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/*
Copyright (C) 2011 Sebastian Pancratz
Copyright (C) 2022, 2024 Albin Ahlbäck
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 "gmpcompat.h"
#include "fmpz.h"
int
fmpz_divisible_ui(const fmpz_t f, ulong g)
{
if (*f == WORD(0))
return 1;
if (!COEFF_IS_MPZ(*f))
{
ulong fa = FLINT_ABS(*f);
return !(fa % g);
}
else
return flint_mpz_divisible_ui_p(COEFF_TO_PTR(*f), g);
}
int fmpz_divisible(const fmpz_t x, const fmpz_t p)
{
fmpz y = *x;
fmpz q = *p;
if (y == WORD(0))
return 1;
if (q == WORD(0))
return 0;
if (!COEFF_IS_MPZ(y))
{
if (!COEFF_IS_MPZ(q))
{
return !(y % q);
}
else
{
return 0;
}
}
else
{
if (!COEFF_IS_MPZ(q))
{
return flint_mpz_divisible_ui_p(COEFF_TO_PTR(y), FLINT_ABS(q));
}
else
{
return mpz_divisible_p(COEFF_TO_PTR(y), COEFF_TO_PTR(q));
}
}
}