19 lines
191 B
C
19 lines
191 B
C
#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;
|
|
}
|