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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 "fmpq_mpoly.h"
void fmpq_mpoly_divrem(fmpq_mpoly_t Q, fmpq_mpoly_t R,
const fmpq_mpoly_t A, const fmpq_mpoly_t B,
const fmpq_mpoly_ctx_t ctx)
{
fmpz_t scale;
fmpq_t t;
if (fmpq_mpoly_is_zero(B, ctx))
{
flint_throw(FLINT_DIVZERO, "Divide by zero in fmpq_mpoly_divrem");
}
if (fmpq_mpoly_is_zero(A, ctx))
{
fmpq_mpoly_zero(Q, ctx);
fmpq_mpoly_zero(R, ctx);
return;
}
fmpz_init(scale);
fmpz_mpoly_quasidivrem(scale, Q->zpoly, R->zpoly,
A->zpoly, B->zpoly, ctx->zctx);
fmpq_init(t);
fmpq_div_fmpz(t, A->content, scale);
fmpq_div(Q->content, t, B->content);
fmpq_swap(t, R->content);
fmpq_clear(t);
fmpz_clear(scale);
fmpq_mpoly_reduce(Q, ctx);
fmpq_mpoly_reduce(R, ctx);
}