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/*
Copyright (C) 2017 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 "fmpz.h"
#include "mpoly.h"
#include "fmpz_mpoly.h"
void fmpz_mpoly_reverse(fmpz_mpoly_t A,
const fmpz_mpoly_t B, const fmpz_mpoly_ctx_t ctx)
{
slong i;
slong Blen = B->length;
slong N = mpoly_words_per_exp(B->bits, ctx->minfo);
if (A != B)
{
fmpz_mpoly_fit_length(A, Blen, ctx);
fmpz_mpoly_fit_bits(A, B->bits, ctx);
A->bits = B->bits;
A->length = B->length;
for (i = 0; i < Blen; i++)
{
fmpz_set(A->coeffs + i, B->coeffs + Blen - i - 1);
}
}
else
{
for (i = 0; i < Blen/2; i++)
{
fmpz_swap(A->coeffs + i, A->coeffs + Blen - i - 1);
}
}
mpoly_reverse(A->exps, B->exps, Blen, N);
}