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/* nettle, low-level cryptographics library
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* Copyright (C) 2013 Niels Möller
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* The nettle library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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* The nettle library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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* You should have received a copy of the GNU Lesser General Public License
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* along with the nettle library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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#ifndef NETTLE_GMP_GLUE_H_INCLUDED
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#define NETTLE_GMP_GLUE_H_INCLUDED
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#include "nettle-stdint.h"
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#define GMP_HAVE_mpz_limbs_read 1
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#define GMP_HAVE_mpz_limbs_read 0
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#define GMP_HAVE_mpn_copyd 1
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#define GMP_HAVE_mpn_copyd 0
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#if !GMP_HAVE_mpz_limbs_read
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#define mpz_limbs_read _nettle_mpz_limbs_read
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#define mpz_limbs_write _nettle_mpz_limbs_write
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#define mpz_limbs_modify _nettle_mpz_limbs_modify
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#define mpz_limbs_finish _nettle_mpz_limbs_finish
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#define mpz_roinit_n _nettle_mpz_roinit_n
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#if !GMP_HAVE_mpn_copyd
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#define mpn_copyd _nettle_mpn_copyd
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#define mpn_copyi _nettle_mpn_copyi
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#define mpn_zero _nettle_mpn_zero
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#define mpn_sqr(rp, ap, n) mpn_mul_n((rp), (ap), (ap), (n))
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#define mpz_limbs_cmp _nettle_mpz_limbs_cmp
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#define mpz_limbs_read_n _nettle_mpz_limbs_read_n
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#define mpz_limbs_copy _nettle_mpz_limbs_copy
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#define mpz_set_n _nettle_mpz_set_n
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#define mpn_set_base256 _nettle_mpn_set_base256
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#define gmp_alloc_limbs _nettle_gmp_alloc_limbs
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#define gmp_free_limbs _nettle_gmp_free_limbs
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/* Use only in-place operations, so we can fall back to addmul_1/submul_1 */
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# define cnd_add_n(cnd, rp, ap, n) mpn_cnd_add_n ((cnd), (rp), (rp), (ap), (n))
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# define cnd_sub_n(cnd, rp, ap, n) mpn_cnd_sub_n ((cnd), (rp), (rp), (ap), (n))
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# define cnd_add_n(cnd, rp, ap, n) mpn_addmul_1 ((rp), (ap), (n), (cnd) != 0)
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# define cnd_sub_n(cnd, rp, ap, n) mpn_submul_1 ((rp), (ap), (n), (cnd) != 0)
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/* Some functions for interfacing between mpz and mpn code. Signs of
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the mpz numbers are generally ignored. */
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#if !GMP_HAVE_mpz_limbs_read
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/* Read access to mpz numbers. */
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/* Return limb pointer, for read-only operations. Use mpz_size to get
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the number of limbs. */
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mpz_limbs_read (const mpz_srcptr x);
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/* Write access to mpz numbers. */
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/* Get a limb pointer for writing, previous contents may be
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mpz_limbs_write (mpz_ptr x, mp_size_t n);
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/* Get a limb pointer for writing, previous contents is intact. */
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mpz_limbs_modify (mpz_ptr x, mp_size_t n);
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mpz_limbs_finish (mpz_ptr x, mp_size_t n);
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/* Using an mpn number as an mpz. Can be used for read-only access
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only. x must not be cleared or reallocated. */
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mpz_roinit_n (mpz_ptr x, const mp_limb_t *xp, mp_size_t xs);
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#endif /* !GMP_HAVE_mpz_limbs_read */
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#if !GMP_HAVE_mpn_copyd
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/* Copy elements, backwards */
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mpn_copyd (mp_ptr dst, mp_srcptr src, mp_size_t n);
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/* Copy elements, forwards */
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mpn_copyi (mp_ptr dst, mp_srcptr src, mp_size_t n);
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mpn_zero (mp_ptr ptr, mp_size_t n);
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#endif /* !GMP_HAVE_mpn_copyd */
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/* Convenience functions */
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mpz_limbs_cmp (mpz_srcptr a, const mp_limb_t *bp, mp_size_t bn);
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/* Get a pointer to an n limb area, for read-only operation. n must be
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greater or equal to the current size, and the mpz is zero-padded if
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mpz_limbs_read_n (mpz_ptr x, mp_size_t n);
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/* Copy limbs, with zero-padding. */
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/* FIXME: Reorder arguments, on the theory that the first argument of
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an _mpz_* fucntion should be an mpz_t? Or rename to _mpz_get_limbs,
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with argument order consistent with mpz_get_*. */
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mpz_limbs_copy (mp_limb_t *xp, mpz_srcptr x, mp_size_t n);
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mpz_set_n (mpz_t r, const mp_limb_t *xp, mp_size_t xn);
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/* Like mpn_set_str, but always writes rn limbs. If input is larger,
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higher bits are ignored. */
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mpn_set_base256 (mp_limb_t *rp, mp_size_t rn,
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const uint8_t *xp, size_t xn);
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gmp_alloc_limbs (mp_size_t n);
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gmp_free_limbs (mp_limb_t *p, mp_size_t n);
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#endif /* NETTLE_GMP_GLUE_H_INCLUDED */
added
removed
gmp-glue.h
