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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /* Copyright (c) 1995 by NeXT Computer, Inc. All rights reserved. */
23: /*
24: * ====================================================
25: * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
26: *
27: * Developed at SunPro, a Sun Microsystems, Inc. business.
28: * Permission to use, copy, modify, and distribute this
29: * software is freely granted, provided that this notice
30: * is preserved.
31: * ====================================================
32: */
33:
34: #ifndef _MATH_H_
35: #define _MATH_H_
36:
37: /*
38: * ANSI/POSIX
39: */
40: #define HUGE_VAL 1e500 /* IEEE: positive infinity */
41:
42: /*
43: * XOPEN/SVID
44: */
45: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
46: #define M_E 2.7182818284590452354 /* e */
47: #define M_LOG2E 1.4426950408889634074 /* log 2e */
48: #define M_LOG10E 0.43429448190325182765 /* log 10e */
49: #define M_LN2 0.69314718055994530942 /* log e2 */
50: #define M_LN10 2.30258509299404568402 /* log e10 */
51: #define M_PI 3.14159265358979323846 /* pi */
52: #define M_PI_2 1.57079632679489661923 /* pi/2 */
53: #define M_PI_4 0.78539816339744830962 /* pi/4 */
54: #define M_1_PI 0.31830988618379067154 /* 1/pi */
55: #define M_2_PI 0.63661977236758134308 /* 2/pi */
56: #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
57: #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
58: #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
59:
60: #define MAXFLOAT ((float)3.40282346638528860e+38)
61: extern int signgam;
62:
63: #if !defined(_XOPEN_SOURCE)
64: enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
65:
66: #define _LIB_VERSION_TYPE enum fdversion
67: #define _LIB_VERSION _fdlib_version
68:
69: /* if global variable _LIB_VERSION is not desirable, one may
70: * change the following to be a constant by:
71: * #define _LIB_VERSION_TYPE const enum version
72: * In that case, after one initializes the value _LIB_VERSION (see
73: * s_lib_version.c) during compile time, it cannot be modified
74: * in the middle of a program
75: */
76: extern _LIB_VERSION_TYPE _LIB_VERSION;
77:
78: #define _IEEE_ fdlibm_ieee
79: #define _SVID_ fdlibm_svid
80: #define _XOPEN_ fdlibm_xopen
81: #define _POSIX_ fdlibm_posix
82:
83: #if !defined(__cplusplus)
84: struct exception {
85: int type;
86: char *name;
87: double arg1;
88: double arg2;
89: double retval;
90: };
91: #endif
92:
93: #define HUGE MAXFLOAT
94:
95: /*
96: * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
97: * (one may replace the following line by "#include <values.h>")
98: */
99:
100: #define X_TLOSS 1.41484755040568800000e+16
101:
102: #define DOMAIN 1
103: #define SING 2
104: #define OVERFLOW 3
105: #define UNDERFLOW 4
106: #define TLOSS 5
107: #define PLOSS 6
108:
109: #endif /* !_XOPEN_SOURCE */
110: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
111:
112:
113: #include <sys/cdefs.h>
114: __BEGIN_DECLS
115: /*
116: * ANSI/POSIX
117: */
118: extern __pure double acos __P((double));
119: extern __pure double asin __P((double));
120: extern __pure double atan __P((double));
121: extern __pure double atan2 __P((double, double));
122: extern __pure double cos __P((double));
123: extern __pure double sin __P((double));
124: extern __pure double tan __P((double));
125:
126: extern __pure double cosh __P((double));
127: extern __pure double sinh __P((double));
128: extern __pure double tanh __P((double));
129:
130: extern __pure double exp __P((double));
131: extern double frexp __P((double, int *));
132: extern __pure double ldexp __P((double, int));
133: extern __pure double log __P((double));
134: extern __pure double log10 __P((double));
135: extern double modf __P((double, double *));
136:
137: extern __pure double pow __P((double, double));
138: extern __pure double sqrt __P((double));
139:
140: extern __pure double ceil __P((double));
141: extern __pure double fabs __P((double));
142: extern __pure double floor __P((double));
143: extern __pure double fmod __P((double, double));
144:
145: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
146: extern __pure double erf __P((double));
147: extern __pure double erfc __P((double));
148: extern double gamma __P((double));
149: extern __pure double hypot __P((double, double));
150: extern __pure int isinf __P((double));
151: extern __pure int isnan __P((double));
152: extern __pure int finite __P((double));
153: extern __pure double j0 __P((double));
154: extern __pure double j1 __P((double));
155: extern __pure double jn __P((int, double));
156: extern double lgamma __P((double));
157: extern __pure double y0 __P((double));
158: extern __pure double y1 __P((double));
159: extern __pure double yn __P((int, double));
160:
161: #if !defined(_XOPEN_SOURCE)
162: extern __pure double acosh __P((double));
163: extern __pure double asinh __P((double));
164: extern __pure double atanh __P((double));
165: extern __pure double cbrt __P((double));
166: extern __pure double logb __P((double));
167: extern __pure double nextafter __P((double, double));
168: extern __pure double remainder __P((double, double));
169: extern __pure double scalb __P((double, int));
170:
171: extern int matherr __P((struct exception *));
172:
173: /*
174: * IEEE Test Vector
175: */
176: extern __pure double significand __P((double));
177:
178: /*
179: * Functions callable from C, intended to support IEEE arithmetic.
180: */
181: extern __pure double copysign __P((double, double));
182: extern __pure int ilogb __P((double));
183: extern __pure double rint __P((double));
184: extern __pure double scalbn __P((double, int));
185:
186: /*
187: * BSD math library entry points
188: */
189: extern double cabs();
190: extern __pure double drem __P((double, double));
191: extern __pure double expm1 __P((double));
192: extern __pure double log1p __P((double));
193:
194: /*
195: * Reentrant version of gamma & lgamma; passes signgam back by reference
196: * as the second argument; user must allocate space for signgam.
197: */
198: #ifdef _REENTRANT
199: extern double gamma_r __P((double, int *));
200: extern double lgamma_r __P((double, int *));
201: #endif /* _REENTRANT */
202: #endif /* !_XOPEN_SOURCE */
203: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
204: __END_DECLS
205:
206: #endif /* _MATH_H_ */
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