projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 8d9254fc | 1 | // Copyright (C) 2019-2020 Free Software Foundation, Inc. |
| f1355c8d JW |
2 | // |
| 3 | // This file is part of the GNU ISO C++ Library. This library is free | |
| 4 | // software; you can redistribute it and/or modify it under the | |
| 5 | // terms of the GNU General Public License as published by the | |
| 6 | // Free Software Foundation; either version 3, or (at your option) | |
| 7 | // any later version. | |
| 8 | ||
| 9 | // This library is distributed in the hope that it will be useful, | |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | // GNU General Public License for more details. | |
| 13 | ||
| 14 | // You should have received a copy of the GNU General Public License along | |
| 15 | // with this library; see the file COPYING3. If not see | |
| 16 | // <http://www.gnu.org/licenses/>. | |
| 17 | ||
| 18 | // { dg-options "-std=gnu++2a" } | |
| 19 | // { dg-do compile { target c++2a } } | |
| 20 | ||
| 21 | #include <algorithm> | |
| 22 | ||
| 23 | constexpr bool | |
| 24 | test01(int i) | |
| 25 | { | |
| 26 | int a1[] = { 0, 1, 2, 3, 4, 5, 6, i, 8 }; | |
| 27 | long a2[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8 }; | |
| 28 | ||
| 29 | return std::lexicographical_compare_three_way(a1, a1+0, a2, a2+0) == 0 | |
| 30 | && std::lexicographical_compare_three_way(a1, a1+9, a2, a2+9) == (i <=> 7) | |
| 31 | && std::lexicographical_compare_three_way(a1, a1+7, a2, a2+7) == 0 | |
| 32 | && std::lexicographical_compare_three_way(a1, a1+8, a2, a2+7) > 0 | |
| 33 | && std::lexicographical_compare_three_way(a1, a1+7, a2, a2+8) < 0; | |
| 34 | } | |
| 35 | ||
| 36 | static_assert( test01(~7) ); | |
| 37 | static_assert( test01(7) ); | |
| 38 | static_assert( test01(8) ); | |
| 39 | ||
| 40 | constexpr bool | |
| 41 | test02(unsigned char i) | |
| 42 | { | |
| 43 | unsigned char a1[] = { 0, 1, 2, 3, 4, 5, 6, i, 8 }; | |
| 44 | unsigned char a2[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8 }; | |
| 45 | ||
| 46 | return std::lexicographical_compare_three_way(a1, a1+0, a2, a2+0) == 0 | |
| 47 | && std::lexicographical_compare_three_way(a1, a1+9, a2, a2+9) == (i <=> 7) | |
| 48 | && std::lexicographical_compare_three_way(a1, a1+7, a2, a2+7) == 0 | |
| 49 | && std::lexicographical_compare_three_way(a1, a1+8, a2, a2+7) > 0 | |
| 50 | && std::lexicographical_compare_three_way(a1, a1+7, a2, a2+8) < 0; | |
| 51 | } | |
| 52 | ||
| 53 | static_assert( test02(248) ); | |
| 54 | static_assert( test02(7) ); | |
| 55 | static_assert( test02(8) ); | |
| 56 | ||
| 57 | constexpr bool | |
| 58 | test03(unsigned char* p) | |
| 59 | { | |
| 60 | unsigned char a[2] = { 1, 2 }; | |
| 61 | return std::lexicographical_compare_three_way(p, p, a, a+2) < 0 | |
| 62 | && std::lexicographical_compare_three_way(a, a+2, p, p) > 0; | |
| 63 | } | |
| 64 | ||
| 65 | static_assert( test03(nullptr) ); // ensure memcmp not called with nullptr |