src/libmp/port/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);
}