text: // Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/
  //
  // SPDX-License-Identifier: BSD-2-Clause
  
  #ifndef COMMON_OVERFLOW_H
  #define COMMON_OVERFLOW_H
  
  // Performs an addition, subtraction or multiplication operation,
  // returning whether the computation caused an overflow. These
  // intrinsics are available as of Clang 3.8 and GCC 5.
  #define add_overflow(x, y, out) __builtin_add_overflow(x, y, out)
  #define sub_overflow(x, y, out) __builtin_sub_overflow(x, y, out)
  #define mul_overflow(x, y, out) __builtin_mul_overflow(x, y, out)
  
  #endif
  