2 * ====================================================
3 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 * Developed at SunPro, a Sun Microsystems, Inc. business.
6 * Permission to use, copy, modify, and distribute this
7 * software is freely granted, provided that this notice
9 * ====================================================
13 * from: @(#)fdlibm.h 5.1 93/09/24
14 * $FreeBSD: src/lib/msun/src/math.h,v 1.8.2.2 2001/11/23 16:16:18 dd Exp $
15 * $DragonFly: src/lib/msun/src/Attic/math.h,v 1.3 2003/11/12 20:21:31 eirikn Exp $
24 extern char __infinity[];
25 #define HUGE_VAL (*(double *) __infinity)
30 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
31 #define M_E 2.7182818284590452354 /* e */
32 #define M_LOG2E 1.4426950408889634074 /* log 2e */
33 #define M_LOG10E 0.43429448190325182765 /* log 10e */
34 #define M_LN2 0.69314718055994530942 /* log e2 */
35 #define M_LN10 2.30258509299404568402 /* log e10 */
36 #define M_PI 3.14159265358979323846 /* pi */
37 #define M_PI_2 1.57079632679489661923 /* pi/2 */
38 #define M_PI_4 0.78539816339744830962 /* pi/4 */
39 #define M_1_PI 0.31830988618379067154 /* 1/pi */
40 #define M_2_PI 0.63661977236758134308 /* 2/pi */
41 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
42 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
43 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
45 #define MAXFLOAT ((float)3.40282346638528860e+38)
48 #if !defined(_XOPEN_SOURCE)
49 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
51 #define _LIB_VERSION_TYPE enum fdversion
52 #define _LIB_VERSION _fdlib_version
54 /* if global variable _LIB_VERSION is not desirable, one may
55 * change the following to be a constant by:
56 * #define _LIB_VERSION_TYPE const enum version
57 * In that case, after one initializes the value _LIB_VERSION (see
58 * s_lib_version.c) during compile time, it cannot be modified
59 * in the middle of a program
61 extern _LIB_VERSION_TYPE _LIB_VERSION;
63 #define _IEEE_ fdlibm_ieee
64 #define _SVID_ fdlibm_svid
65 #define _XOPEN_ fdlibm_xopen
66 #define _POSIX_ fdlibm_posix
68 /* We have a problem when using C++ since `exception' is a reserved
83 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
84 * (one may replace the following line by "#include <values.h>")
87 #define X_TLOSS 1.41484755040568800000e+16
96 #endif /* !_XOPEN_SOURCE */
97 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
100 #include <sys/cdefs.h>
105 extern double acos (double);
106 extern double asin (double);
107 extern double atan (double);
108 extern double atan2 (double, double);
109 extern double cos (double);
110 extern double sin (double);
111 extern double tan (double);
113 extern double cosh (double);
114 extern double sinh (double);
115 extern double tanh (double);
117 extern double exp (double);
118 extern double frexp (double, int *);
119 extern double ldexp (double, int);
120 extern double log (double);
121 extern double log10 (double);
122 extern double modf (double, double *);
124 extern double pow (double, double);
125 extern double sqrt (double);
127 extern double ceil (double);
128 extern double fabs (double);
129 extern double floor (double);
130 extern double fmod (double, double);
132 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
133 extern double erf (double);
134 extern double erfc (double);
135 extern double gamma (double);
136 extern double hypot (double, double);
137 extern int isinf (double);
138 extern int isnan (double);
139 extern int finite (double);
140 extern double j0 (double);
141 extern double j1 (double);
142 extern double jn (int, double);
143 extern double lgamma (double);
144 extern double y0 (double);
145 extern double y1 (double);
146 extern double yn (int, double);
148 #if !defined(_XOPEN_SOURCE)
149 extern double acosh (double);
150 extern double asinh (double);
151 extern double atanh (double);
152 extern double cbrt (double);
153 extern double logb (double);
154 extern double nextafter (double, double);
155 extern double remainder (double, double);
156 extern double scalb (double, double);
159 extern int matherr (struct exception *);
165 extern double significand (double);
168 * Functions callable from C, intended to support IEEE arithmetic.
170 extern double copysign (double, double);
171 extern int ilogb (double);
172 extern double rint (double);
173 extern double scalbn (double, int);
176 * BSD math library entry points
178 extern double drem (double, double);
179 extern double expm1 (double);
180 extern double log1p (double);
183 * Reentrant version of gamma & lgamma; passes signgam back by reference
184 * as the second argument; user must allocate space for signgam.
187 extern double gamma_r (double, int *);
188 extern double lgamma_r (double, int *);
189 #endif /* _REENTRANT */
192 /* float versions of ANSI/POSIX functions */
193 extern float acosf (float);
194 extern float asinf (float);
195 extern float atanf (float);
196 extern float atan2f (float, float);
197 extern float cosf (float);
198 extern float sinf (float);
199 extern float tanf (float);
201 extern float coshf (float);
202 extern float sinhf (float);
203 extern float tanhf (float);
205 extern float expf (float);
206 extern float frexpf (float, int *);
207 extern float ldexpf (float, int);
208 extern float logf (float);
209 extern float log10f (float);
210 extern float modff (float, float *);
212 extern float powf (float, float);
213 extern float sqrtf (float);
215 extern float ceilf (float);
216 extern float fabsf (float);
217 extern float floorf (float);
218 extern float fmodf (float, float);
220 extern float erff (float);
221 extern float erfcf (float);
222 extern float gammaf (float);
223 extern float hypotf (float, float);
224 extern int isnanf (float);
225 extern int finitef (float);
226 extern float j0f (float);
227 extern float j1f (float);
228 extern float jnf (int, float);
229 extern float lgammaf (float);
230 extern float y0f (float);
231 extern float y1f (float);
232 extern float ynf (int, float);
234 extern float acoshf (float);
235 extern float asinhf (float);
236 extern float atanhf (float);
237 extern float cbrtf (float);
238 extern float logbf (float);
239 extern float nextafterf (float, float);
240 extern float remainderf (float, float);
241 extern float scalbf (float, float);
244 * float version of IEEE Test Vector
246 extern float significandf (float);
249 * Float versions of functions callable from C, intended to support
252 extern float copysignf (float, float);
253 extern int ilogbf (float);
254 extern float rintf (float);
255 extern float scalbnf (float, int);
258 * float versions of BSD math library entry points
260 extern float dremf (float, float);
261 extern float expm1f (float);
262 extern float log1pf (float);
265 * Float versions of reentrant version of gamma & lgamma; passes
266 * signgam back by reference as the second argument; user must
267 * allocate space for signgam.
270 extern float gammaf_r (float, int *);
271 extern float lgammaf_r (float, int *);
272 #endif /* _REENTRANT */
274 #endif /* !_XOPEN_SOURCE */
275 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
278 #endif /* _MATH_H_ */