以下是引用a745043791在2012-9-16 19:13:05的发言：
想看一下math.h中的库函数的源代码，于是就打开了math.h，但令我惊奇的是，里面大都是一些函数的声明，宏定义，没有找到函数的定义，唯一像样点的就只有下面这一段：
template inline
_Ty _Pow_int(_Ty _X, int _Y)
{unsigned int _N;
if (_Y >= 0)
_N = _Y;
else
_N = -_Y;
for (_Ty _Z = _Ty(1); ; _X *= _X)
{if ((_N & 1) != 0)
_Z *= _X;
if ((_N >>= 1) == 0)
return (_Y < 0 ? _Ty(1) / _Z : _Z); }}
但显然那么多的函数不可能只有这一小段代码实现，那么定义都到哪里去了？这样才能找到源代码？望大神指导。
你看的这个是C++的一个模版。。
程序代码：
/***
*math.h - definitions and declarations for math library
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file contains constant definitions and external subroutine
* declarations for the math subroutine library.
* [ANSI/System V]
*
* [Public]
*
****/
#ifndef _INC_MATH
#define _INC_MATH
#include <crtdefs.h>
#ifdef _MSC_VER
/*
* Currently, all MS C compilers for Win32 platforms default to 8 byte
* alignment.
*/
#pragma pack(push,_CRT_PACKING)
#endif /* _MSC_VER */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#ifndef __assembler
/* Definition of _exception struct - this struct is passed to the matherr
* routine when a floating point exception is detected
*/
#ifndef _EXCEPTION_DEFINED
struct _exception {
int type; /* exception type - see below */
char *name; /* name of function where error occured */
double arg1; /* first argument to function */
double arg2; /* second argument (if any) to function */
double retval; /* value to be returned by function */
} ;
#define _EXCEPTION_DEFINED
#endif /* _EXCEPTION_DEFINED */
/* Definition of a _complex struct to be used by those who use cabs and
* want type checking on their argument
*/
#ifndef _COMPLEX_DEFINED
struct _complex {
double x,y; /* real and imaginary parts */
} ;
#if !__STDC__ && !defined (__cplusplus)
/* Non-ANSI name for compatibility */
#define complex _complex
#endif /* !__STDC__ && !defined (__cplusplus) */
#define _COMPLEX_DEFINED
#endif /* _COMPLEX_DEFINED */
#endif /* __assembler */
/* Constant definitions for the exception type passed in the _exception struct
*/
#define _DOMAIN 1 /* argument domain error */
#define _SING 2 /* argument singularity */
#define _OVERFLOW 3 /* overflow range error */
#define _UNDERFLOW 4 /* underflow range error */
#define _TLOSS 5 /* total loss of precision */
#define _PLOSS 6 /* partial loss of precision */
#define EDOM 33
#define ERANGE 34
/* Definitions of _HUGE and HUGE_VAL - respectively the XENIX and ANSI names
* for a value returned in case of error by a number of the floating point
* math routines
*/
#ifndef __assembler
#if !defined (_M_CEE_PURE)
_CRTIMP extern double _HUGE;
#else /* !defined (_M_CEE_PURE) */
const double _HUGE = System::Double::PositiveInfinity;
#endif /* !defined (_M_CEE_PURE) */
#endif /* __assembler */
#define HUGE_VAL _HUGE
/* Function prototypes */
#if !defined (__assembler)
#ifndef _CRT_ABS_DEFINED
#define _CRT_ABS_DEFINED
int __cdecl abs(_In_ int _X);
long __cdecl labs(_In_ long _X);
#endif /* _CRT_ABS_DEFINED */
double __cdecl acos(_In_ double _X);
double __cdecl asin(_In_ double _X);
double __cdecl atan(_In_ double _X);
double __cdecl atan2(_In_ double _Y, _In_ double _X);
#ifndef _SIGN_DEFINED
_Check_return_ _CRTIMP double __cdecl _copysign (_In_ double _Number, _In_ double _Sign);
_Check_return_ _CRTIMP double __cdecl _chgsign (_In_ double _X);
#define _SIGN_DEFINED
#endif /* _SIGN_DEFINED */
double __cdecl cos(_In_ double _X);
double __cdecl cosh(_In_ double _X);
double __cdecl exp(_In_ double _X);
_CRT_JIT_INTRINSIC double __cdecl fabs(_In_ double _X);
double __cdecl fmod(_In_ double _X, _In_ double _Y);
double __cdecl log(_In_ double _X);
double __cdecl log10(_In_ double _X);
double __cdecl pow(_In_ double _X, _In_ double _Y);
double __cdecl sin(_In_ double _X);
double __cdecl sinh(_In_ double _X);
double __cdecl tan(_In_ double _X);
double __cdecl tanh(_In_ double _X);
double __cdecl sqrt(_In_ double _X);
#ifndef _CRT_ATOF_DEFINED
#define _CRT_ATOF_DEFINED
_Check_return_ _CRTIMP double __cdecl atof(_In_z_ const char *_String);
_Check_return_ _CRTIMP double __cdecl _atof_l(_In_z_ const char *_String, _In_opt_ _locale_t _Locale);
#endif /* _CRT_ATOF_DEFINED */
_CRTIMP double __cdecl _cabs(_In_ struct _complex _Complex_value);
_CRTIMP double __cdecl ceil(_In_ double _X);
_CRTIMP double __cdecl floor(_In_ double _X);
_CRTIMP double __cdecl frexp(_In_ double _X, _Out_ int * _Y);
_CRTIMP double __cdecl _hypot(_In_ double _X, _In_ double _Y);
_CRTIMP double __cdecl _j0(_In_ double _X );
_CRTIMP double __cdecl _j1(_In_ double _X );
_CRTIMP double __cdecl _jn(int _X, _In_ double _Y);
_CRTIMP double __cdecl ldexp(_In_ double _X, _In_ int _Y);
#ifndef _CRT_MATHERR_DEFINED
#define _CRT_MATHERR_DEFINED
#if defined (MRTDLL) || defined (_M_CEE_PURE)
int __CRTDECL _matherr(_Inout_ struct _exception * _Except);
#else /* defined (MRTDLL) || defined (_M_CEE_PURE) */
int __cdecl _matherr(_Inout_ struct _exception * _Except);
#endif /* defined (MRTDLL) || defined (_M_CEE_PURE) */
#endif /* _CRT_MATHERR_DEFINED */
_CRTIMP double __cdecl modf(_In_ double _X, _Out_ double * _Y);
_CRTIMP double __cdecl _y0(_In_ double _X);
_CRTIMP double __cdecl _y1(_In_ double _X);
_CRTIMP double __cdecl _yn(_In_ int _X, _In_ double _Y);
#if defined (_M_IX86)
_CRTIMP int __cdecl _set_SSE2_enable(_In_ int _Flag);
_CRTIMP float __cdecl _hypotf(_In_ float _X, _In_ float _Y);
#endif /* defined (_M_IX86) */
#if defined (_M_IA64)
/* ANSI C, 4.5 Mathematics */
/* 4.5.2 Trigonometric functions */
_CRTIMP float __cdecl acosf( _In_ float _X);
_CRTIMP float __cdecl asinf( _In_ float _X);
_CRTIMP float __cdecl atanf( _In_ float _X);
_CRTIMP float __cdecl atan2f( _In_ float _Y, float _X);
_CRTIMP float __cdecl cosf( _In_ float _X);
_CRTIMP float __cdecl sinf( _In_ float _X);
_CRTIMP float __cdecl tanf( _In_ float _X);
/* 4.5.3 Hyperbolic functions */
_CRTIMP float __cdecl coshf( _In_ float _X);
_CRTIMP float __cdecl sinhf( _In_ float _X);
_CRTIMP float __cdecl tanhf( _In_ float _X);
/* 4.5.4 Exponential and logarithmic functions */
_CRTIMP float __cdecl expf( _In_ float _X);
_CRTIMP float __cdecl logf( _In_ float _X);
_CRTIMP float __cdecl log10f( _In_ float _X);
_CRTIMP float __cdecl modff( float _X, _Out_ float* _Y);
/* 4.5.5 Power functions */
_CRTIMP float __cdecl powf( _In_ float _Base, _In_ float _Exp);
_CRTIMP float __cdecl sqrtf( _In_ float _X);
/* 4.5.6 Nearest integer, absolute value, and remainder functions */
_CRTIMP float __cdecl ceilf( _In_ float _X);
_CRT_JIT_INTRINSIC _CRTIMP float __cdecl fabsf( _In_ float _X);
_CRTIMP float __cdecl floorf( _In_ float _X);
_CRTIMP float __cdecl fmodf( _In_ float _X, _In_ float _Y);
_CRTIMP float __cdecl _hypotf(_In_ float _X, _In_ float _Y);
_CRTIMP float __cdecl ldexpf(_In_ float _X, _In_ int _Y);
#endif /* defined (_M_IA64) */
#if defined (_M_AMD64)
/* ANSI C, 4.5 Mathematics */
/* 4.5.2 Trigonometric functions */
_CRTIMP float __cdecl acosf( _In_ float _X);
_CRTIMP float __cdecl asinf( _In_ float _X);
_CRTIMP float __cdecl atanf( _In_ float _X);
_CRTIMP float __cdecl atan2f( _In_ float _Y, _In_ float _X);
_CRTIMP float __cdecl cosf( _In_ float _X);
_CRTIMP float __cdecl sinf( _In_ float _X);
_CRTIMP float __cdecl tanf( _In_ float _X);
/* 4.5.3 Hyperbolic functions */
_CRTIMP float __cdecl coshf( _In_ float _X);
_CRTIMP float __cdecl sinhf( _In_ float _X);
_CRTIMP float __cdecl tanhf( _In_ float _X);
/* 4.5.4 Exponential and logarithmic functions */
_CRTIMP float __cdecl expf( _In_ float _X);
_CRTIMP float __cdecl logf( _In_ float _X);
_CRTIMP float __cdecl log10f( _In_ float _X);
_CRTIMP float __cdecl modff( _In_ float _X, _Out_ float* _Y);
/* 4.5.5 Power functions */
_CRTIMP float __cdecl powf( _In_ float _X, _In_ float _Y);
_CRTIMP float __cdecl sqrtf( _In_ float _X);
/* 4.5.6 Nearest integer, absolute value, and remainder functions */
_CRTIMP float __cdecl ceilf( _In_ float _X);
_CRTIMP float __cdecl floorf( _In_ float _X);
_CRTIMP float __cdecl fmodf( _In_ float _X, _In_ float _Y);
_CRTIMP float __cdecl _hypotf(_In_ float _X, _In_ float _Y);
_CRTIMP float __cdecl _copysignf (_In_ float _Number, _In_ float _Sign);
_CRTIMP float __cdecl _chgsignf (_In_ float _X);
_CRTIMP float __cdecl _logbf(_In_ float _X);
_CRTIMP float __cdecl _nextafterf(_In_ float _X, _In_ float _Y);
_CRTIMP int __cdecl _finitef(_In_ float _X);
_CRTIMP int __cdecl _isnanf(_In_ float _X);
_CRTIMP int __cdecl _fpclassf(_In_ float _X);
#endif /* defined (_M_AMD64) */
/* Macros defining long double functions to be their double counterparts
* (long double is synonymous with double in this implementation).
*/
#ifndef __cplusplus
#define acosl(x) ((long double)acos((double)(x)))
#define asinl(x) ((long double)asin((double)(x)))
#define atanl(x) ((long double)atan((double)(x)))
#define atan2l(y,x) ((long double)atan2((double)(y), (double)(x)))
#define ceill(x) ((long double)ceil((double)(x)))
#define cosl(x) ((long double)cos((double)(x)))
#define coshl(x) ((long double)cosh((double)(x)))
#define expl(x) ((long double)exp((double)(x)))
#define fabsl(x) ((long double)fabs((double)(x)))
#define floorl(x) ((long double)floor((double)(x)))
#define fmodl(x,y) ((long double)fmod((double)(x), (double)(y)))
#define frexpl(x,y) ((long double)frexp((double)(x), (y)))
#define _hypotl(x,y) ((long double)_hypot((double)(x), (double)(y)))
#define ldexpl(x,y) ((long double)ldexp((double)(x), (y)))
#define logl(x) ((long double)log((double)(x)))
#define log10l(x) ((long double)log10((double)(x)))
#define _matherrl _matherr
#define modfl(x,y) ((long double)modf((double)(x), (double *)(y)))
#define powl(x,y) ((long double)pow((double)(x), (double)(y)))
#define sinl(x) ((long double)sin((double)(x)))
#define sinhl(x) ((long double)sinh((double)(x)))
#define sqrtl(x) ((long double)sqrt((double)(x)))
#define tanl(x) ((long double)tan((double)(x)))
#define tanhl(x) ((long double)tanh((double)(x)))
#define _chgsignl(x) ((long double)_chgsign((double)(x)))
#define _copysignl(x,y) ((long double)_copysign((double)(x), (double)(y)))
#define frexpf(x,y) ((float)frexp((double)(x),(y)))
#if !defined (_M_IA64)
#define fabsf(x) ((float)fabs((double)(x)))
#define ldexpf(x,y) ((float)ldexp((double)(x),(y)))
#if !defined (_M_AMD64)
#define acosf(x) ((float)acos((double)(x)))
#define asinf(x) ((float)asin((double)(x)))
#define atanf(x) ((float)atan((double)(x)))
#define atan2f(y,x) ((float)atan2((double)(y), (double)(x)))
#define ceilf(x) ((float)ceil((double)(x)))
#define cosf(x) ((float)cos((double)(x)))
#define coshf(x) ((float)cosh((double)(x)))
#define expf(x) ((float)exp((double)(x)))
#define floorf(x) ((float)floor((double)(x)))
#define fmodf(x,y) ((float)fmod((double)(x), (double)(y)))
#define logf(x) ((float)log((double)(x)))
#define log10f(x) ((float)log10((double)(x)))
#define modff(x,y) ((float)modf((double)(x), (double *)(y)))
#define powf(x,y) ((float)pow((double)(x), (double)(y)))
#define sinf(x) ((float)sin((double)(x)))
#define sinhf(x) ((float)sinh((double)(x)))
#define sqrtf(x) ((float)sqrt((double)(x)))
#define tanf(x) ((float)tan((double)(x)))
#define tanhf(x) ((float)tanh((double)(x)))
#endif /* !defined (_M_AMD64) */
#endif /* !defined (_M_IA64) */
#else /* __cplusplus */
inline long double acosl(_In_ long double _X)
{return (acos((double)_X)); }
inline long double asinl(_In_ long double _X)
{return (asin((double)_X)); }
inline long double atanl(_In_ long double _X)
{return (atan((double)_X)); }
inline long double atan2l(_In_ long double _Y, _In_ long double _X)
{return (atan2((double)_Y, (double)_X)); }
inline long double ceill(_In_ long double _X)
{return (ceil((double)_X)); }
inline long double cosl(_In_ long double _X)
{return (cos((double)_X)); }
inline long double coshl(_In_ long double _X)
{return (cosh((double)_X)); }
inline long double expl(_In_ long double _X)
{return (exp((double)_X)); }
inline long double fabsl(_In_ long double _X)
{return (fabs((double)_X)); }
inline long double floorl(_In_ long double _X)
{return (floor((double)_X)); }
inline long double fmodl(_In_ long double _X, _In_ long double _Y)
{return (fmod((double)_X, (double)_Y)); }
inline long double frexpl(_In_ long double _X, _Out_ int *_Y)
{return (frexp((double)_X, _Y)); }
inline long double ldexpl(_In_ long double _X, _In_ int _Y)
{return (ldexp((double)_X, _Y)); }
inline long double logl(_In_ long double _X)
{return (log((double)_X)); }
inline long double log10l(_In_ long double _X)
{return (log10((double)_X)); }
inline long double modfl(_In_ long double _X, _Out_ long double *_Y)
{double _Di, _Df = modf((double)_X, &_Di);
*_Y = (long double)_Di;
return (_Df); }
inline long double powl(_In_ long double _X, _In_ long double _Y)
{return (pow((double)_X, (double)_Y)); }
inline long double sinl(_In_ long double _X)
{return (sin((double)_X)); }
inline long double sinhl(_In_ long double _X)
{return (sinh((double)_X)); }
inline long double sqrtl(_In_ long double _X)
{return (sqrt((double)_X)); }
#ifndef _M_IA64
inline long double tanl(_In_ long double _X)
{return (tan((double)_X)); }
#else /* _M_IA64 */
_CRTIMP long double __cdecl tanl(_In_ long double _X);
#endif /* _M_IA64 */
inline long double tanhl(_In_ long double _X)
{return (tanh((double)_X)); }
inline long double _chgsignl(_In_ long double _Number)
{
return _chgsign(static_cast<double>(_Number));
}
inline long double _copysignl(_In_ long double _Number, _In_ long double _Sign)
{
return _copysign(static_cast<double>(_Number), static_cast<double>(_Sign));
}
inline float frexpf(_In_ float _X, _Out_ int *_Y)
{return ((float)frexp((double)_X, _Y)); }
#if !defined (_M_IA64)
inline float fabsf(_In_ float _X)
{return ((float)fabs((double)_X)); }
inline float ldexpf(_In_ float _X, _In_ int _Y)
{return ((float)ldexp((double)_X, _Y)); }
#if !defined (_M_AMD64)
inline float acosf(_In_ float _X)
{return ((float)acos((double)_X)); }
inline float asinf(_In_ float _X)
{return ((float)asin((double)_X)); }
inline float atanf(_In_ float _X)
{return ((float)atan((double)_X)); }
inline float atan2f(_In_ float _Y, _In_ float _X)
{return ((float)atan2((double)_Y, (double)_X)); }
inline float ceilf(_In_ float _X)
{return ((float)ceil((double)_X)); }
inline float cosf(_In_ float _X)
{return ((float)cos((double)_X)); }
inline float coshf(_In_ float _X)
{return ((float)cosh((double)_X)); }
inline float expf(_In_ float _X)
{return ((float)exp((double)_X)); }
inline float floorf(_In_ float _X)
{return ((float)floor((double)_X)); }
inline float fmodf(_In_ float _X, _In_ float _Y)
{return ((float)fmod((double)_X, (double)_Y)); }
inline float logf(_In_ float _X)
{return ((float)log((double)_X)); }
inline float log10f(_In_ float _X)
{return ((float)log10((double)_X)); }
inline float modff(_In_ float _X, _Out_ float *_Y)
{ double _Di, _Df = modf((double)_X, &_Di);
*_Y = (float)_Di;
return ((float)_Df); }
inline float powf(_In_ float _X, _In_ float _Y)
{return ((float)pow((double)_X, (double)_Y)); }
inline float sinf(_In_ float _X)
{return ((float)sin((double)_X)); }
inline float sinhf(_In_ float _X)
{return ((float)sinh((double)_X)); }
inline float sqrtf(_In_ float _X)
{return ((float)sqrt((double)_X)); }
inline float tanf(_In_ float _X)
{return ((float)tan((double)_X)); }
inline float tanhf(_In_ float _X)
{return ((float)tanh((double)_X)); }
#endif /* !defined (_M_AMD64) */
#endif /* !defined (_M_IA64) */
#endif /* __cplusplus */
#endif /* !defined (__assembler) */
#if !__STDC__
/* Non-ANSI names for compatibility */
#define DOMAIN _DOMAIN
#define SING _SING
#define OVERFLOW _OVERFLOW
#define UNDERFLOW _UNDERFLOW
#define TLOSS _TLOSS
#define PLOSS _PLOSS
#define matherr _matherr
#ifndef __assembler
#if !defined (_M_CEE_PURE)
_CRTIMP extern double HUGE;
#else /* !defined (_M_CEE_PURE) */
const double HUGE = _HUGE;
#endif /* !defined (_M_CEE_PURE) */
_CRT_NONSTDC_DEPRECATE(_cabs) _CRTIMP double __cdecl cabs(_In_ struct _complex _X);
_CRT_NONSTDC_DEPRECATE(_hypot) _CRTIMP double __cdecl hypot(_In_ double _X, _In_ double _Y);
_CRT_NONSTDC_DEPRECATE(_j0) _CRTIMP double __cdecl j0(_In_ double _X);
_CRT_NONSTDC_DEPRECATE(_j1) _CRTIMP double __cdecl j1(_In_ double _X);
_CRT_NONSTDC_DEPRECATE(_jn) _CRTIMP double __cdecl jn(_In_ int _X, _In_ double _Y);
_CRT_NONSTDC_DEPRECATE(_y0) _CRTIMP double __cdecl y0(_In_ double _X);
_CRT_NONSTDC_DEPRECATE(_y1) _CRTIMP double __cdecl y1(_In_ double _X);
_CRT_NONSTDC_DEPRECATE(_yn) _CRTIMP double __cdecl yn(_In_ int _X, _In_ double _Y);
#endif /* __assembler */
#endif /* !__STDC__ */
#ifdef __cplusplus
}
extern "C++" {
template<class _Ty> inline
_Ty _Pow_int(_Ty _X, int _Y)
{unsigned int _N;
if (_Y >= 0)
_N = (unsigned int)_Y;
else
_N = (unsigned int)(-_Y);
for (_Ty _Z = _Ty(1); ; _X *= _X)
{if ((_N & 1) != 0)
_Z *= _X;
if ((_N >>= 1) == 0)
return (_Y < 0 ? _Ty(1) / _Z : _Z); }}
inline long __CRTDECL abs(_In_ long _X)
{return (labs(_X)); }
inline double __CRTDECL abs(_In_ double _X)
{return (fabs(_X)); }
inline double __CRTDECL pow(_In_ double _X, _In_ int _Y)
{return (_Pow_int(_X, _Y)); }
inline float __CRTDECL abs(_In_ float _X)
{return (fabsf(_X)); }
inline float __CRTDECL acos(_In_ float _X)
{return (acosf(_X)); }
inline float __CRTDECL asin(_In_ float _X)
{return (asinf(_X)); }
inline float __CRTDECL atan(_In_ float _X)
{return (atanf(_X)); }
inline float __CRTDECL atan2(_In_ float _Y, _In_ float _X)
{return (atan2f(_Y, _X)); }
inline float __CRTDECL ceil(_In_ float _X)
{return (ceilf(_X)); }
inline float __CRTDECL cos(_In_ float _X)
{return (cosf(_X)); }
inline float __CRTDECL cosh(_In_ float _X)
{return (coshf(_X)); }
inline float __CRTDECL exp(_In_ float _X)
{return (expf(_X)); }
inline float __CRTDECL fabs(_In_ float _X)
{return (fabsf(_X)); }
inline float __CRTDECL floor(_In_ float _X)
{return (floorf(_X)); }
inline float __CRTDECL fmod(_In_ float _X, _In_ float _Y)
{return (fmodf(_X, _Y)); }
inline float __CRTDECL frexp(_In_ float _X, _Out_ int * _Y)
{return (frexpf(_X, _Y)); }
inline float __CRTDECL ldexp(_In_ float _X, _In_ int _Y)
{return (ldexpf(_X, _Y)); }
inline float __CRTDECL log(_In_ float _X)
{return (logf(_X)); }
inline float __CRTDECL log10(_In_ float _X)
{return (log10f(_X)); }
inline float __CRTDECL modf(_In_ float _X, _Out_ float * _Y)
{return (modff(_X, _Y)); }
inline float __CRTDECL pow(_In_ float _X, _In_ float _Y)
{return (powf(_X, _Y)); }
inline float __CRTDECL pow(_In_ float _X, _In_ int _Y)
{return (_Pow_int(_X, _Y)); }
inline float __CRTDECL sin(_In_ float _X)
{return (sinf(_X)); }
inline float __CRTDECL sinh(_In_ float _X)
{return (sinhf(_X)); }
inline float __CRTDECL sqrt(_In_ float _X)
{return (sqrtf(_X)); }
inline float __CRTDECL tan(_In_ float _X)
{return (tanf(_X)); }
inline float __CRTDECL tanh(_In_ float _X)
{return (tanhf(_X)); }
inline long double __CRTDECL abs(_In_ long double _X)
{return (fabsl(_X)); }
inline long double __CRTDECL acos(_In_ long double _X)
{return (acosl(_X)); }
inline long double __CRTDECL asin(_In_ long double _X)
{return (asinl(_X)); }
inline long double __CRTDECL atan(_In_ long double _X)
{return (atanl(_X)); }
inline long double __CRTDECL atan2(_In_ long double _Y, _In_ long double _X)
{return (atan2l(_Y, _X)); }
inline long double __CRTDECL ceil(_In_ long double _X)
{return (ceill(_X)); }
inline long double __CRTDECL cos(_In_ long double _X)
{return (cosl(_X)); }
inline long double __CRTDECL cosh(_In_ long double _X)
{return (coshl(_X)); }
inline long double __CRTDECL exp(_In_ long double _X)
{return (expl(_X)); }
inline long double __CRTDECL fabs(_In_ long double _X)
{return (fabsl(_X)); }
inline long double __CRTDECL floor(_In_ long double _X)
{return (floorl(_X)); }
inline long double __CRTDECL fmod(_In_ long double _X, _In_ long double _Y)
{return (fmodl(_X, _Y)); }
inline long double __CRTDECL frexp(_In_ long double _X, _Out_ int * _Y)
{return (frexpl(_X, _Y)); }
inline long double __CRTDECL ldexp(_In_ long double _X, _In_ int _Y)
{return (ldexpl(_X, _Y)); }
inline long double __CRTDECL log(_In_ long double _X)
{return (logl(_X)); }
inline long double __CRTDECL log10(_In_ long double _X)
{return (log10l(_X)); }
inline long double __CRTDECL modf(_In_ long double _X, _Out_ long double * _Y)
{return (modfl(_X, _Y)); }
inline long double __CRTDECL pow(_In_ long double _X, _In_ long double _Y)
{return (powl(_X, _Y)); }
inline long double __CRTDECL pow(_In_ long double _X, _In_ int _Y)
{return (_Pow_int(_X, _Y)); }
inline long double __CRTDECL sin(_In_ long double _X)
{return (sinl(_X)); }
inline long double __CRTDECL sinh(_In_ long double _X)
{return (sinhl(_X)); }
inline long double __CRTDECL sqrt(_In_ long double _X)
{return (sqrtl(_X)); }
inline long double __CRTDECL tan(_In_ long double _X)
{return (tanl(_X)); }
inline long double __CRTDECL tanh(_In_ long double _X)
{return (tanhl(_X)); }
}
#endif /* __cplusplus */
#ifdef _MSC_VER
#pragma pack(pop)
#endif /* _MSC_VER */
#endif /* _INC_MATH */
#if defined (_USE_MATH_DEFINES) && !defined (_MATH_DEFINES_DEFINED)
#define _MATH_DEFINES_DEFINED
/* Define _USE_MATH_DEFINES before including math.h to expose these macro
* definitions for common math constants. These are placed under an #ifdef
* since these commonly-defined names are not part of the C/C++ standards.
*/
/* Definitions of useful mathematical constants
* M_E - e
* M_LOG2E - log2(e)
* M_LOG10E - log10(e)
* M_LN2 - ln(2)
* M_LN10 - ln(10)
* M_PI - pi
* M_PI_2 - pi/2
* M_PI_4 - pi/4
* M_1_PI - 1/pi
* M_2_PI - 2/pi
* M_2_SQRTPI - 2/sqrt(pi)
* M_SQRT2 - sqrt(2)
* M_SQRT1_2 - 1/sqrt(2)
*/
#define M_E 2.71828182845904523536
#define M_LOG2E 1.44269504088896340736
#define M_LOG10E 0.434294481903251827651
#define M_LN2 0.693147180559945309417
#define M_LN10 2.30258509299404568402
#define M_PI 3.14159265358979323846
#define M_PI_2 1.57079632679489661923
#define M_PI_4 0.785398163397448309616
#define M_1_PI 0.318309886183790671538
#define M_2_PI 0.636619772367581343076
#define M_2_SQRTPI 1.12837916709551257390
#define M_SQRT2 1.41421356237309504880
#define M_SQRT1_2 0.707106781186547524401
#endif /* defined (_USE_MATH_DEFINES) && !defined (_MATH_DEFINES_DEFINED) */
上面的这个是VS2008带的运行时的math.h文件
2012-09-16 19:13
厉害
强！！！
