIR NODEP |
---|
| 1982 | !OCL NOVREC |
---|
| 1983 | DO ijk = 1, lot |
---|
| 1984 | c(ja+j) = (2.0*(a(ia+i)+a(id+i))) + (2.0*(a(ib+i)+a(ic+i))) |
---|
| 1985 | c(jd+j) = (2.0*(a(ia+i)-a(id+i))) - (2.0*(a(ib+i)-a(ic+i))) |
---|
| 1986 | c(jb+j) = (2.0*(a(ia+i)-a(id+i))+(a(ib+i)-a(ic+i))) - (ssin60*(b(ib+ & |
---|
| 1987 | & i)+b(ic+i))) |
---|
| 1988 | c(jf+j) = (2.0*(a(ia+i)-a(id+i))+(a(ib+i)-a(ic+i))) + (ssin60*(b(ib+ & |
---|
| 1989 | & i)+b(ic+i))) |
---|
| 1990 | c(jc+j) = (2.0*(a(ia+i)+a(id+i))-(a(ib+i)+a(ic+i))) - (ssin60*(b(ib+ & |
---|
| 1991 | & i)-b(ic+i))) |
---|
| 1992 | c(je+j) = (2.0*(a(ia+i)+a(id+i))-(a(ib+i)+a(ic+i))) + (ssin60*(b(ib+ & |
---|
| 1993 | & i)-b(ic+i))) |
---|
| 1994 | i = i + inc3 |
---|
| 1995 | j = j + inc4 |
---|
| 1996 | END DO |
---|
| 1997 | ibase = ibase + inc1 |
---|
| 1998 | jbase = jbase + inc2 |
---|
| 1999 | END DO |
---|
| 2000 | GO TO 170 |
---|
| 2001 | |
---|
| 2002 | ! Coding for factor 8 |
---|
| 2003 | |
---|
| 2004 | 160 CONTINUE |
---|
| 2005 | ibad = 3 |
---|
| 2006 | IF (la/=m) GO TO 180 |
---|
| 2007 | ia = 1 |
---|
| 2008 | ib = ia + la*inc1 |
---|
| 2009 | ic = ib + 2*la*inc1 |
---|
| 2010 | id = ic + 2*la*inc1 |
---|
| 2011 | ie = id + 2*la*inc1 |
---|
| 2012 | ja = 1 |
---|
| 2013 | jb = ja + jink |
---|
| 2014 | jc = jb + jink |
---|
| 2015 | jd = jc + jink |
---|
| 2016 | je = jd + jink |
---|
| 2017 | jf = je + jink |
---|
| 2018 | jg = jf + jink |
---|
| 2019 | jh = jg + jink |
---|
[1320] | 2020 | ssin45 = SQRT(2.0_wp) |
---|
[1] | 2021 | |
---|
| 2022 | DO l = 1, la |
---|
| 2023 | i = ibase |
---|
| 2024 | j = jbase |
---|
| 2025 | !DIR$ IVDEP |
---|
| 2026 | !CDIR NODEP |
---|
| 2027 | !OCL NOVREC |
---|
| 2028 | DO ijk = 1, lot |
---|
| 2029 | c(ja+j) = 2.0*(((a(ia+i)+a(ie+i))+a(ic+i))+(a(ib+i)+a(id+i))) |
---|
| 2030 | c(je+j) = 2.0*(((a(ia+i)+a(ie+i))+a(ic+i))-(a(ib+i)+a(id+i))) |
---|
| 2031 | c(jc+j) = 2.0*(((a(ia+i)+a(ie+i))-a(ic+i))-(b(ib+i)-b(id+i))) |
---|
| 2032 | c(jg+j) = 2.0*(((a(ia+i)+a(ie+i))-a(ic+i))+(b(ib+i)-b(id+i))) |
---|
| 2033 | c(jb+j) = 2.0*((a(ia+i)-a(ie+i))-b(ic+i)) + ssin45*((a(ib+i)-a(id+ & |
---|
| 2034 | & i))-(b(ib+i)+b(id+i))) |
---|
| 2035 | c(jf+j) = 2.0*((a(ia+i)-a(ie+i))-b(ic+i)) - ssin45*((a(ib+i)-a(id+ & |
---|
| 2036 | & i))-(b(ib+i)+b(id+i))) |
---|
| 2037 | c(jd+j) = 2.0*((a(ia+i)-a(ie+i))+b(ic+i)) - ssin45*((a(ib+i)-a(id+ & |
---|
| 2038 | & i))+(b(ib+i)+b(id+i))) |
---|
| 2039 | c(jh+j) = 2.0*((a(ia+i)-a(ie+i))+b(ic+i)) + ssin45*((a(ib+i)-a(id+ & |
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| 2040 | & i))+(b(ib+i)+b(id+i))) |
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| 2041 | i = i + inc3 |
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| 2042 | j = j + inc4 |
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| 2043 | END DO |
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| 2044 | ibase = ibase + inc1 |
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| 2045 | jbase = jbase + inc2 |
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| 2046 | END DO |
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| 2047 | |
---|
| 2048 | ! Return |
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| 2049 | |
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| 2050 | 170 CONTINUE |
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| 2051 | ibad = 0 |
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| 2052 | 180 CONTINUE |
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| 2053 | ierr = ibad |
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| 2054 | RETURN |
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| 2055 | END SUBROUTINE rpassm |
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| 2056 | |
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| 2057 | SUBROUTINE set99(trigs,ifax,n) |
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| 2058 | |
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| 2059 | ! Description: |
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| 2060 | ! |
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| 2061 | ! Computes factors of n & trigonometric functins required by fft99 & fft991cy |
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| 2062 | ! |
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| 2063 | ! Method: |
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| 2064 | ! |
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| 2065 | ! Dimension trigs(n),ifax(1),jfax(10),lfax(7) |
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| 2066 | ! |
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| 2067 | ! subroutine 'set99' - computes factors of n & trigonometric |
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| 2068 | ! functins required by fft99 & fft991cy |
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| 2069 | |
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| 2070 | |
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[1320] | 2071 | USE control_parameters, & |
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| 2072 | ONLY: message_string |
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[1] | 2073 | |
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[1320] | 2074 | USE kinds |
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| 2075 | |
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[1] | 2076 | IMPLICIT NONE |
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| 2077 | |
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| 2078 | ! Scalar arguments |
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[1320] | 2079 | INTEGER(iwp) :: n !: |
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[1] | 2080 | |
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| 2081 | ! Array arguments |
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[1320] | 2082 | INTEGER(iwp) :: ifax(*) !: |
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| 2083 | REAL(wp) :: trigs(*) !: |
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[1] | 2084 | |
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[1320] | 2085 | |
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[1] | 2086 | ! Local scalars: |
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[1320] | 2087 | REAL(wp) :: angle !: |
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| 2088 | REAL(wp) :: del !: |
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| 2089 | INTEGER(iwp) :: i !: |
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| 2090 | INTEGER(iwp) :: ifac !: |
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| 2091 | INTEGER(iwp) :: ixxx !: |
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| 2092 | INTEGER(iwp) :: k !: |
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| 2093 | INTEGER(iwp) :: l !: |
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| 2094 | INTEGER(iwp) :: nfax !: |
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| 2095 | INTEGER(iwp) :: nhl !: |
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| 2096 | INTEGER(iwp) :: nil !: |
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| 2097 | INTEGER(iwp) :: nu !: |
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[1] | 2098 | |
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| 2099 | ! Local arrays: |
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[1320] | 2100 | INTEGER(iwp) :: jfax(10) !: |
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| 2101 | INTEGER(iwp) :: lfax(7) !: |
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[1] | 2102 | |
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| 2103 | ! Intrinsic functions |
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[1320] | 2104 | ! INTRINSIC ASIN, COS, MOD, REAL, SIN |
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[1] | 2105 | |
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| 2106 | ! Data statements |
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| 2107 | DATA lfax/6, 8, 5, 4, 3, 2, 1/ |
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| 2108 | |
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| 2109 | |
---|
| 2110 | ! Executable statements |
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| 2111 | ixxx = 1 |
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| 2112 | |
---|
[1320] | 2113 | del = 4.0_wp*ASIN(1.0_wp)/REAL(n) |
---|
[1] | 2114 | nil = 0 |
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| 2115 | nhl = (n/2) - 1 |
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| 2116 | DO k = nil, nhl |
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| 2117 | angle = REAL(k)*del |
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| 2118 | trigs(2*k+1) = COS(angle) |
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| 2119 | trigs(2*k+2) = SIN(angle) |
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| 2120 | END DO |
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| 2121 | |
---|
| 2122 | ! Find factors of n (8,6,5,4,3,2; only one 8 allowed) |
---|
| 2123 | ! Look for sixes first, store factors in descending order |
---|
| 2124 | nu = n |
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| 2125 | ifac = 6 |
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| 2126 | k = 0 |
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| 2127 | l = 1 |
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| 2128 | 10 CONTINUE |
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| 2129 | IF (MOD(nu,ifac)/=0) GO TO 30 |
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| 2130 | k = k + 1 |
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| 2131 | jfax(k) = ifac |
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| 2132 | IF (ifac/=8) GO TO 20 |
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| 2133 | IF (k==1) GO TO 20 |
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| 2134 | jfax(1) = 8 |
---|
| 2135 | jfax(k) = 6 |
---|
| 2136 | 20 CONTINUE |
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| 2137 | nu = nu/ifac |
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| 2138 | IF (nu==1) GO TO 40 |
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| 2139 | IF (ifac/=8) GO TO 10 |
---|
| 2140 | 30 CONTINUE |
---|
| 2141 | l = l + 1 |
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| 2142 | ifac = lfax(l) |
---|
| 2143 | IF (ifac>1) GO TO 10 |
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| 2144 | |
---|
| 2145 | ! WRITE (nout,'(A,I4,A)') ' n =',n,' - Contains illegal factors' |
---|
[258] | 2146 | message_string = 'number of gridpoints along x or/and y ' // & |
---|
| 2147 | 'contain illegal factors' // & |
---|
| 2148 | '&only factors 8,6,5,4,3,2 are allowed' |
---|
| 2149 | CALL message( 'temperton_fft', 'PA0311', 1, 2, 0, 6, 0 ) |
---|
[1] | 2150 | |
---|
| 2151 | RETURN |
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| 2152 | |
---|
| 2153 | ! Now reverse order of factors |
---|
| 2154 | 40 CONTINUE |
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| 2155 | nfax = k |
---|
| 2156 | ifax(1) = nfax |
---|
| 2157 | DO i = 1, nfax |
---|
| 2158 | ifax(nfax+2-i) = jfax(i) |
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| 2159 | END DO |
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| 2160 | ifax(10) = n |
---|
| 2161 | RETURN |
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| 2162 | END SUBROUTINE set99 |
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| 2163 | |
---|
| 2164 | END MODULE temperton_fft |
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