ref: e4f9a4578a50e9b6694514e7c94004f4b82f6eab
dir: /libmp/mpmod.c/
#include "os.h"
#include <mp.h>
#include "dat.h"
// remainder = b mod m
//
// knuth, vol 2, pp 398-400
void
mpmod(mpint *b, mpint *m, mpint *remainder)
{
mpdiv(b, m, nil, remainder);
if(remainder->sign < 0)
mpadd(m, remainder, remainder);
}