/* some multiprecision utilities
 * Copyright (C) 1997 Angelos D. Keromytis.
 * Copyright (C) 1998-2001  D. Hugh Redelmeier.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * RCSID $Id: mp_defs.h,v 1.2 2006/01/06 11:40:45 as Exp $
 */

#ifndef _MP_DEFS_H
#define _MP_DEFS_H

#include <gmp.h>

#include "defs.h"

extern void n_to_mpz(MP_INT *mp, const u_char *nbytes, size_t nlen);
extern chunk_t mpz_to_n(const MP_INT *mp, size_t bytes);

/* var := mod(base ** exp, mod), ensuring var is mpz_inited */
#define mpz_init_powm(flag, var, base, exp, mod) { \
    if (!(flag)) \
	mpz_init(&(var)); \
    (flag) = TRUE; \
    mpz_powm(&(var), &(base), &(exp), (mod)); \
    }

#endif /* _MP_DEFS_H */