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setsd.f
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1996-09-28
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SUBROUTINE setsd(iseed1,iseed2)
C**********************************************************************
C
C SUBROUTINE SETSD(ISEED1,ISEED2)
C SET S-ee-D of current generator
C
C Resets the initial seed of the current generator to ISEED1 and
C ISEED2. The seeds of the other generators remain unchanged.
C
C This is a transcription from Pascal to Fortran of routine
C Set_Seed from the paper
C
C L'Ecuyer, P. and Cote, S. "Implementing a Random Number Package
C with Splitting Facilities." ACM Transactions on Mathematical
C Software, 17:98-111 (1991)
C
C
C Arguments
C
C
C ISEED1 -> First integer seed
C INTEGER ISEED1
C
C ISEED2 -> Second integer seed
C INTEGER ISEED1
C
C**********************************************************************
C .. Parameters ..
INTEGER numg
PARAMETER (numg=32)
C ..
C .. Scalar Arguments ..
INTEGER iseed1,iseed2
C ..
C .. Scalars in Common ..
INTEGER a1,a1vw,a1w,a2,a2vw,a2w,m1,m2
C ..
C .. Arrays in Common ..
INTEGER cg1(numg),cg2(numg),ig1(numg),ig2(numg),lg1(numg),
+ lg2(numg)
LOGICAL qanti(numg)
C ..
C .. Local Scalars ..
INTEGER g
C ..
C .. External Functions ..
LOGICAL qrgnin
EXTERNAL qrgnin
C ..
C .. External Subroutines ..
EXTERNAL getcgn,initgn
C ..
C .. Common blocks ..
COMMON /globe/m1,m2,a1,a2,a1w,a2w,a1vw,a2vw,ig1,ig2,lg1,lg2,cg1,
+ cg2,qanti
C ..
C .. Save statement ..
SAVE /globe/
C ..
C .. Executable Statements ..
C Abort unless random number generator initialized
IF (qrgnin()) GO TO 10
WRITE (*,*) ' SETSD called before random number generator ',
+ ' initialized -- abort!'
CALL XSTOPX
+ (' SETSD called before random number generator initialized')
10 CALL getcgn(g)
ig1(g) = iseed1
ig2(g) = iseed2
CALL initgn(-1)
RETURN
END