| // Copyright (C) 2020-2022 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library 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 General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-do compile { target c++17 } } |
| |
| #include <numeric> |
| #include <limits.h> |
| |
| void |
| test01() |
| { |
| // PR libstdc++/92978 |
| static_assert( std::gcd(-120, 10U) == 10 ); |
| static_assert( std::gcd(120U, -10) == 10 ); |
| } |
| |
| void |
| test02() |
| { |
| // |INT_MIN| should not be undefined, as long as it fits in the result type. |
| static_assert( std::gcd(INT_MIN, 0LL) == 1LL+INT_MAX ); |
| static_assert( std::gcd(0LL, INT_MIN) == 1LL+INT_MAX ); |
| static_assert( std::gcd(INT_MIN, 0LL + INT_MIN) == 1LL + INT_MAX ); |
| static_assert( std::gcd(INT_MIN, 1LL + INT_MAX) == 1LL + INT_MAX ); |
| static_assert( std::gcd(SHRT_MIN, 1U + SHRT_MAX) == 1U + SHRT_MAX ); |
| } |