matplotlib Code

/*

These definitions were inspired by and originally modified from
numarray's Include/numarray/nummacro.h

The "64" below refers to double precision floating point numbers. This
code only works on doubles.

*/

#ifdef _ISOC99_SOURCE
#include <stdint.h>
#endif

#if defined(_MSC_VER)
typedef __int64                  MPL_Int64;
#else
#if defined(_ISOC99_SOURCE)
typedef int64_t                  MPL_Int64;
#else
typedef long long                MPL_Int64;
#endif
#endif

#if !defined(MPL_U64)
#define MPL_U64(u) (* (MPL_Int64 *) &(u) )
#endif /* MPL_U64 */

#if !defined(MPL_isnan64)
#if !defined(_MSC_VER)
#define MPL_isnan64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000LL)  == 0x7ff0000000000000LL)  && ((MPL_U64(u) &  0x000fffffffffffffLL) != 0)) ? 1:0
#else
#define MPL_isnan64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000i64) == 0x7ff0000000000000i64)  && ((MPL_U64(u) & 0x000fffffffffffffi64) != 0)) ? 1:0
#endif
#endif /* MPL_isnan64 */

#if !defined(MPL_isinf64)
#if !defined(_MSC_VER)
#define MPL_isinf64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000LL)  == 0x7ff0000000000000LL)  && ((MPL_U64(u) &  0x000fffffffffffffLL) == 0)) ? 1:0
#else
#define MPL_isinf64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000i64) == 0x7ff0000000000000i64)  && ((MPL_U64(u) & 0x000fffffffffffffi64) == 0)) ? 1:0
#endif
#endif /* MPL_isinf64 */

#if !defined(MPL_isfinite64)
#if !defined(_MSC_VER)
#define MPL_isfinite64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000LL)  != 0x7ff0000000000000LL)) ? 1:0
#else
#define MPL_isfinite64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000i64) != 0x7ff0000000000000i64)) ? 1:0
#endif
#endif /* MPL_isfinite64 */

#if !defined(MPL_notisfinite64)
#if !defined(_MSC_VER)
#define MPL_notisfinite64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000LL)  == 0x7ff0000000000000LL)) ? 1:0
#else
#define MPL_notisfinite64(u) \
  ( (( MPL_U64(u) & 0x7ff0000000000000i64) == 0x7ff0000000000000i64)) ? 1:0
#endif
#endif /* MPL_notisfinite64 */