Dos6.0
源代码在线查看： math.h
/***
*math.h - definitions and declarations for math library
*
* Copyright (c) 1985-1990, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file contains constant definitions and external subroutine
* declarations for the math subroutine library.
* [ANSI/System V]
*
****/
#if defined(_DLL) && !defined(_MT)
#error Cannot define _DLL without _MT
#endif
#ifdef _MT
#define _FAR_ _far
#else
#define _FAR_
#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 _FAR_ *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 */
} ;
#define _COMPLEX_DEFINED
#endif
/* 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 _DLL
extern double _near _cdecl HUGE;
#define HUGE_VAL HUGE
#else /* _DLL */
extern double _FAR_ _cdecl HUGE;
#define HUGE_VAL HUGE
#endif /* _DLL */
/* function prototypes */
#ifdef _MT /* function prototypes for _MT version */
int _FAR_ _cdecl abs(int);
double _FAR_ _pascal acos(double);
double _FAR_ _pascal asin(double);
double _FAR_ _pascal atan(double);
double _FAR_ _pascal atan2(double, double);
double _FAR_ _pascal atof(const char _FAR_ *);
double _FAR_ _pascal cabs(struct complex);
double _FAR_ _pascal ceil(double);
double _FAR_ _pascal cos(double);
double _FAR_ _pascal cosh(double);
int _FAR_ _cdecl dieeetomsbin(double _FAR_ *, double _FAR_ *);
int _FAR_ _cdecl dmsbintoieee(double _FAR_ *, double _FAR_ *);
double _FAR_ _pascal exp(double);
double _FAR_ _pascal fabs(double);
int _FAR_ _cdecl fieeetomsbin(float _FAR_ *, float _FAR_ *);
double _FAR_ _pascal floor(double);
double _FAR_ _pascal fmod(double, double);
int _FAR_ _cdecl fmsbintoieee(float _FAR_ *, float _FAR_ *);
double _FAR_ _pascal frexp(double, int _FAR_ *);
double _FAR_ _pascal hypot(double, double);
double _FAR_ _pascal j0(double);
double _FAR_ _pascal j1(double);
double _FAR_ _pascal jn(int, double);
long _FAR_ _cdecl labs(long);
double _FAR_ _pascal ldexp(double, int);
double _FAR_ _pascal log(double);
double _FAR_ _pascal log10(double);
int _FAR_ _cdecl matherr(struct exception _FAR_ *);
double _FAR_ _pascal modf(double, double _FAR_ *);
double _FAR_ _pascal pow(double, double);
double _FAR_ _pascal sin(double);
double _FAR_ _pascal sinh(double);
double _FAR_ _pascal sqrt(double);
double _FAR_ _pascal tan(double);
double _FAR_ _pascal tanh(double);
double _FAR_ _pascal y0(double);
double _FAR_ _pascal y1(double);
double _FAR_ _pascal yn(int, double);
#else /* function prototypes for non _MT version */
int _FAR_ _cdecl abs(int);
double _FAR_ _cdecl acos(double);
double _FAR_ _cdecl asin(double);
double _FAR_ _cdecl atan(double);
double _FAR_ _cdecl atan2(double, double);
double _FAR_ _cdecl atof(const char _FAR_ *);
double _FAR_ _cdecl cabs(struct complex);
double _FAR_ _cdecl ceil(double);
double _FAR_ _cdecl cos(double);
double _FAR_ _cdecl cosh(double);
int _FAR_ _cdecl dieeetomsbin(double _FAR_ *, double _FAR_ *);
int _FAR_ _cdecl dmsbintoieee(double _FAR_ *, double _FAR_ *);
double _FAR_ _cdecl exp(double);
double _FAR_ _cdecl fabs(double);
int _FAR_ _cdecl fieeetomsbin(float _FAR_ *, float _FAR_ *);
double _FAR_ _cdecl floor(double);
double _FAR_ _cdecl fmod(double, double);
int _FAR_ _cdecl fmsbintoieee(float _FAR_ *, float _FAR_ *);
double _FAR_ _cdecl frexp(double, int _FAR_ *);
double _FAR_ _cdecl hypot(double, double);
double _FAR_ _cdecl j0(double);
double _FAR_ _cdecl j1(double);
double _FAR_ _cdecl jn(int, double);
long _FAR_ _cdecl labs(long);
double _FAR_ _cdecl ldexp(double, int);
double _FAR_ _cdecl log(double);
double _FAR_ _cdecl log10(double);
int _FAR_ _cdecl matherr(struct exception _FAR_ *);
double _FAR_ _cdecl modf(double, double _FAR_ *);
double _FAR_ _cdecl pow(double, double);
double _FAR_ _cdecl sin(double);
double _FAR_ _cdecl sinh(double);
double _FAR_ _cdecl sqrt(double);
double _FAR_ _cdecl tan(double);
double _FAR_ _cdecl tanh(double);
double _FAR_ _cdecl y0(double);
double _FAR_ _cdecl y1(double);
double _FAR_ _cdecl yn(int, double);
#endif
/* definition of _exceptionl struct - this struct is passed to the _matherrl
* routine when a floating point exception is detected in a long double routine
*/
#ifndef _LD_EXCEPTION_DEFINED
struct _exceptionl {
int type; /* exception type - see below */
char _FAR_ *name; /* name of function where error occured */
long double arg1; /* first argument to function */
long double arg2; /* second argument (if any) to function */
long double retval; /* value to be returned by function */
} ;
#define _LD_EXCEPTION_DEFINED
#endif
/* definition of a _complexl struct to be used by those who use _cabsl and
* want type checking on their argument
*/
#ifndef _LD_COMPLEX_DEFINED
struct _complexl {
long double x,y; /* real and imaginary parts */
} ;
#define _LD_COMPLEX_DEFINED
#endif
#ifndef _DLL
extern long double _near _cdecl _LHUGE;
#define _LHUGE_VAL _LHUGE
#else /* _DLL */
extern long double _FAR_ _cdecl _LHUGE;
#define _LHUGE_VAL _LHUGE
#endif /* _DLL */
long double _FAR_ _cdecl acosl(long double);
long double _FAR_ _cdecl asinl(long double);
long double _FAR_ _cdecl atanl(long double);
long double _FAR_ _cdecl atan2l(long double, long double);
long double _FAR_ _cdecl _atold(const char _FAR_ *);
long double _FAR_ _cdecl cabsl(struct _complexl);
long double _FAR_ _cdecl ceill(long double);
long double _FAR_ _cdecl cosl(long double);
long double _FAR_ _cdecl coshl(long double);
long double _FAR_ _cdecl expl(long double);
long double _FAR_ _cdecl fabsl(long double);
long double _FAR_ _cdecl floorl(long double);
long double _FAR_ _cdecl fmodl(long double, long double);
long double _FAR_ _cdecl frexpl(long double, int _FAR_ *);
long double _FAR_ _cdecl hypotl(long double, long double);
long double _FAR_ _cdecl _j0l(long double);
long double _FAR_ _cdecl _j1l(long double);
long double _FAR_ _cdecl _jnl(int, long double);
long double _FAR_ _cdecl ldexpl(long double, int);
long double _FAR_ _cdecl logl(long double);
long double _FAR_ _cdecl log10l(long double);
int _FAR_ _cdecl _matherrl(struct _exceptionl _FAR_ *);
long double _FAR_ _cdecl modfl(long double, long double _FAR_ *);
long double _FAR_ _cdecl powl(long double, long double);
long double _FAR_ _cdecl sinl(long double);
long double _FAR_ _cdecl sinhl(long double);
long double _FAR_ _cdecl sqrtl(long double);
long double _FAR_ _cdecl tanl(long double);
long double _FAR_ _cdecl tanhl(long double);
long double _FAR_ _cdecl _y0l(long double);
long double _FAR_ _cdecl _y1l(long double);
long double _FAR_ _cdecl _ynl(int, long double);
