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/*
Copyright (C) 2018 Daniel Schultz
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "fmpz.h"
#include "mpoly.h"
#include "fmpz_mpoly.h"
void fmpz_mpoly_get_coeff_fmpz_monomial(fmpz_t c, const fmpz_mpoly_t A,
const fmpz_mpoly_t M, const fmpz_mpoly_ctx_t ctx)
{
slong index;
if (M->length != WORD(1))
{
flint_throw(FLINT_ERROR, "M not monomial in fmpz_mpoly_get_coeff_fmpz_monomial");
}
index = mpoly_monomial_index_monomial(A->exps, A->bits, A->length,
M->exps, M->bits, ctx->minfo);
if (index < 0)
{
fmpz_zero(c);
}
else
{
FLINT_ASSERT(index < A->length);
fmpz_set(c, A->coeffs + index);
}
}