arb/arf/mul_special.c
2014-04-28 00:45:55 +02:00

52 lines
1.6 KiB
C

/*=============================================================================
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) 2014 Fredrik Johansson
******************************************************************************/
#include "arf.h"
void
arf_mul_special(arf_t z, const arf_t x, const arf_t y)
{
if (arf_is_zero(x))
{
if (arf_is_finite(y))
arf_zero(z);
else
arf_nan(z);
}
else if (arf_is_zero(y))
{
if (arf_is_finite(x))
arf_zero(z);
else
arf_nan(z);
}
else if (arf_is_nan(x) || arf_is_nan(y))
arf_nan(z);
else if (arf_sgn(x) == arf_sgn(y))
arf_pos_inf(z);
else
arf_neg_inf(z);
}