/*
    Copyright (C) 2011, 2012 Sebastian Pancratz 
    Copyright (C) 2012 Andres Goens
    Copyright (C) 2013 Mike Hansen

    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 2.1 of the License, or
    (at your option) any later version.  See <https://www.gnu.org/licenses/>.
*/

#include "fq.h"

void
fq_sub(fq_t rop, const fq_t op1, const fq_t op2, const fq_ctx_t ctx)
{
    slong max = FLINT_MAX(op1->length, op2->length);

    fmpz_poly_fit_length(rop, max);

    _fmpz_mod_poly_sub(rop->coeffs,
                       op1->coeffs, op1->length, op2->coeffs, op2->length,
                       fq_ctx_prime(ctx));

    _fmpz_poly_set_length(rop, max);
    _fmpz_poly_normalise(rop);
}