#include "platform.h"#include "mp.h" voidmpmod(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);	}}