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Diffstat (limited to 'comm/third_party/json-c/math_compat.h')
-rw-r--r-- | comm/third_party/json-c/math_compat.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/comm/third_party/json-c/math_compat.h b/comm/third_party/json-c/math_compat.h new file mode 100644 index 0000000000..2382fe15b3 --- /dev/null +++ b/comm/third_party/json-c/math_compat.h @@ -0,0 +1,43 @@ +#ifndef __math_compat_h +#define __math_compat_h + +/** + * @file + * @brief Do not use, json-c internal, may be changed or removed at any time. + */ + +/* Define isnan, isinf, infinity and nan on Windows/MSVC */ + +#ifndef HAVE_DECL_ISNAN +#ifdef HAVE_DECL__ISNAN +#include <float.h> +#define isnan(x) _isnan(x) +#else +/* On platforms like AIX and "IBM i" we need to provide our own isnan */ +#define isnan(x) ((x) != (x)) +#endif +#endif + +#ifndef HAVE_DECL_ISINF +#ifdef HAVE_DECL__FINITE +#include <float.h> +#define isinf(x) (!_finite(x)) +#else +#include <float.h> +/* On platforms like AIX and "IBM i" we need to provide our own isinf */ +#define isinf(x) ((x) < -DBL_MAX || (x) > DBL_MAX) +#endif +#endif + +#ifndef HAVE_DECL_INFINITY +#include <float.h> +#define INFINITY (DBL_MAX + DBL_MAX) +#define HAVE_DECL_INFINITY +#endif + +#ifndef HAVE_DECL_NAN +#define NAN (INFINITY - INFINITY) +#define HAVE_DECL_NAN +#endif + +#endif |