git: 9front

ref: f3dc7e55ab7f4b5f7c06d546ae59fc446b45bc6d
dir: /sys/src/cmd/unix/drawterm/libc/nrand.c/

View raw version 
#include	<u.h>
#include	<libc.h>

#define	MASK	0x7fffffffL

int
nrand(int n)
{
	long slop, v;

	if(n < 0)
		return n;
	slop = MASK % n;
	do
		v = lrand();
	while(v <= slop);
	return v % n;
}