Problème compilation fabsf sous VS2003

**parisjohn** · 17/11/2009, 11h51

Bonjour,
Avec VS2003 j'ai un warning de compilation avec fabsf alors que j'ai bien inclus math.h

Code :

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warning C4013: 'fabsf' undefined; assuming extern returning int

dans le math.h on a float _cdlecl fabsf(float) que pour le C++ et pour certains flags mais pas en C

Bien sur j'ai le même problème avec toutes les fonctions en floattants
Par contre sur VS2005 pas de problème
Merci d'avance de votre aide
J

**jeroman** · 17/11/2009, 12h10

Pour les fonctions mathématiques, il ne faut pas oublier de rajouter la librairie en question dans les options de compilation (-lm).

**parisjohn** · 17/11/2009, 12h13

pourtant fabs compile et link sans cette option
edit : ca n'a rien changé
Ce qui me parait bizarre c'est les definitions dans le math.h
les fonctions en float ne sont pas définis hors C++ et autre options...
Si je modifie a la main le math.h j'arrive a compiler et linker mais j'aimerais une solution plus propre
Merci d'avance

**Vincent Rogier** · 17/11/2009, 14h08

Envoyé par jeroman

Pour les fonctions mathématiques, il ne faut pas oublier de rajouter la librairie en question dans les options de compilation (-lm).

Hors sujet pour VS2003 pour qui toute la lib C est incluse dans le runtime MSVC

sinon, sous 2008, fabsf est définie, pour du code compilé comme code C, comme une fonction pour les archi 64bits et comme macro pour le 32bits...

Je n'ai plus de VS2003 sous la main pour voir le contenu du math.h livré avec...

**parisjohn** · 17/11/2009, 14h17

En fait dans math.h du VS2003 fabsf et autre fonction float sont définis uniquement sous certaines macro ou si on est en C++, rien dans le cas classique
Si je compile avec ces macros ca me crée des conflits avec mes autres fichiers...
Il doit bien y avoir le moyen de compiler de base ces fonctions sans avoir besoin de les redéfinir

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/***
*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]
*
****/
 
#if     _MSC_VER > 1000
#pragma once
#endif
 
#ifndef _INC_MATH
#define _INC_MATH
 
#if     !defined(_WIN32)
#error ERROR: Only Win32 target supported!
#endif
 
 
#ifdef  _MSC_VER
/*
 * Currently, all MS C compilers for Win32 platforms default to 8 byte
 * alignment.
 */
#pragma pack(push,8)
#endif  /* _MSC_VER */
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifndef __assembler /* Protect from assembler */
 
/* Define _CRTIMP */
 
#ifndef _CRTIMP
#ifdef  _DLL
#define _CRTIMP __declspec(dllimport)
#else   /* ndef _DLL */
#define _CRTIMP
#endif  /* _DLL */
#endif  /* _CRTIMP */
 
 
/* Define __cdecl for non-Microsoft compilers */
 
#if     ( !defined(_MSC_VER) && !defined(__cdecl) )
#define __cdecl
#endif
 
 
/* 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 */
_CRTIMP extern double _HUGE;
#endif  /* __assembler */
 
#define HUGE_VAL _HUGE
 
#ifdef  _USE_MATH_DEFINES
 
/* 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 */
 
/* Function prototypes */
 
#if     !defined(__assembler)   /* Protect from assembler */
#if     defined(_M_MRX000)
_CRTIMP int     __cdecl abs(int);
_CRTIMP double  __cdecl acos(double);
_CRTIMP double  __cdecl asin(double);
_CRTIMP double  __cdecl atan(double);
_CRTIMP double  __cdecl atan2(double, double);
_CRTIMP double  __cdecl cos(double);
_CRTIMP double  __cdecl cosh(double);
_CRTIMP double  __cdecl exp(double);
_CRTIMP double  __cdecl fabs(double);
_CRTIMP double  __cdecl fmod(double, double);
_CRTIMP long    __cdecl labs(long);
_CRTIMP double  __cdecl log(double);
_CRTIMP double  __cdecl log10(double);
_CRTIMP double  __cdecl pow(double, double);
_CRTIMP double  __cdecl sin(double);
_CRTIMP double  __cdecl sinh(double);
_CRTIMP double  __cdecl tan(double);
_CRTIMP double  __cdecl tanh(double);
_CRTIMP double  __cdecl sqrt(double);
#else
        int     __cdecl abs(int);
        double  __cdecl acos(double);
        double  __cdecl asin(double);
        double  __cdecl atan(double);
        double  __cdecl atan2(double, double);
        double  __cdecl cos(double);
        double  __cdecl cosh(double);
        double  __cdecl exp(double);
        double  __cdecl fabs(double);
        double  __cdecl fmod(double, double);
        long    __cdecl labs(long);
        double  __cdecl log(double);
        double  __cdecl log10(double);
        double  __cdecl pow(double, double);
        double  __cdecl sin(double);
        double  __cdecl sinh(double);
        double  __cdecl tan(double);
        double  __cdecl tanh(double);
        double  __cdecl sqrt(double);
#endif
_CRTIMP double  __cdecl atof(const char *);
_CRTIMP double  __cdecl _cabs(struct _complex);
#if     defined(_M_ALPHA)
        double  __cdecl ceil(double);
        double  __cdecl floor(double);
#else
_CRTIMP double  __cdecl ceil(double);
_CRTIMP double  __cdecl floor(double);
#endif
_CRTIMP double  __cdecl frexp(double, int *);
_CRTIMP double  __cdecl _hypot(double, double);
_CRTIMP double  __cdecl _j0(double);
_CRTIMP double  __cdecl _j1(double);
_CRTIMP double  __cdecl _jn(int, double);
_CRTIMP double  __cdecl ldexp(double, int);
        int     __cdecl _matherr(struct _exception *);
_CRTIMP double  __cdecl modf(double, double *);
 
_CRTIMP double  __cdecl _y0(double);
_CRTIMP double  __cdecl _y1(double);
_CRTIMP double  __cdecl _yn(int, double);
 
 
#if     defined(_M_IX86)
 
_CRTIMP int     __cdecl _set_SSE2_enable(int);
 
#endif
 
#if     defined(_M_MRX000)
 
/* MIPS fast prototypes for float */
/* ANSI C, 4.5 Mathematics        */
 
/* 4.5.2 Trigonometric functions */
 
_CRTIMP float  __cdecl acosf( float );
_CRTIMP float  __cdecl asinf( float );
_CRTIMP float  __cdecl atanf( float );
_CRTIMP float  __cdecl atan2f( float , float );
_CRTIMP float  __cdecl cosf( float );
_CRTIMP float  __cdecl sinf( float );
_CRTIMP float  __cdecl tanf( float );
 
/* 4.5.3 Hyperbolic functions */
_CRTIMP float  __cdecl coshf( float );
_CRTIMP float  __cdecl sinhf( float );
_CRTIMP float  __cdecl tanhf( float );
 
/* 4.5.4 Exponential and logarithmic functions */
_CRTIMP float  __cdecl expf( float );
_CRTIMP float  __cdecl logf( float );
_CRTIMP float  __cdecl log10f( float );
_CRTIMP float  __cdecl modff( float , float* );
 
/* 4.5.5 Power functions */
_CRTIMP float  __cdecl powf( float , float );
        float  __cdecl sqrtf( float );
 
/* 4.5.6 Nearest integer, absolute value, and remainder functions */
        float  __cdecl ceilf( float );
        float  __cdecl fabsf( float );
        float  __cdecl floorf( float );
_CRTIMP float  __cdecl fmodf( float , float );
 
_CRTIMP float  __cdecl hypotf(float, float);
 
#endif  /* _M_MRX000 */
 
#if     defined(_M_ALPHA)
 
/* ALPHA fast prototypes for float */
/* ANSI C, 4.5 Mathematics        */
 
/* 4.5.2 Trigonometric functions */
 
        float  __cdecl acosf( float );
        float  __cdecl asinf( float );
        float  __cdecl atanf( float );
        float  __cdecl atan2f( float , float );
        float  __cdecl cosf( float );
        float  __cdecl sinf( float );
        float  __cdecl tanf( float );
 
/* 4.5.3 Hyperbolic functions */
        float  __cdecl coshf( float );
        float  __cdecl sinhf( float );
        float  __cdecl tanhf( float );
 
/* 4.5.4 Exponential and logarithmic functions */
        float  __cdecl expf( float );
        float  __cdecl logf( float );
        float  __cdecl log10f( float );
_CRTIMP float  __cdecl modff( float , float* );
 
/* 4.5.5 Power functions */
        float  __cdecl powf( float , float );
        float  __cdecl sqrtf( float );
 
/* 4.5.6 Nearest integer, absolute value, and remainder functions */
        float  __cdecl ceilf( float );
        float  __cdecl fabsf( float );
        float  __cdecl floorf( float );
        float  __cdecl fmodf( float , float );
 
_CRTIMP float  __cdecl _hypotf(float, float);
 
#endif  /* _M_ALPHA */
 
#if defined(_M_IA64)
 
/* ANSI C, 4.5 Mathematics        */
 
/* 4.5.2 Trigonometric functions */
 
        float  __cdecl acosf( float );
        float  __cdecl asinf( float );
        float  __cdecl atanf( float );
        float  __cdecl atan2f( float , float );
        float  __cdecl cosf( float );
        float  __cdecl sinf( float );
        float  __cdecl tanf( float );
 
/* 4.5.3 Hyperbolic functions */
        float  __cdecl coshf( float );
        float  __cdecl sinhf( float );
        float  __cdecl tanhf( float );
 
/* 4.5.4 Exponential and logarithmic functions */
        float  __cdecl expf( float );
        float  __cdecl logf( float );
        float  __cdecl log10f( float );
        float  __cdecl modff( float , float* );
 
/* 4.5.5 Power functions */
        float  __cdecl powf( float , float );
        float  __cdecl sqrtf( float );
 
/* 4.5.6 Nearest integer, absolute value, and remainder functions */
        float  __cdecl ceilf( float );
        float  __cdecl fabsf( float );
        float  __cdecl floorf( float );
        float  __cdecl fmodf( float , float );
 
        float  __cdecl hypotf(float, float);
 
#endif /* _M_IA64 */
 
/* 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(x,y) ((long double)atan2((double)(x), (double)(y)))
#define _cabsl      _cabs
#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)))
#else   /* __cplusplus */
inline long double acosl(long double _X)
        {return (acos((double)_X)); }
inline long double asinl(long double _X)
        {return (asin((double)_X)); }
inline long double atanl(long double _X)
        {return (atan((double)_X)); }
inline long double atan2l(long double _X, long double _Y)
        {return (atan2((double)_X, (double)_Y)); }
inline long double ceill(long double _X)
        {return (ceil((double)_X)); }
inline long double cosl(long double _X)
        {return (cos((double)_X)); }
inline long double coshl(long double _X)
        {return (cosh((double)_X)); }
inline long double expl(long double _X)
        {return (exp((double)_X)); }
inline long double fabsl(long double _X)
        {return (fabs((double)_X)); }
inline long double floorl(long double _X)
        {return (floor((double)_X)); }
inline long double fmodl(long double _X, long double _Y)
        {return (fmod((double)_X, (double)_Y)); }
inline long double frexpl(long double _X, int *_Y)
        {return (frexp((double)_X, _Y)); }
inline long double ldexpl(long double _X, int _Y)
        {return (ldexp((double)_X, _Y)); }
inline long double logl(long double _X)
        {return (log((double)_X)); }
inline long double log10l(long double _X)
        {return (log10((double)_X)); }
inline long double modfl(long double _X, long double *_Y)
        {double _Di, _Df = modf((double)_X, &_Di);
        *_Y = (long double)_Di;
        return (_Df); }
inline long double powl(long double _X, long double _Y)
        {return (pow((double)_X, (double)_Y)); }
inline long double sinl(long double _X)
        {return (sin((double)_X)); }
inline long double sinhl(long double _X)
        {return (sinh((double)_X)); }
inline long double sqrtl(long double _X)
        {return (sqrt((double)_X)); }
inline long double tanl(long double _X)
        {return (tan((double)_X)); }
inline long double tanhl(long double _X)
        {return (tanh((double)_X)); }
 
inline float frexpf(float _X, int *_Y)
        {return ((float)frexp((double)_X, _Y)); }
inline float ldexpf(float _X, int _Y)
        {return ((float)ldexp((double)_X, _Y)); }
#if     !defined(_M_MRX000) && !defined(_M_ALPHA) && !defined(_M_IA64)
inline float acosf(float _X)
        {return ((float)acos((double)_X)); }
inline float asinf(float _X)
        {return ((float)asin((double)_X)); }
inline float atanf(float _X)
        {return ((float)atan((double)_X)); }
inline float atan2f(float _X, float _Y)
        {return ((float)atan2((double)_X, (double)_Y)); }
inline float ceilf(float _X)
        {return ((float)ceil((double)_X)); }
inline float cosf(float _X)
        {return ((float)cos((double)_X)); }
inline float coshf(float _X)
        {return ((float)cosh((double)_X)); }
inline float expf(float _X)
        {return ((float)exp((double)_X)); }
inline float fabsf(float _X)
        {return ((float)fabs((double)_X)); }
inline float floorf(float _X)
        {return ((float)floor((double)_X)); }
inline float fmodf(float _X, float _Y)
        {return ((float)fmod((double)_X, (double)_Y)); }
inline float logf(float _X)
        {return ((float)log((double)_X)); }
inline float log10f(float _X)
        {return ((float)log10((double)_X)); }
inline float modff(float _X, float *_Y)
        { double _Di, _Df = modf((double)_X, &_Di);
        *_Y = (float)_Di;
        return ((float)_Df); }
inline float powf(float _X, float _Y)
        {return ((float)pow((double)_X, (double)_Y)); }
inline float sinf(float _X)
        {return ((float)sin((double)_X)); }
inline float sinhf(float _X)
        {return ((float)sinh((double)_X)); }
inline float sqrtf(float _X)
        {return ((float)sqrt((double)_X)); }
inline float tanf(float _X)
        {return ((float)tan((double)_X)); }
inline float tanhf(float _X)
        {return ((float)tanh((double)_X)); }
#endif  /* !defined(_M_MRX000) && !defined(_M_ALPHA) && !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 */
 
_CRTIMP extern double HUGE;
 
_CRTIMP double  __cdecl cabs(struct _complex);
_CRTIMP double  __cdecl hypot(double, double);
_CRTIMP double  __cdecl j0(double);
_CRTIMP double  __cdecl j1(double);
_CRTIMP double  __cdecl jn(int, double);
        int     __cdecl matherr(struct _exception *);
_CRTIMP double  __cdecl y0(double);
_CRTIMP double  __cdecl y1(double);
_CRTIMP double  __cdecl yn(int, double);
 
#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 = _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); }}
 
inline long __cdecl abs(long _X)
        {return (labs(_X)); }
inline double __cdecl abs(double _X)
        {return (fabs(_X)); }
inline double __cdecl pow(double _X, int _Y)
        {return (_Pow_int(_X, _Y)); }
inline double __cdecl pow(int _X, int _Y)
        {return (_Pow_int(_X, _Y)); }
inline float __cdecl abs(float _X)
        {return (fabsf(_X)); }
inline float __cdecl acos(float _X)
        {return (acosf(_X)); }
inline float __cdecl asin(float _X)
        {return (asinf(_X)); }
inline float __cdecl atan(float _X)
        {return (atanf(_X)); }
inline float __cdecl atan2(float _Y, float _X)
        {return (atan2f(_Y, _X)); }
inline float __cdecl ceil(float _X)
        {return (ceilf(_X)); }
inline float __cdecl cos(float _X)
        {return (cosf(_X)); }
inline float __cdecl cosh(float _X)
        {return (coshf(_X)); }
inline float __cdecl exp(float _X)
        {return (expf(_X)); }
inline float __cdecl fabs(float _X)
        {return (fabsf(_X)); }
inline float __cdecl floor(float _X)
        {return (floorf(_X)); }
inline float __cdecl fmod(float _X, float _Y)
        {return (fmodf(_X, _Y)); }
inline float __cdecl frexp(float _X, int * _Y)
        {return (frexpf(_X, _Y)); }
inline float __cdecl ldexp(float _X, int _Y)
        {return (ldexpf(_X, _Y)); }
inline float __cdecl log(float _X)
        {return (logf(_X)); }
inline float __cdecl log10(float _X)
        {return (log10f(_X)); }
inline float __cdecl modf(float _X, float * _Y)
        {return (modff(_X, _Y)); }
inline float __cdecl pow(float _X, float _Y)
        {return (powf(_X, _Y)); }
inline float __cdecl pow(float _X, int _Y)
        {return (_Pow_int(_X, _Y)); }
inline float __cdecl sin(float _X)
        {return (sinf(_X)); }
inline float __cdecl sinh(float _X)
        {return (sinhf(_X)); }
inline float __cdecl sqrt(float _X)
        {return (sqrtf(_X)); }
inline float __cdecl tan(float _X)
        {return (tanf(_X)); }
inline float __cdecl tanh(float _X)
        {return (tanhf(_X)); }
inline long double __cdecl abs(long double _X)
        {return (fabsl(_X)); }
inline long double __cdecl acos(long double _X)
        {return (acosl(_X)); }
inline long double __cdecl asin(long double _X)
        {return (asinl(_X)); }
inline long double __cdecl atan(long double _X)
        {return (atanl(_X)); }
inline long double __cdecl atan2(long double _Y, long double _X)
        {return (atan2l(_Y, _X)); }
inline long double __cdecl ceil(long double _X)
        {return (ceill(_X)); }
inline long double __cdecl cos(long double _X)
        {return (cosl(_X)); }
inline long double __cdecl cosh(long double _X)
        {return (coshl(_X)); }
inline long double __cdecl exp(long double _X)
        {return (expl(_X)); }
inline long double __cdecl fabs(long double _X)
        {return (fabsl(_X)); }
inline long double __cdecl floor(long double _X)
        {return (floorl(_X)); }
inline long double __cdecl fmod(long double _X, long double _Y)
        {return (fmodl(_X, _Y)); }
inline long double __cdecl frexp(long double _X, int * _Y)
        {return (frexpl(_X, _Y)); }
inline long double __cdecl ldexp(long double _X, int _Y)
        {return (ldexpl(_X, _Y)); }
inline long double __cdecl log(long double _X)
        {return (logl(_X)); }
inline long double __cdecl log10(long double _X)
        {return (log10l(_X)); }
inline long double __cdecl modf(long double _X, long double * _Y)
        {return (modfl(_X, _Y)); }
inline long double __cdecl pow(long double _X, long double _Y)
        {return (powl(_X, _Y)); }
inline long double __cdecl pow(long double _X, int _Y)
        {return (_Pow_int(_X, _Y)); }
inline long double __cdecl sin(long double _X)
        {return (sinl(_X)); }
inline long double __cdecl sinh(long double _X)
        {return (sinhl(_X)); }
inline long double __cdecl sqrt(long double _X)
        {return (sqrtl(_X)); }
inline long double __cdecl tan(long double _X)
        {return (tanl(_X)); }
inline long double __cdecl tanh(long double _X)
        {return (tanhl(_X)); }
 
}
#endif  /* __cplusplus */
 
#ifdef  _MSC_VER
#pragma pack(pop)
#endif  /* _MSC_VER */
 
#endif  /* _INC_MATH */

**Vincent Rogier** · 17/11/2009, 14h30

dans ton math.h de VS2003, fabsf n'est pas definie...
Dans mon math.h de VS2008, elle est definie comme macro à la suite de celle qui sont déja présente dans ton math.h

surement un oubli de VS corrigé avec VS2008...

en tout cas la ligne qu'il te manque est :

Code :

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#define fabsf(x)    ((float)fabs((double)(x)))

Le plus simple est de te faire dans ton code

Code :

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#ifndef fabsf
  #define fabsf(x)    ((float)fabs((double)(x)))
#endif

**parisjohn** · 17/11/2009, 14h32

C'est exactement ce que j'avais fait
Mais ca m'etonnait que ca soit un oubli
Merci de l'aide

Problème compilation fabsf sous VS2003

C

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