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| -rw-r--r-- | include/c99_math.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/c99_math.h b/include/c99_math.h index 250e08d44cf..e906c26aa54 100644 --- a/include/c99_math.h +++ b/include/c99_math.h @@ -185,4 +185,27 @@ fpclassify(double x) #endif +/* Since C++11, the following functions are part of the std namespace. Their C + * counteparts should still exist in the global namespace, however cmath + * undefines those functions, which in glibc 2.23, are defined as macros rather + * than functions as in glibc 2.22. + */ +#if __cplusplus >= 201103L && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 23)) +#include <cmath> + +using std::fpclassify; +using std::isfinite; +using std::isinf; +using std::isnan; +using std::isnormal; +using std::signbit; +using std::isgreater; +using std::isgreaterequal; +using std::isless; +using std::islessequal; +using std::islessgreater; +using std::isunordered; +#endif + + #endif /* #define _C99_MATH_H_ */ |