?? math.h
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/********************************************************************//* math.h v7.00 *//* Copyright (c) 1990-1996 Texas Instruments Incorporated *//********************************************************************/#ifndef _MATH#define _MATH#ifdef _INLINE#define __INLINE static inline#else#define __INLINE#endif#define HUGE_VAL 3.40232347E+38F/***************************************************************//* FUNCTION DECLARATIONS. *//***************************************************************/ double asin(double _x); double acos(double _x); double atan(double _x); double atan2(double _y, double _x);__INLINE double ceil(double _x); double cos(double _x); double cosh(double _x); double exp(double _x); double fabs(double _x);__INLINE double floor(double _x);__INLINE double fmod(double _x, double _y); double frexp(double _x, int *_exp); double ldexp(double _x, int _exp); double log(double _x); double log10(double _x); double modf(double _x, double *_iptr); double pow(double _x, double _y); double sin(double _x); double sinh(double _x); double sqrt(double _x); double tan(double _x); double tanh(double _x);#ifdef _INLINE/****************************************************************************//* ceil() *//****************************************************************************/static inline double ceil(double x){ double y; return (modf(x, &y) > 0 ? y + 1.0 : y);}/****************************************************************************//* floor() *//****************************************************************************/static inline double floor(double x){ double y; return (modf(x, &y) < 0 ? y - 1.0 : y);}/****************************************************************************//* fmod() *//****************************************************************************/static inline double fmod(double x, double y){ double d = fabs(x); if (d - fabs(y) == d) return (0.0); modf(x/y, &d); return (x - d * y);}#endif /* _INLINE */#undef __INLINE#endif /* _MATH */?? 快捷鍵說明
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