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

    This file is part of ARB.

    ARB 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.

    ARB 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 ARB; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

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

    Copyright (C) 2012 Fredrik Johansson

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

#include "fmpr.h"

long
fmpr_exp(fmpr_t y, const fmpr_t x, slong prec, fmpr_rnd_t rnd)
{
    if (fmpr_is_special(x))
    {
        if (fmpr_is_zero(x))
            fmpr_one(y);
        else if (fmpr_is_pos_inf(x))
            fmpr_pos_inf(y);
        else if (fmpr_is_neg_inf(x))
            fmpr_zero(y);
        else
            fmpr_nan(y);

        return FMPR_RESULT_EXACT;
    }
    else
    {
        slong r;
        CALL_MPFR_FUNC(r, mpfr_exp, y, x, prec, rnd);
        return r;
    }
}

long
fmpr_expm1(fmpr_t y, const fmpr_t x, slong prec, fmpr_rnd_t rnd)
{
    if (fmpr_is_special(x))
    {
        if (fmpr_is_zero(x))
            fmpr_zero(y);
        else if (fmpr_is_pos_inf(x))
            fmpr_pos_inf(y);
        else if (fmpr_is_neg_inf(x))
            fmpr_set_si(y, -1L);
        else
            fmpr_nan(y);

        return FMPR_RESULT_EXACT;
    }
    else
    {
        slong r;
        CALL_MPFR_FUNC(r, mpfr_expm1, y, x, prec, rnd);
        return r;
    }
}