git: 9front

ref: 413f44770a711c5259303a2e6ba3bfd61a89cda9
dir: /sys/src/libc/port/lnrand.c/

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#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;
}