__math.h
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上传日期:2007-04-14
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- /* Copyright 1994-1995 The Santa Cruz Operation, Inc. All Rights Reserved. */
- #if defined(_NO_PROTOTYPE) /* Old, crufty environment */
- #include <oldstyle/__math.h>
- #elif defined(_XOPEN_SOURCE) || defined(_XPG4_VERS) /* Xpg4 environment */
- #include <xpg4/__math.h>
- #elif defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) /* Posix environment */
- #include <posix/__math.h>
- #elif _STRICT_ANSI /* Pure Ansi/ISO environment */
- #include <ansi/__math.h>
- #elif defined(_SCO_ODS_30) /* Old, Tbird compatible environment */
- #include <ods_30_compat/__math.h>
- #else /* Normal, default environment */
- /*
- * Portions Copyright (C) 1983-1995 The Santa Cruz Operation, Inc.
- * All Rights Reserved.
- *
- * The information in this file is provided for the exclusive use of
- * the licensees of The Santa Cruz Operation, Inc. Such users have the
- * right to use, modify, and incorporate this code into other products
- * for purposes authorized by the license agreement provided they include
- * this notice and the associated copyright notice with any such product.
- * The information in this file is provided "AS IS" without warranty.
- */
- /* Portions Copyright (c) 1990, 1991, 1992, 1993 UNIX System Laboratories, Inc. */
- /* Portions Copyright (c) 1979 - 1990 AT&T */
- /* All Rights Reserved */
- /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
- /* UNIX System Laboratories, Inc. */
- /* The copyright notice above does not evidence any */
- /* actual or intended publication of such source code. */
- #ifndef ___MATH_H
- #define ___MATH_H
- #pragma comment(exestr, "xpg4plus @(#) math.h 20.1 94/12/04 ")
- #pragma pack(4)
- #ifdef __cplusplus
- extern "C" {
- #endif
- extern double acos(double);
- extern double asin(double);
- extern double atan(double);
- extern double atan2(double, double);
- extern double cos(double);
- extern double sin(double);
- extern double tan(double);
- extern double cosh(double);
- extern double sinh(double);
- extern double tanh(double);
- extern double exp(double);
- extern double frexp(double, int *);
- extern double ldexp(double, int);
- extern double log(double);
- extern double log10(double);
- extern double modf(double, double *);
- extern double pow(double, double);
- extern double sqrt(double);
- extern double ceil(double);
- extern double fabs(double);
- extern double floor(double);
- extern double fmod(double, double);
- #ifndef HUGE_VAL
- extern const double __huge_val;
- #define HUGE_VAL (+__huge_val)
- #endif
- extern double erf(double);
- extern double erfc(double);
- extern double gamma(double);
- extern double hypot(double, double);
- extern double j0(double);
- extern double j1(double);
- extern double jn(int, double);
- extern double y0(double);
- extern double y1(double);
- extern double yn(int, double);
- extern double lgamma(double);
- extern int isnan(double);
- #define MAXFLOAT ((float)3.40282346638528860e+38)
- #define HUGE MAXFLOAT
- /*
- * The following are all legal as XPG4 external functions but must only
- * be declared in the non standards environments as they conflict with
- * the user name space
- */
-
- extern long double frexpl(long double, int *);
- extern long double ldexpl(long double, int);
- extern long double modfl(long double, long double *);
- extern float acosf(float);
- extern float asinf(float);
- extern float atanf(float);
- extern float atan2f(float, float);
- extern float cosf(float);
- extern float sinf(float);
- extern float tanf(float);
- extern float coshf(float);
- extern float sinhf(float);
- extern float tanhf(float);
- extern float expf(float);
- extern float logf(float);
- extern float log10f(float);
- extern float powf(float, float);
- extern float sqrtf(float);
- extern float ceilf(float);
- extern float fabsf(float);
- extern float floorf(float);
- extern float fmodf(float, float);
- extern float modff(float, float *);
- /* These are all extensions from XPG4 */
- extern double atof(const char *);
- extern double scalb(double, double);
- extern double logb(double);
- extern double log1p(double);
- extern double nextafter(double, double);
- extern double acosh(double);
- extern double asinh(double);
- extern double atanh(double);
- extern double cbrt(double);
- extern double copysign(double, double);
- extern double expm1(double);
- extern int ilogb(double);
- extern double remainder(double, double);
- extern double rint(double);
- extern int unordered(double, double);
- extern int finite(double);
- extern long double scalbl(long double, long double);
- extern long double logbl(long double);
- extern long double nextafterl(long double, long double);
- extern int unorderedl(long double, long double);
- extern int finitel(long double);
- extern int signgam;
- #define M_E 2.7182818284590452354
- #define M_LOG2E 1.4426950408889634074
- #define M_LOG10E 0.43429448190325182765
- #define M_LN2 0.69314718055994530942
- #define M_LN10 2.30258509299404568402
- #define M_PI 3.14159265358979323846
- #define M_PI_2 1.57079632679489661923
- #define M_PI_4 0.78539816339744830962
- #define M_1_PI 0.31830988618379067154
- #define M_2_PI 0.63661977236758134308
- #define M_2_SQRTPI 1.12837916709551257390
- #define M_SQRT2 1.41421356237309504880
- #define M_SQRT1_2 0.70710678118654752440
- #define _ABS(x) ((x) < 0 ? -(x) : (x))
- #define _REDUCE(TYPE, X, XN, C1, C2) {
- double x1 = (double)(TYPE)X, x2 = X - x1;
- X = x1 - (XN) * (C1); X += x2; X -= (XN) * (C2); }
- #define DOMAIN 1
- #define SING 2
- #define OVERFLOW 3
- #define UNDERFLOW 4
- #define TLOSS 5
- #define PLOSS 6
- #define _POLY1(x, c) ((c)[0] * (x) + (c)[1])
- #define _POLY2(x, c) (_POLY1((x), (c)) * (x) + (c)[2])
- #define _POLY3(x, c) (_POLY2((x), (c)) * (x) + (c)[3])
- #define _POLY4(x, c) (_POLY3((x), (c)) * (x) + (c)[4])
- #define _POLY5(x, c) (_POLY4((x), (c)) * (x) + (c)[5])
- #define _POLY6(x, c) (_POLY5((x), (c)) * (x) + (c)[6])
- #define _POLY7(x, c) (_POLY6((x), (c)) * (x) + (c)[7])
- #define _POLY8(x, c) (_POLY7((x), (c)) * (x) + (c)[8])
- #define _POLY9(x, c) (_POLY8((x), (c)) * (x) + (c)[9])
- #ifdef __cplusplus
- }
- inline int sqr(int i) {return(i*i);}
- inline double sqr(double i) {return(i*i);}
- #endif /* __cplusplus */
- #pragma pack()
- #if __cplusplus && !defined(PI)
- #define PI M_PI
- #endif /* __cplusplus */
- #endif /* _MATH_H */
- #endif