ref: 550a8ec5f943b87172668581e67128d4770c6e48
dir: /libc/lnrand.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;
}