source: palm/trunk/SOURCE/local_getenv.f90 @ 1321

Last change on this file since 1321 was 1321, checked in by raasch, 8 years ago

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1 SUBROUTINE local_getenv( var, ivar, value, ivalue )
2
3!--------------------------------------------------------------------------------!
4! This file is part of PALM.
5!
6! PALM is free software: you can redistribute it and/or modify it under the terms
7! of the GNU General Public License as published by the Free Software Foundation,
8! either version 3 of the License, or (at your option) any later version.
9!
10! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
13!
14! You should have received a copy of the GNU General Public License along with
15! PALM. If not, see <http://www.gnu.org/licenses/>.
16!
17! Copyright 1997-2014 Leibniz Universitaet Hannover
18!--------------------------------------------------------------------------------!
19!
20! Current revisions:
21! -----------------
22!
23! Former revisions:
24! -----------------
25! $Id: local_getenv.f90 1321 2014-03-20 09:40:40Z raasch $
26!
27! 1320 2014-03-20 08:40:49Z raasch $
28! ONLY-attribute added to USE-statements,
29! kind-parameters added to all INTEGER and REAL declaration statements,
30! kinds are defined in new module kinds,
31! revision history before 2012 removed,
32! comment fields (!:) to be used for variable explanations added to
33! all variable declaration statements
34!
35! 1036 2012-10-22 13:43:42Z raasch
36! code put under GPL (PALM 3.9)
37!
38! Revision 1.1  1997/08/11 06:21:01  raasch
39! Initial revision
40!
41!
42! Description:
43! ------------
44! Getting the values of environment-variabls (for different operating-systems)
45!------------------------------------------------------------------------------!
46
47    USE kinds
48       
49#if defined( __lcmuk )
50    USE pegrid
51#endif
52    CHARACTER (LEN=*) ::  value  !:
53    CHARACTER (LEN=*) ::  var    !:
54   
55    INTEGER(iwp)      ::  ivalue !:
56    INTEGER(iwp)      ::  ivar   !:
57#if defined( __lcmuk )
58    INTEGER(iwp)      ::  i      !:
59    INTEGER(iwp)      ::  ia(20) !:
60#endif
61
62    CALL GETENV( var(1:ivar), value )
63    ivalue = LEN_TRIM( value )
64
65#if defined( __lcmuk )  &&  defined( __parallel )
66    ia = IACHAR( ' ' )
67    IF ( myid == 0 )  THEN
68       DO  i = 1, ivalue
69          ia(i) = IACHAR( value(i:i) )
70       ENDDO
71    ENDIF
72    CALL MPI_BCAST( ia(1), 20, MPI_INTEGER, 0, comm2d, ierr )
73    DO  i = 1, 20
74       IF ( ACHAR( ia(i) ) /= ' ' )  value(i:i) = ACHAR( ia(i) )
75    ENDDO
76    ivalue = LEN_TRIM( value )
77#endif
78 END SUBROUTINE local_getenv   
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