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Last change
on this file since 1999 was
1999,
checked in by Laurent Fairhead, 10 years ago
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Merged trunk changes r1920:1997 into testing branch
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Property copyright set to
Name of program: LMDZ
Creation date: 1984
Version: LMDZ5
License: CeCILL version 2
Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539
See the license file in the root directory
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Property svn:eol-style set to
native
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Property svn:keywords set to
Author Date Id Revision
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File size:
675 bytes
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| 1 | |
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| 2 | ! $Header$ |
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| 3 | |
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| 4 | SUBROUTINE ran0_vec(npoints, idum, ran0) |
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| 5 | |
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| 6 | ! $Id: ran0_vec.F90 1999 2014-03-20 09:57:19Z fairhead $ |
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| 7 | ! Platform independent random number generator from |
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| 8 | ! Numerical Recipies |
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| 9 | ! Mark Webb July 1999 |
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| 10 | |
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| 11 | IMPLICIT NONE |
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| 12 | |
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| 13 | INTEGER j, npoints, idum(npoints), ia, im, iq, ir, k(npoints) |
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| 14 | REAL ran0(npoints), am |
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| 15 | |
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| 16 | PARAMETER (ia=16807, im=2147483647, am=1.0/im, iq=127773, ir=2836) |
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| 17 | |
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| 18 | ! do j=1,npoints |
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| 19 | ! if (idum(j).eq.0) then |
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| 20 | ! write(6,*) 'idum=',idum |
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| 21 | ! write(6,*) 'ZERO seed not allowed' |
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| 22 | ! stop |
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| 23 | ! endif |
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| 24 | ! enddo |
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| 25 | |
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| 26 | DO j = 1, npoints |
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| 27 | k(j) = idum(j)/iq |
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| 28 | idum(j) = ia*(idum(j)-k(j)*iq) - ir*k(j) |
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| 29 | IF (idum(j)<0) idum(j) = idum(j) + im |
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| 30 | ran0(j) = am*idum(j) |
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| 31 | END DO |
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| 32 | |
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| 33 | END SUBROUTINE ran0_vec |
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| 34 | |
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