/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}