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/*
Copyright (C) 2016 William Hart
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 "mpoly.h"
#include "fmpz_mpoly.h"
void fmpz_mpoly_init(fmpz_mpoly_t A, const fmpz_mpoly_ctx_t FLINT_UNUSED(ctx))
{
/* default to MPOLY_MIN_BITS bits per exponent */
A->coeffs = NULL;
A->exps = NULL;
A->alloc = 0;
A->length = 0;
A->bits = MPOLY_MIN_BITS;
}
void fmpz_mpoly_init3(fmpz_mpoly_t A, slong alloc, flint_bitcnt_t bits,
const fmpz_mpoly_ctx_t ctx)
{
slong N = mpoly_words_per_exp(bits, ctx->minfo);
/* sanitize alloc input */
alloc = FLINT_MAX(alloc, WORD(0));
if (alloc != 0)
{
A->coeffs = (fmpz *) flint_calloc(alloc, sizeof(fmpz));
A->exps = (ulong *) flint_malloc(alloc*N*sizeof(ulong));
} else
{
A->coeffs = NULL;
A->exps = NULL;
}
A->alloc = alloc;
A->length = 0;
A->bits = bits;
}
void fmpz_mpoly_init2(fmpz_mpoly_t A, slong alloc, const fmpz_mpoly_ctx_t ctx)
{
/* default to MPOLY_MIN_BITS bits per exponent */
fmpz_mpoly_init3(A, alloc, MPOLY_MIN_BITS, ctx);
}