SUBROUTINE getsd(iseed1,iseed2) C********************************************************************** C C SUBROUTINE GETSD(G,ISEED1,ISEED2) C GET SeeD C C Returns the value of two integer seeds of the current generator C C This is a transcription from Pascal to Fortran of routine C Get_State 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 C ISEED1 <- First integer seed of generator G C INTEGER ISEED1 C C ISEED2 <- Second integer seed of generator G 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 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 (*,*) ' GETSD called before random number generator ', + ' initialized -- abort!' STOP ' GETSD called before random number generator initialized' 10 CALL getcgn(g) iseed1 = cg1(g) iseed2 = cg2(g) RETURN END