1 // Copyright 2020 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 #if defined(__cplusplus) 17 18 /// Evaluates true if the provided C++ standard (98, 11, 14, 17, 20, 23) is 19 /// supported by the compiler. This is a simple alternative to checking the 20 /// value of the `__cplusplus` macro. 21 #define PW_CXX_STANDARD_IS_SUPPORTED(std) \ 22 (__cplusplus >= _PW_CXX_STANDARD_##std()) 23 24 /// Evaluates true if the provided C standard (89, 98, 11, 17, 23) is supported 25 /// by the compiler. This is a simple alternative to checking the value of the 26 /// `__STDC_VERSION__` macro. 27 #define PW_C_STANDARD_IS_SUPPORTED(std) (0 >= _PW_C_STANDARD_##std()) 28 29 #elif defined(__STDC_VERSION__) 30 31 #define PW_CXX_STANDARD_IS_SUPPORTED(std) (0 >= _PW_CXX_STANDARD_##std()) 32 33 #define PW_C_STANDARD_IS_SUPPORTED(std) \ 34 (__STDC_VERSION__ >= _PW_C_STANDARD_##std()) 35 36 #endif // defined(__cplusplus) 37 38 // Standard values of __cplusplus and __STDC_VERSION__. See the GCC docs for 39 // more info: https://gcc.gnu.org/onlinedocs/cpp/Standard-Predefined-Macros.html 40 #define _PW_CXX_STANDARD_98() 199711L 41 #define _PW_CXX_STANDARD_11() 201103L 42 #define _PW_CXX_STANDARD_14() 201402L 43 #define _PW_CXX_STANDARD_17() 201703L 44 #define _PW_CXX_STANDARD_20() 202002L 45 #define _PW_CXX_STANDARD_23() 202302L 46 47 #define _PW_C_STANDARD_89() 199409L 48 #define _PW_C_STANDARD_99() 199901L 49 #define _PW_C_STANDARD_11() 201112L 50 #define _PW_C_STANDARD_17() 201710L 51 #define _PW_C_STANDARD_23() 202311L 52