LXR linux/arch/mips/math-emu/ieee754m.c

   1/*
   2 * floor, trunc, ceil
   3 */
   4/*
   5 * MIPS floating point support
   6 * Copyright (C) 1994-2000 Algorithmics Ltd.
   7 * http://www.algor.co.uk
   8 *
   9 * ########################################################################
  10 *
  11 *  This program is free software; you can distribute it and/or modify it
  12 *  under the terms of the GNU General Public License (Version 2) as
  13 *  published by the Free Software Foundation.
  14 *
  15 *  This program is distributed in the hope it will be useful, but WITHOUT
  16 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18 *  for more details.
  19 *
  20 *  You should have received a copy of the GNU General Public License along
  21 *  with this program; if not, write to the Free Software Foundation, Inc.,
  22 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  23 *
  24 * ########################################################################
  25 */
  26
  27
  28#include "ieee754.h"
  29
  30ieee754dp ieee754dp_floor(ieee754dp x)
  31{
  32        ieee754dp i;
  33
  34        if (ieee754dp_lt(ieee754dp_modf(x, &i), ieee754dp_zero(0)))
  35                return ieee754dp_sub(i, ieee754dp_one(0));
  36        else
  37                return i;
  38}
  39
  40ieee754dp ieee754dp_ceil(ieee754dp x)
  41{
  42        ieee754dp i;
  43
  44        if (ieee754dp_gt(ieee754dp_modf(x, &i), ieee754dp_zero(0)))
  45                return ieee754dp_add(i, ieee754dp_one(0));
  46        else
  47                return i;
  48}
  49
  50ieee754dp ieee754dp_trunc(ieee754dp x)
  51{
  52        ieee754dp i;
  53
  54        (void) ieee754dp_modf(x, &i);
  55        return i;
  56}
  57