diff options
Diffstat (limited to 'libcxx/include/math.h')
| -rw-r--r-- | libcxx/include/math.h | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/libcxx/include/math.h b/libcxx/include/math.h index 1476772351c..cd055caef72 100644 --- a/libcxx/include/math.h +++ b/libcxx/include/math.h @@ -8,16 +8,6 @@ // //===----------------------------------------------------------------------===// -// This include lives outside the header guard in order to support an MSVC -// extension which allows users to do: -// -// #define _USE_MATH_DEFINES -// #include <math.h> -// -// and receive the definitions of mathematical constants, even if <math.h> -// has previously been included. -#include_next <math.h> - #ifndef _LIBCPP_MATH_H #define _LIBCPP_MATH_H @@ -308,6 +298,8 @@ long double truncl(long double x); #pragma GCC system_header #endif +#include_next <math.h> + #ifdef __cplusplus // We support including .h headers inside 'extern "C"' contexts, so switch @@ -1494,4 +1486,18 @@ trunc(_A1 __lcpp_x) _NOEXCEPT {return ::trunc((double)__lcpp_x);} #endif // __cplusplus +#else // _LIBCPP_MATH_H + +// This include lives outside the header guard in order to support an MSVC +// extension which allows users to do: +// +// #define _USE_MATH_DEFINES +// #include <math.h> +// +// and receive the definitions of mathematical constants, even if <math.h> +// has previously been included. +#if defined(_LIBCPP_MSVCRT) && defined(_USE_MATH_DEFINES) +#include_next <math.h> +#endif + #endif // _LIBCPP_MATH_H |
