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 * $Id: math.h,v 1.5 1997/08/31 22:12:19 bde Exp $
23 extern char __infinity[];
24 #define HUGE_VAL (*(double *) __infinity)
29 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
30 #define M_E 2.7182818284590452354 /* e */
31 #define M_LOG2E 1.4426950408889634074 /* log 2e */
32 #define M_LOG10E 0.43429448190325182765 /* log 10e */
33 #define M_LN2 0.69314718055994530942 /* log e2 */
34 #define M_LN10 2.30258509299404568402 /* log e10 */
35 #define M_PI 3.14159265358979323846 /* pi */
36 #define M_PI_2 1.57079632679489661923 /* pi/2 */
37 #define M_PI_4 0.78539816339744830962 /* pi/4 */
38 #define M_1_PI 0.31830988618379067154 /* 1/pi */
39 #define M_2_PI 0.63661977236758134308 /* 2/pi */
40 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
41 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
42 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
44 #define MAXFLOAT ((float)3.40282346638528860e+38)
47 #if !defined(_XOPEN_SOURCE)
48 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
50 #define _LIB_VERSION_TYPE enum fdversion
51 #define _LIB_VERSION _fdlib_version
53 /* if global variable _LIB_VERSION is not desirable, one may
54 * change the following to be a constant by:
55 * #define _LIB_VERSION_TYPE const enum version
56 * In that case, after one initializes the value _LIB_VERSION (see
57 * s_lib_version.c) during compile time, it cannot be modified
58 * in the middle of a program
60 extern _LIB_VERSION_TYPE _LIB_VERSION;
62 #define _IEEE_ fdlibm_ieee
63 #define _SVID_ fdlibm_svid
64 #define _XOPEN_ fdlibm_xopen
65 #define _POSIX_ fdlibm_posix
80 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
81 * (one may replace the following line by "#include <values.h>")
84 #define X_TLOSS 1.41484755040568800000e+16
93 #endif /* !_XOPEN_SOURCE */
94 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
97 #include <sys/cdefs.h>
102 extern double acos __P((double));
103 extern double asin __P((double));
104 extern double atan __P((double));
105 extern double atan2 __P((double, double));
106 extern double cos __P((double));
107 extern double sin __P((double));
108 extern double tan __P((double));
110 extern double cosh __P((double));
111 extern double sinh __P((double));
112 extern double tanh __P((double));
114 extern double exp __P((double));
115 extern double frexp __P((double, int *));
116 extern double ldexp __P((double, int));
117 extern double log __P((double));
118 extern double log10 __P((double));
119 extern double modf __P((double, double *));
121 extern double pow __P((double, double));
122 extern double sqrt __P((double));
124 extern double ceil __P((double));
125 extern double fabs __P((double));
126 extern double floor __P((double));
127 extern double fmod __P((double, double));
129 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
130 extern double erf __P((double));
131 extern double erfc __P((double));
132 extern double gamma __P((double));
133 extern double hypot __P((double, double));
134 extern int isinf __P((double));
135 extern int isnan __P((double));
136 extern int finite __P((double));
137 extern double j0 __P((double));
138 extern double j1 __P((double));
139 extern double jn __P((int, double));
140 extern double lgamma __P((double));
141 extern double y0 __P((double));
142 extern double y1 __P((double));
143 extern double yn __P((int, double));
145 #if !defined(_XOPEN_SOURCE)
146 extern double acosh __P((double));
147 extern double asinh __P((double));
148 extern double atanh __P((double));
149 extern double cbrt __P((double));
150 extern double logb __P((double));
151 extern double nextafter __P((double, double));
152 extern double remainder __P((double, double));
153 extern double scalb __P((double, double));
156 extern int matherr __P((struct exception *));
162 extern double significand __P((double));
165 * Functions callable from C, intended to support IEEE arithmetic.
167 extern double copysign __P((double, double));
168 extern int ilogb __P((double));
169 extern double rint __P((double));
170 extern double scalbn __P((double, int));
173 * BSD math library entry points
175 extern double cabs();
176 extern double drem __P((double, double));
177 extern double expm1 __P((double));
178 extern double log1p __P((double));
181 * Reentrant version of gamma & lgamma; passes signgam back by reference
182 * as the second argument; user must allocate space for signgam.
185 extern double gamma_r __P((double, int *));
186 extern double lgamma_r __P((double, int *));
187 #endif /* _REENTRANT */
190 /* float versions of ANSI/POSIX functions */
191 extern float acosf __P((float));
192 extern float asinf __P((float));
193 extern float atanf __P((float));
194 extern float atan2f __P((float, float));
195 extern float cosf __P((float));
196 extern float sinf __P((float));
197 extern float tanf __P((float));
199 extern float coshf __P((float));
200 extern float sinhf __P((float));
201 extern float tanhf __P((float));
203 extern float expf __P((float));
204 extern float frexpf __P((float, int *));
205 extern float ldexpf __P((float, int));
206 extern float logf __P((float));
207 extern float log10f __P((float));
208 extern float modff __P((float, float *));
210 extern float powf __P((float, float));
211 extern float sqrtf __P((float));
213 extern float ceilf __P((float));
214 extern float fabsf __P((float));
215 extern float floorf __P((float));
216 extern float fmodf __P((float, float));
218 extern float erff __P((float));
219 extern float erfcf __P((float));
220 extern float gammaf __P((float));
221 extern float hypotf __P((float, float));
222 extern int isnanf __P((float));
223 extern int finitef __P((float));
224 extern float j0f __P((float));
225 extern float j1f __P((float));
226 extern float jnf __P((int, float));
227 extern float lgammaf __P((float));
228 extern float y0f __P((float));
229 extern float y1f __P((float));
230 extern float ynf __P((int, float));
232 extern float acoshf __P((float));
233 extern float asinhf __P((float));
234 extern float atanhf __P((float));
235 extern float cbrtf __P((float));
236 extern float logbf __P((float));
237 extern float nextafterf __P((float, float));
238 extern float remainderf __P((float, float));
239 extern float scalbf __P((float, float));
242 * float version of IEEE Test Vector
244 extern float significandf __P((float));
247 * Float versions of functions callable from C, intended to support
250 extern float copysignf __P((float, float));
251 extern int ilogbf __P((float));
252 extern float rintf __P((float));
253 extern float scalbnf __P((float, int));
256 * float versions of BSD math library entry points
258 extern float cabsf ();
259 extern float dremf __P((float, float));
260 extern float expm1f __P((float));
261 extern float log1pf __P((float));
264 * Float versions of reentrant version of gamma & lgamma; passes
265 * signgam back by reference as the second argument; user must
266 * allocate space for signgam.
269 extern float gammaf_r __P((float, int *));
270 extern float lgammaf_r __P((float, int *));
271 #endif /* _REENTRANT */
273 #endif /* !_XOPEN_SOURCE */
274 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
277 #endif /* _MATH_H_ */