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pqc/external/flint-2.4.3/interfaces/NTL-interface.cpp
hasufell d51d8e3652
ALL: Add flint
2014-05-24 23:16:06 +02:00

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/*=============================================================================
This file is part of FLINT.
FLINT 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.
FLINT 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.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
NTL-interface.cpp: Functions for conversion between NTL and FLINT format
Copyright (C) 2007 William Hart
Copyright (C) 2011 Sebastian Pancratz
Copyright (C) 2013 Mike Hansen
******************************************************************************/
#include <cstdio>
#include <NTL/ZZ.h>
#include <NTL/ZZX.h>
#include <NTL/mat_ZZ.h>
#include <NTL/lip.h>
#include <NTL/ctools.h>
#include <NTL/g_lip.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#include "NTL-interface.h"
#define ZZ_SIZE(p) (((slong *) (p))[1])
#define ZZ_DATA(p) ((mp_limb_t *) (((slong *) (p)) + 2))
NTL_CLIENT
static void fmpz_set_limbs(fmpz_t f, mp_srcptr x, mp_size_t limbs)
{
if (limbs == 0)
fmpz_zero(f);
else if (limbs == 1)
fmpz_set_ui(f, x[0]);
else
{
__mpz_struct *mpz_ptr = _fmpz_promote(f);
mpz_import(mpz_ptr, limbs, -1, sizeof(mp_limb_t), 0, 0, x);
}
}
void fmpz_set_ZZ(fmpz_t rop, const ZZ& op)
{
const _ntl_gbigint x = op.rep;
if (!x)
fmpz_zero(rop);
else
{
const mp_size_t lw = op.size();
const mp_limb_t *xp = ZZ_DATA(x);
fmpz_set_limbs(rop, xp, lw);
if (op < WORD(0))
fmpz_neg(rop, rop);
}
}
void fmpz_set_ZZ_p(fmpz_t rop, const ZZ_p& op)
{
fmpz_set_ZZ(rop, rep(op));
}
void fmpz_set_zz_p(fmpz_t rop, const zz_p& op)
{
fmpz_set_si(rop, rep(op));
}
void fmpz_get_ZZ(ZZ& rop, const fmpz_t op)
{
mp_limb_t *xp;
_ntl_gbigint *x = &rop.rep;
slong lw = fmpz_size(op);
fmpz c = *op;
if (lw == 0)
{
if (*x) ZZ_SIZE(*x) = 0;
return;
}
_ntl_gsetlength(x, lw);
xp = ZZ_DATA(*x);
if (COEFF_IS_MPZ(c))
{
__mpz_struct * m = COEFF_TO_PTR(c);
mpn_copyi(xp, m->_mp_d, lw);
} else
{
if (c < WORD(0))
xp[0] = -c;
else
xp[0] = c;
}
if (fmpz_sgn(op) < 0) ZZ_SIZE(*x) = -lw;
else ZZ_SIZE(*x) = lw;
}
void fmpz_get_ZZ_p(ZZ_p& rop, const fmpz_t op)
{
ZZ a;
fmpz_get_ZZ(a, op);
conv(rop, a);
}
void fmpz_get_zz_p(zz_p& rop, const fmpz_t op)
{
conv(rop, fmpz_get_si(op));
}
void fmpz_poly_get_ZZX(ZZX& rop, const fmpz_poly_t op)
{
const slong len = op->length;
if (len == 0)
{
rop = 0;
}
else
{
slong i;
ZZ *ap;
rop.rep.SetLength(len);
for (i = 0, ap = rop.rep.elts(); i < len; i++, ap++)
{
fmpz_get_ZZ(*ap, op->coeffs + i);
}
}
}
void fmpz_poly_set_ZZX(fmpz_poly_t rop, const ZZX& op)
{
const slong len = deg(op) + 1;
if (len == 0)
{
fmpz_poly_zero(rop);
}
else
{
slong i;
const ZZ *ap;
fmpz_poly_fit_length(rop, len);
_fmpz_poly_set_length(rop, len);
for (i = 0, ap = op.rep.elts(); i < len; i++, ap++)
{
fmpz_set_ZZ(rop->coeffs + i, *ap);
}
}
}
void fmpz_mod_poly_get_ZZ_pX(ZZ_pX& rop, const fmpz_mod_poly_t op)
{
const slong len = op->length;
if (len == 0)
{
rop = 0;
}
else
{
slong i;
ZZ_p *ap;
rop.rep.SetLength(len);
for (i = 0, ap = rop.rep.elts(); i < len; i++, ap++)
{
fmpz_get_ZZ_p(*ap, op->coeffs + i);
}
}
}
void fmpz_mod_poly_set_ZZ_pX(fmpz_mod_poly_t rop, const ZZ_pX& op)
{
const slong len = deg(op) + 1;
if (len == 0)
{
fmpz_mod_poly_zero(rop);
}
else
{
slong i;
const ZZ_p *ap;
fmpz_mod_poly_fit_length(rop, len);
_fmpz_mod_poly_set_length(rop, len);
for (i = 0, ap = op.rep.elts(); i < len; i++, ap++)
{
fmpz_set_ZZ_p(rop->coeffs + i, *ap);
}
}
}
void fmpz_mod_poly_get_zz_pX(zz_pX& rop, const fmpz_mod_poly_t op)
{
const slong len = op->length;
if (len == 0)
{
rop = 0;
}
else
{
slong i;
zz_p *ap;
rop.rep.SetLength(len);
for (i = 0, ap = rop.rep.elts(); i < len; i++, ap++)
{
fmpz_get_zz_p(*ap, op->coeffs + i);
}
}
}
void fmpz_mod_poly_set_zz_pX(fmpz_mod_poly_t rop, const zz_pX& op)
{
const slong len = deg(op) + 1;
if (len == 0)
{
fmpz_mod_poly_zero(rop);
}
else
{
slong i;
const zz_p *ap;
fmpz_mod_poly_fit_length(rop, len);
_fmpz_mod_poly_set_length(rop, len);
for (i = 0, ap = op.rep.elts(); i < len; i++, ap++)
{
fmpz_set_zz_p(rop->coeffs + i, *ap);
}
}
}
void fq_get_ZZ_pE(ZZ_pE& rop, const fq_t op, const fq_ctx_t ctx)
{
ZZ_pX p;
const slong len = op->length;
if (len == 0)
{
rop = 0;
}
else
{
slong i;
ZZ_p *ap;
p.rep.SetLength(len);
for (i = 0, ap = p.rep.elts(); i < len; i++, ap++)
{
fmpz_get_ZZ_p(*ap, op->coeffs + i);
}
conv(rop, p);
}
}
void fq_set_ZZ_pE(fq_t rop, const ZZ_pE& op, const fq_ctx_t ctx)
{
const slong len = deg(rep(op)) + 1;
if (len == 0)
{
fq_zero(rop, ctx);
}
else
{
slong i;
const ZZ_p *ap;
fmpz_poly_fit_length(rop, len);
_fmpz_poly_set_length(rop, len);
for (i = 0, ap = rep(op).rep.elts(); i < len; i++, ap++)
{
fmpz_set_ZZ_p(rop->coeffs + i, *ap);
}
_fmpz_poly_normalise(rop);
}
}
void fq_poly_get_ZZ_pEX(ZZ_pEX& rop, const fq_poly_t op, const fq_ctx_t ctx)
{
const slong len = op->length;
if (len == 0)
{
rop = 0;
}
else
{
slong i;
ZZ_pE *ap;
rop.rep.SetLength(len);
for (i = 0, ap = rop.rep.elts(); i < len; i++, ap++)
{
fq_get_ZZ_pE(*ap, op->coeffs + i, ctx);
}
}
}
void fq_poly_set_ZZ_pEX(fq_poly_t rop, const ZZ_pEX& op, const fq_ctx_t ctx)
{
const slong len = deg(op) + 1;
if (len == 0)
{
fq_poly_zero(rop, ctx);
}
else
{
slong i;
const ZZ_pE *ap;
fq_poly_fit_length(rop, len, ctx);
_fq_poly_set_length(rop, len, ctx);
for (i = 0, ap = op.rep.elts(); i < len; i++, ap++)
{
fq_set_ZZ_pE(rop->coeffs + i, *ap, ctx);
}
_fq_poly_normalise(rop, ctx);
}
}
/* ----------------------------------------- */
void fq_get_zz_pE(zz_pE& rop, const fq_t op, const fq_ctx_t ctx)
{
zz_pX p;
const slong len = op->length;
if (len == 0)
{
rop = 0;
}
else
{
slong i;
zz_p *ap;
p.rep.SetLength(len);
for (i = 0, ap = p.rep.elts(); i < len; i++, ap++)
{
fmpz_get_zz_p(*ap, op->coeffs + i);
}
conv(rop, p);
}
}
void fq_set_zz_pE(fq_t rop, const zz_pE& op, const fq_ctx_t ctx)
{
const slong len = deg(rep(op)) + 1;
if (len == 0)
{
fq_zero(rop, ctx);
}
else
{
slong i;
const zz_p *ap;
fmpz_poly_fit_length(rop, len);
_fmpz_poly_set_length(rop, len);
for (i = 0, ap = rep(op).rep.elts(); i < len; i++, ap++)
{
fmpz_set_zz_p(rop->coeffs + i, *ap);
}
_fmpz_poly_normalise(rop);
}
}
void fq_poly_get_zz_pEX(zz_pEX& rop, const fq_poly_t op, const fq_ctx_t ctx)
{
const slong len = op->length;
if (len == 0)
{
rop = 0;
}
else
{
slong i;
zz_pE *ap;
rop.rep.SetLength(len);
for (i = 0, ap = rop.rep.elts(); i < len; i++, ap++)
{
fq_get_zz_pE(*ap, op->coeffs + i, ctx);
}
}
}
void fq_poly_set_zz_pEX(fq_poly_t rop, const zz_pEX& op, const fq_ctx_t ctx)
{
const slong len = deg(op) + 1;
if (len == 0)
{
fq_poly_zero(rop, ctx);
}
else
{
slong i;
const zz_pE *ap;
fq_poly_fit_length(rop, len, ctx);
_fq_poly_set_length(rop, len, ctx);
for (i = 0, ap = op.rep.elts(); i < len; i++, ap++)
{
fq_set_zz_pE(rop->coeffs + i, *ap, ctx);
}
_fq_poly_normalise(rop, ctx);
}
}
#undef ZZ_SIZE
#undef ZZ_DATA
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