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C
C Demonstrates the use of sprng in subroutines
program sprngf
implicit none
#include "sprng_f.h"
integer streamnum, nstreams, seed,junk
SPRNG_POINTER stream
C--- reading in a generator type
integer gtype
#include "genf_types_menu.h"
print *,'Type in a generator type (integers: 0,1,2,3,4,5): '
read *, gtype
C---
streamnum = 0
nstreams = 1
seed = 985456376
C initialize stream
stream = init_sprng(gtype,streamnum,nstreams,seed,SPRNG_DEFAULT)
print *, 'Printing information about new stream'
junk = print_sprng(stream)
call sub1(stream)
junk = free_sprng(stream)
end
C --- print random numbers in subroutine ---
subroutine sub1(stream)
#include "sprng_f.h"
SPRNG_POINTER stream
real *8 rn
print *, 'Printing 3 double precision numbers in [0,1): '
do 100 i = 1, 3
rn = sprng(stream)
write(*, "(i6, 2H , f19.16)") i, rn
100 continue
return
end
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