shithub: riscv

ref: 4fd55abb8e6dc11b257699cbd095fa5ef60e1ece
dir: /sys/src/libc/port/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;
}