2 * Copyright (c) 1985, 1990, 1993
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33 * @(#)math.h 8.1 (Berkeley) 6/2/93
34 * $DragonFly: src/include/math.h,v 1.3 2004/09/13 15:53:29 dillon Exp $
40 #if defined(vax) || defined(tahoe) /* DBL_MAX from float.h */
41 #define HUGE_VAL 1.701411834604692294E+38
43 #define HUGE_VAL 1e500 /* IEEE: positive infinity */
46 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
47 #if defined(vax) || defined(tahoe)
49 * HUGE for the VAX and Tahoe converts to the largest possible F-float value.
50 * This implies an understanding of the conversion behavior of atof(3). It
51 * was defined to be the largest float so that overflow didn't occur when it
52 * was assigned to a single precision number. HUGE_VAL is strongly preferred.
54 #define HUGE 1.701411733192644270E+38
59 #define M_E 2.7182818284590452354 /* e */
60 #define M_LOG2E 1.4426950408889634074 /* log 2e */
61 #define M_LOG10E 0.43429448190325182765 /* log 10e */
62 #define M_LN2 0.69314718055994530942 /* log e2 */
63 #define M_LN10 2.30258509299404568402 /* log e10 */
64 #define M_PI 3.14159265358979323846 /* pi */
65 #define M_PI_2 1.57079632679489661923 /* pi/2 */
66 #define M_PI_4 0.78539816339744830962 /* pi/4 */
67 #define M_1_PI 0.31830988618379067154 /* 1/pi */
68 #define M_2_PI 0.63661977236758134308 /* 2/pi */
69 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
70 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
71 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
72 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
74 #include <sys/cdefs.h>
77 * Most of these functions have the side effect of setting errno, except
78 * in the (broken) BSD libm, so they not declared as __pure2.
84 double atan2 (double, double);
90 double floor (double);
91 double fmod (double, double);
92 double frexp (double, int *); /* fundamentally !__pure2 */
93 double ldexp (double, int);
95 double log10 (double);
96 double modf (double, double *); /* fundamentally !__pure2 */
97 double pow (double, double);
100 double sqrt (double);
102 double tanh (double);
105 * These functions are non-ANSI so they can be "right". The ones that
106 * don't set errno in [lib]msun are declared as __pure2.
108 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
109 double acosh (double);
110 double asinh (double);
111 double atanh (double);
112 double cabs(); /* we can't describe cabs()'s argument properly */
113 double cbrt (double) __pure2
;
114 double copysign (double, double) __pure2
;
115 double drem (double, double);
117 double erfc (double) __pure2
;
118 double expm1 (double) __pure2
;
119 int finite (double) __pure2
;
120 double hypot (double, double);
121 #if defined(vax) || defined(tahoe)
124 int isinf (double) __pure2
;
125 int isnan (double) __pure2
;
128 double jn (int, double);
129 double lgamma (double);
130 double log1p (double) __pure2
;
131 double logb (double) __pure2
;
132 double rint (double) __pure2
;
133 double scalb (double, double);
136 double yn (int, double);
141 #endif /* !_MATH_H_ */