diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/ruby/missing.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/ruby/missing.h b/include/ruby/missing.h index dc3fd502b5..2d3852c131 100644 --- a/include/ruby/missing.h +++ b/include/ruby/missing.h @@ -168,6 +168,8 @@ RUBY_EXTERN const union bytesequence4_or_float rb_nan; # include <ieeefp.h> # endif # define isinf(x) (!finite(x) && !isnan(x)) +# elif __cplusplus >= 201103L +# include <cmath> // it must include constexpr bool isinf(double); # else RUBY_EXTERN int isinf(double); # endif @@ -176,7 +178,11 @@ RUBY_EXTERN int isinf(double); #ifndef isnan # ifndef HAVE_ISNAN +# if __cplusplus >= 201103L +# include <cmath> // it must include constexpr bool isnan(double); +# else RUBY_EXTERN int isnan(double); +# endif # endif #endif |