/*=============================================================================

    This file is part of FLINT.

    FLINT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    FLINT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with FLINT; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

=============================================================================*/
/******************************************************************************

    Copyright (C) 2009 William Hart

******************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#include "ulong_extras.h"

void
fmpz_poly_randtest(fmpz_poly_t f, flint_rand_t state, 
                   slong len, mp_bitcnt_t bits)
{
    fmpz_poly_fit_length(f, len);
    _fmpz_vec_randtest(f->coeffs, state, len, bits);
    _fmpz_poly_set_length(f, len);
    _fmpz_poly_normalise(f);
}

void
fmpz_poly_randtest_unsigned(fmpz_poly_t f, flint_rand_t state, 
                            slong len, mp_bitcnt_t bits)
{
    fmpz_poly_fit_length(f, len);
    _fmpz_vec_randtest_unsigned(f->coeffs, state, len, bits);
    _fmpz_poly_set_length(f, len);
    _fmpz_poly_normalise(f);
}

void
fmpz_poly_randtest_not_zero(fmpz_poly_t f, flint_rand_t state, 
                            slong len, mp_bitcnt_t bits)
{
    if ((bits == 0) || (len == 0))
    {
        flint_printf("Exception (fmpz_poly_randtest_not_zero). bits or len is zero.\n");
        abort();
    }

    fmpz_poly_randtest(f, state, len, bits);
    if (fmpz_poly_is_zero(f))
        fmpz_poly_set_ui(f, 1);
}