conterm/libc/lnrand.c
Russ Cox 934846f35c a
2005-08-08 12:50:13 +00:00

19 lines
194 B
C

#include <u.h>
#include <libc.h>
#define MASK 0x7fffffffL
long
lnrand(long n)
{
long slop, v;
if(n < 0)
return n;
slop = MASK % n;
do
v = lrand();
while(v <= slop);
return v % n;
}