1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/* stdckdint.h -- checked integer arithmetic
Copyright 2022-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GL_STDCKDINT_H
#define _GL_STDCKDINT_H
#include "intprops-internal.h"
/* Store into *R the low-order bits of A + B, A - B, A * B, respectively.
Return 1 if the result overflows, 0 otherwise.
A, B, and *R can have any integer type other than char, bool, a
bit-precise integer type, or an enumeration type.
These are like the standard macros introduced in C23, except that
arguments should not have side effects. */
#define ckd_add(r, a, b) ((bool) _GL_INT_ADD_WRAPV (a, b, r))
#define ckd_sub(r, a, b) ((bool) _GL_INT_SUBTRACT_WRAPV (a, b, r))
#define ckd_mul(r, a, b) ((bool) _GL_INT_MULTIPLY_WRAPV (a, b, r))
#endif /* _GL_STDCKDINT_H */
|
