1 /* Truncate argument to nearest integral value not larger than the argument.
2 Copyright (C) 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
23 #include "math_private.h"
33 EXTRACT_WORDS (i0
, i1
, x
);
35 j0
= ((i0
>> 20) & 0x7ff) - 0x3ff;
39 /* The magnitude of the number is < 1 so the result is +-0. */
40 INSERT_WORDS (x
, sx
, 0);
42 INSERT_WORDS (x
, sx
| i0
& ~(0x000fffff >> j0
), 0);
47 /* x is inf or NaN. */
52 INSERT_WORDS (x
, i0
, i1
& ~(0xffffffffu
>> (j0
- 20)));
57 weak_alias (__trunc
, trunc
)
59 strong_alias (__trunc
, __truncl
)
60 weak_alias (__trunc
, truncl
)