ref: fdd1fd39e3a616139e48dae992ebc5d5cd710fb7
dir: /3rd/mp/mpmod.c/
#include "platform.h"
#include "mp.h"
void
mpmod(mpint *x, mpint *n, mpint *r)
{
int sign;
mpint *ns;
sign = x->sign;
ns = sign < 0 && n == r ? mpcopy(n) : n;
mpdiv(x, n, nil, r);
if(sign < 0){
mpmagsub(ns, r, r);
if(ns != n) mpfree(ns);
}
}