1 /* 2 * Copyright (c) 1985, 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)math.h 5.8 (Berkeley) 04/02/91 8 */ 9 10 #ifndef _MATH_H_ 11 #define _MATH_H_ 12 13 #if defined(vax) || defined(tahoe) /* DBL_MAX from float.h */ 14 #define HUGE_VAL 1.701411834604692294E+38 15 #else 16 #define HUGE_VAL 1e500 /* IEEE: positive infinity */ 17 #endif 18 19 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 20 #if defined(vax) || defined(tahoe) 21 /* 22 * HUGE for the VAX and Tahoe converts to the largest possible F-float value. 23 * This implies an understanding of the conversion behavior of atof(3). It 24 * was defined to be the largest float so that overflow didn't occur when it 25 * was assigned to a single precision number. HUGE_VAL is strongly preferred. 26 */ 27 #define HUGE 1.701411733192644270E+38 28 #else 29 #define HUGE HUGE_VAL 30 #endif 31 #endif 32 33 #define M_E 2.7182818284590452354 /* e */ 34 #define M_LOG2E 1.4426950408889634074 /* log 2e */ 35 #define M_LOG10E 0.43429448190325182765 /* log 10e */ 36 #define M_LN2 0.69314718055994530942 /* log e2 */ 37 #define M_LN10 2.30258509299404568402 /* log e10 */ 38 #define M_PI 3.14159265358979323846 /* pi */ 39 #define M_PI_2 1.57079632679489661923 /* pi/2 */ 40 #define M_PI_4 0.78539816339744830962 /* pi/4 */ 41 #define M_1_PI 0.31830988618379067154 /* 1/pi */ 42 #define M_2_PI 0.63661977236758134308 /* 2/pi */ 43 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ 44 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ 45 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ 46 47 #include <sys/cdefs.h> 48 49 __BEGIN_DECLS 50 double acos __P((double)); 51 double asin __P((double)); 52 double atan __P((double)); 53 double atan2 __P((double, double)); 54 double ceil __P((double)); 55 double cos __P((double)); 56 double cosh __P((double)); 57 double exp __P((double)); 58 double fabs __P((double)); 59 double floor __P((double)); 60 double fmod __P((double, double)); 61 double frexp __P((double, int *)); 62 double ldexp __P((double, int)); 63 double log __P((double)); 64 double log10 __P((double)); 65 double modf __P((double, double *)); 66 double pow __P((double, double)); 67 double sin __P((double)); 68 double sinh __P((double)); 69 double sqrt __P((double)); 70 double tan __P((double)); 71 double tanh __P((double)); 72 73 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 74 double acosh __P((double)); 75 double asinh __P((double)); 76 double atanh __P((double)); 77 double cabs(); /* we can't describe cabs()'s argument properly */ 78 double cbrt __P((double)); 79 double copysign __P((double, double)); 80 double drem __P((double, double)); 81 double erf __P((double)); 82 double erfc __P((double)); 83 double expm1 __P((double)); 84 int finite __P((double)); 85 double hypot __P((double, double)); 86 #if defined(vax) || defined(tahoe) 87 double infnan __P((int)); 88 #endif 89 int isinf __P((double)); 90 int isnan __P((double)); 91 double j0 __P((double)); 92 double j1 __P((double)); 93 double jn __P((int, double)); 94 double lgamma __P((double)); 95 double log1p __P((double)); 96 double logb __P((double)); 97 double rint __P((double)); 98 double scalb __P((double, int)); 99 double y0 __P((double)); 100 double y1 __P((double)); 101 double yn __P((int, double)); 102 #endif 103 104 __END_DECLS 105 106 #endif /* _MATH_H_ */ 107