I'm trying to compile a UDF, but FLUENT is missing the math.h header file. Where can I download it?

Hi Travis, You have included udf.h in your udf ?

You can find math.h in google !!!

I have included udf.h, and that parses fine. I tried looking for math.h on google and only got descriptions of it, no downloads. Did you find it? Thanks!

Here is a copy of my math.h file, copy it and paste it in a wordpad file and save it as math.h:

/*** *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

#ifndef __assembler /* Protect from 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

/* 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

#define _COMPLEX_DEFINED #endif #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 /* Protect from assembler */ #if !defined(_M_CEE_PURE) _CRTIMP extern double _HUGE; #else const double _HUGE = System:ouble::PositiveInfinity; #endif /* !defined(_M_CEE_PURE) */ #endif /* __assembler */

#define HUGE_VAL _HUGE

/* Function prototypes */

#if !defined(__assembler) /* Protect from assembler */ #ifndef _CRT_ABS_DEFINED #define _CRT_ABS_DEFINED

int __cdecl abs(_In_ int _X);

long __cdecl labs(_In_ long _X); #endif

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

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

_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

int __cdecl _matherr(_Inout_ struct _exception * _Except); #endif #endif _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

#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 /* _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 /* _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 _CRTIMP long double __cdecl tanl(_In_ long double _X); #endif

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 /* __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 /* Protect from assembler */

#if !defined(_M_CEE_PURE) _CRTIMP extern double HUGE; #else

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 /* _USE_MATH_DEFINES */

Thanks!