2329
|
1 SUBROUTINE getsd(iseed1,iseed2) |
|
2 C********************************************************************** |
|
3 C |
|
4 C SUBROUTINE GETSD(ISEED1,ISEED2) |
|
5 C GET SeeD |
|
6 C |
|
7 C Returns the value of two integer seeds of the current generator |
|
8 C |
|
9 C This is a transcription from Pascal to Fortran of routine |
|
10 C Get_State from the paper |
|
11 C |
|
12 C L'Ecuyer, P. and Cote, S. "Implementing a Random Number Package |
|
13 C with Splitting Facilities." ACM Transactions on Mathematical |
|
14 C Software, 17:98-111 (1991) |
|
15 C |
|
16 C |
|
17 C Arguments |
|
18 C |
|
19 C |
|
20 C |
|
21 C ISEED1 <- First integer seed of generator G |
|
22 C INTEGER ISEED1 |
|
23 C |
|
24 C ISEED2 <- Second integer seed of generator G |
|
25 C INTEGER ISEED1 |
|
26 C |
|
27 C********************************************************************** |
|
28 C .. Parameters .. |
|
29 INTEGER numg |
|
30 PARAMETER (numg=32) |
|
31 C .. |
|
32 C .. Scalar Arguments .. |
|
33 INTEGER iseed1,iseed2 |
|
34 C .. |
|
35 C .. Scalars in Common .. |
|
36 INTEGER a1,a1vw,a1w,a2,a2vw,a2w,m1,m2 |
|
37 C .. |
|
38 C .. Arrays in Common .. |
|
39 INTEGER cg1(numg),cg2(numg),ig1(numg),ig2(numg),lg1(numg), |
|
40 + lg2(numg) |
|
41 LOGICAL qanti(numg) |
|
42 C .. |
|
43 C .. Local Scalars .. |
|
44 INTEGER g |
|
45 C .. |
|
46 C .. External Functions .. |
|
47 LOGICAL qrgnin |
|
48 EXTERNAL qrgnin |
|
49 C .. |
|
50 C .. External Subroutines .. |
|
51 EXTERNAL getcgn |
|
52 C .. |
|
53 C .. Common blocks .. |
|
54 COMMON /globe/m1,m2,a1,a2,a1w,a2w,a1vw,a2vw,ig1,ig2,lg1,lg2,cg1, |
|
55 + cg2,qanti |
|
56 C .. |
|
57 C .. Save statement .. |
|
58 SAVE /globe/ |
|
59 C .. |
|
60 C .. Executable Statements .. |
|
61 C Abort unless random number generator initialized |
|
62 IF (qrgnin()) GO TO 10 |
|
63 WRITE (*,*) ' GETSD called before random number generator ', |
|
64 + ' initialized -- abort!' |
|
65 CALL XSTOPX |
|
66 + (' GETSD called before random number generator initialized') |
|
67 |
|
68 10 CALL getcgn(g) |
|
69 iseed1 = cg1(g) |
|
70 iseed2 = cg2(g) |
|
71 RETURN |
|
72 |
|
73 END |