arb/mag/cmp.c
2014-08-13 16:10:37 +02:00

51 lines
1.5 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 "mag.h"
int
mag_cmp(const mag_t x, const mag_t y)
{
int c;
if (mag_equal(x, y))
return 0;
if (mag_is_special(x) || mag_is_special(y))
{
if (mag_is_zero(x)) return -1;
if (mag_is_zero(y)) return 1;
if (mag_is_inf(x)) return 1;
if (mag_is_inf(y)) return -1;
}
c = fmpz_cmp(MAG_EXPREF(x), MAG_EXPREF(y));
if (c == 0)
return (MAG_MAN(x) < MAG_MAN(y)) ? -1 : 1;
return (c < 0) ? -1 : 1;
}