Sha256: 7f2ddf8c8159517bca3d8047ec169a5d1a68f8f75ac5a6962e36b9d9e591ed21
Contents?: true
Size: 774 Bytes
Versions: 19
Compression:
Stored size: 774 Bytes
Contents
#include "ruby.h"
#include "cumo/narray.h"
#include "SFMT.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <time.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
static u_int64_t
random_seed()
{
static int n = 0;
struct timeval tv;
gettimeofday(&tv, 0);
return tv.tv_sec ^ tv.tv_usec ^ getpid() ^ n++;
}
static VALUE
cumo_na_s_srand(int argc, VALUE *argv, VALUE obj)
{
VALUE vseed;
u_int64_t seed;
//rb_secure(4);
if (rb_scan_args(argc, argv, "01", &vseed) == 0) {
seed = random_seed();
}
else {
seed = NUM2UINT64(vseed);
}
init_gen_rand(seed);
return Qnil;
}
void
Init_cumo_na_rand() {
rb_define_singleton_method(cNArray, "srand", cumo_na_s_srand, -1);
init_gen_rand(0);
}
Version data entries
19 entries across 19 versions & 1 rubygems