diff options
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/macros.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/util/macros.h b/src/util/macros.h index 180f2f6436b..74bd8bfad88 100644 --- a/src/util/macros.h +++ b/src/util/macros.h @@ -158,7 +158,15 @@ do { \ # endif #endif -#if defined(fpclassify) +/* The fallbacks below don't work correctly in C++ and properly detecting + * FP_NORMAL in C++ is hard. Since we don't use fpclassify in any C++ code + * at the moment, we can just predicate this whole thing by not being in + * C++ and we shoudld be ok. If we ever want to use fpclassify in a C++ + * file, we will have to revisit this. + */ +#ifndef __cplusplus + +#ifdef FP_NORMAL /* ISO C99 says that fpclassify is a macro. Assume that any implementation * of fpclassify, whether it's in a C99 compiler or not, will be a macro. */ @@ -199,7 +207,7 @@ fpclassify(double x) #else -enum {FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL, FP_NORMAL} +static inline enum {FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL, FP_NORMAL} fpclassify(double x) { /* XXX do something better someday */ @@ -208,4 +216,6 @@ fpclassify(double x) #endif +#endif /* __cplusplus */ + #endif /* UTIL_MACROS_H */ |