1 498bb221 2004-03-21 devnull #include	<u.h>
 2 498bb221 2004-03-21 devnull #include	<libc.h>
 3 498bb221 2004-03-21 devnull 
 4 498bb221 2004-03-21 devnull #define	MASK	0x7fffffffL
 5 498bb221 2004-03-21 devnull 
 6 498bb221 2004-03-21 devnull long
 7 498bb221 2004-03-21 devnull lnrand(long n)
 8 498bb221 2004-03-21 devnull {
 9 498bb221 2004-03-21 devnull 	long slop, v;
10 498bb221 2004-03-21 devnull 
11 498bb221 2004-03-21 devnull 	if(n < 0)
12 498bb221 2004-03-21 devnull 		return n;
13 498bb221 2004-03-21 devnull 	slop = MASK % n;
14 498bb221 2004-03-21 devnull 	do
15 498bb221 2004-03-21 devnull 		v = lrand();
16 498bb221 2004-03-21 devnull 	while(v <= slop);
17 498bb221 2004-03-21 devnull 	return v % n;
18 498bb221 2004-03-21 devnull }