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!' STOP ' SETSD called before random number generator initialized' 10 CALL getcgn(g) ig1(g) = iseed1 ig2(g) = iseed2 CALL initgn(-1) RETURN END