]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/ieee754/ldbl-96/s_roundl.c
1 /* Round long double to integer away from zero.
2 Copyright (C) 1997-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #define NO_MATH_REDIRECT
22 #include <math_private.h>
23 #include <libm-alias-ldouble.h>
27 __roundl (long double x
)
32 GET_LDOUBLE_WORDS (se
, i0
, i1
, x
);
33 j0
= (se
& 0x7fff) - 0x3fff;
48 uint32_t i
= 0x7fffffff >> j0
;
49 if (((i0
& i
) | i1
) == 0)
53 uint32_t j
= i0
+ (0x40000000 >> j0
);
56 i0
= (j
& ~i
) | 0x80000000;
70 uint32_t i
= 0xffffffff >> (j0
- 31);
75 uint32_t j
= i1
+ (1 << (62 - j0
));
90 SET_LDOUBLE_WORDS (x
, se
, i0
, i1
);
93 libm_alias_ldouble (__round
, round
)