Mercurial > vim
diff src/macros.h @ 8289:6ae3fb4fe7c1 v7.4.1437
commit https://github.com/vim/vim/commit/136f29a91dbafce424e31a4af133155f997e8f78
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Feb 27 20:14:15 2016 +0100
patch 7.4.1437
Problem: Old system doesn't have isinf() and NAN. (Ben Fritz)
Solution: Adjust #ifdefs. Detect isnan() and isinf() functions with
configure. Use a replacement when missing. (Kazunobu Kuriyama)
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sat, 27 Feb 2016 20:15:04 +0100 |
| parents | 6ee794dc950e |
| children | 18fd94bd4eb8 |
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--- a/src/macros.h +++ b/src/macros.h @@ -320,3 +320,32 @@ #if defined(FEAT_CHANNEL) || defined(FEAT_JOB) || defined(FEAT_CLIENTSERVER) # define MESSAGE_QUEUE #endif + +#if defined(FEAT_EVAL) && defined(FEAT_FLOAT) +# include <float.h> +# if defined(HAVE_MATH_H) + /* for isnan() and isinf() */ +# include <math.h> +# endif +# if defined(WIN32) && !defined(isnan) +# define isnan(x) _isnan(x) +# define isinf(x) (!_finite(x) && !_isnan(x)) +# else +# ifndef HAVE_ISNAN + static inline int isnan(double x) { return x != x; } +# endif +# ifndef HAVE_ISINF + static inline int isinf(double x) { return !isnan(x) && isnan(x - x); } +# endif +# endif +# if !defined(INFINITY) +# if defined(DBL_MAX) +# define INFINITY (DBL_MAX+DBL_MAX) +# else +# define INFINITY (1.0 / 0.0) +# endif +# endif +# if !defined(NAN) +# define NAN (INFINITY-INFINITY) +# endif +#endif