shithub: riscv

ref: faa625a1d5ab47ac0438b2cea5b2bde1ea747b8b
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;
}