59 lines
2.5 KiB
C
59 lines
2.5 KiB
C
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#ifndef _MSC_VER // [
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#error "Use this header only with Microsoft Visual C++ compilers!"
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#endif // _MSC_VER ]
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#ifndef _MSC_CONFIG_H_ // [
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#define _MSC_CONFIG_H_
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////////////////////////////////////////////////////////////////////////
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// enable inline functions for C code
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////////////////////////////////////////////////////////////////////////
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#ifndef __cplusplus
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# define inline __inline
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#endif
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////////////////////////////////////////////////////////////////////////
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// signed size_t
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////////////////////////////////////////////////////////////////////////
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#include <stddef.h>
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typedef ptrdiff_t ssize_t;
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////////////////////////////////////////////////////////////////////////
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// rint functions
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////////////////////////////////////////////////////////////////////////
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#include <math.h>
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static inline long lrint(double x){return (long)(x > 0.0 ? x + 0.5 : x - 0.5);}
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static inline long lrintf(float x){return (long)(x > 0.0f ? x + 0.5f : x - 0.5f);}
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static inline long long llrint(double x){return (long long)(x > 0.0 ? x + 0.5 : x - 0.5);}
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static inline long long llrintf(float x){return (long long)(x > 0.0f ? x + 0.5f : x - 0.5f);}
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static inline double rint(double x){return (x > 0.0)? floor(x + 0.5) : ceil(x - 0.5);}
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static inline float rintf(float x){return (x > 0.0f)? floorf(x + 0.5f) : ceilf(x - 0.5f);}
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////////////////////////////////////////////////////////////////////////
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// math constants
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////////////////////////////////////////////////////////////////////////
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#define INFINITY HUGE_VAL
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# define M_E 2.7182818284590452354 /* e */
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# define M_LOG2E 1.4426950408889634074 /* log_2 e */
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# define M_LOG10E 0.43429448190325182765 /* log_10 e */
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# define M_LN2 0.69314718055994530942 /* log_e 2 */
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# define M_LN10 2.30258509299404568402 /* log_e 10 */
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# define M_PI 3.14159265358979323846 /* pi */
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# define M_PI_2 1.57079632679489661923 /* pi/2 */
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# define M_PI_4 0.78539816339744830962 /* pi/4 */
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# define M_1_PI 0.31830988618379067154 /* 1/pi */
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# define M_2_PI 0.63661977236758134308 /* 2/pi */
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# define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
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# define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
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# define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
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////////////////////////////////////////////////////////////////////////
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// random and srandom
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////////////////////////////////////////////////////////////////////////
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#include <stdlib.h>
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static inline long int random (void) { return rand(); }
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static inline void srandom (unsigned int seed) { srand(seed); }
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#endif // _MSC_CONFIG_H_ ]
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