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