Annotation of src/include/math.h, Revision 1.2
1.2 ! niklas 1: /* $OpenBSD: math.h,v 1.10 1994/10/26 00:56:05 cgd Exp $ */
1.1 deraadt 2: /* $NetBSD: math.h,v 1.10 1994/10/26 00:56:05 cgd Exp $ */
3:
4: /*
5: * ====================================================
6: * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
7: *
8: * Developed at SunPro, a Sun Microsystems, Inc. business.
9: * Permission to use, copy, modify, and distribute this
10: * software is freely granted, provided that this notice
11: * is preserved.
12: * ====================================================
13: */
14:
15: /*
16: * @(#)fdlibm.h 5.1 93/09/24
17: */
18:
19: #ifndef _MATH_H_
20: #define _MATH_H_
21:
22: /*
23: * ANSI/POSIX
24: */
25: extern char __infinity[];
26: #define HUGE_VAL (*(double *) __infinity)
27:
28: /*
29: * XOPEN/SVID
30: */
31: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
32: #define M_E 2.7182818284590452354 /* e */
33: #define M_LOG2E 1.4426950408889634074 /* log 2e */
34: #define M_LOG10E 0.43429448190325182765 /* log 10e */
35: #define M_LN2 0.69314718055994530942 /* log e2 */
36: #define M_LN10 2.30258509299404568402 /* log e10 */
37: #define M_PI 3.14159265358979323846 /* pi */
38: #define M_PI_2 1.57079632679489661923 /* pi/2 */
39: #define M_PI_4 0.78539816339744830962 /* pi/4 */
40: #define M_1_PI 0.31830988618379067154 /* 1/pi */
41: #define M_2_PI 0.63661977236758134308 /* 2/pi */
42: #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
43: #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
44: #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
45:
46: #define MAXFLOAT ((float)3.40282346638528860e+38)
47: extern int signgam;
48:
49: #if !defined(_XOPEN_SOURCE)
50: enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
51:
52: #define _LIB_VERSION_TYPE enum fdversion
53: #define _LIB_VERSION _fdlib_version
54:
55: /* if global variable _LIB_VERSION is not desirable, one may
56: * change the following to be a constant by:
57: * #define _LIB_VERSION_TYPE const enum version
58: * In that case, after one initializes the value _LIB_VERSION (see
59: * s_lib_version.c) during compile time, it cannot be modified
60: * in the middle of a program
61: */
62: extern _LIB_VERSION_TYPE _LIB_VERSION;
63:
64: #define _IEEE_ fdlibm_ieee
65: #define _SVID_ fdlibm_svid
66: #define _XOPEN_ fdlibm_xopen
67: #define _POSIX_ fdlibm_posix
68:
69: struct exception {
70: int type;
71: char *name;
72: double arg1;
73: double arg2;
74: double retval;
75: };
76:
77: #define HUGE MAXFLOAT
78:
79: /*
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>")
82: */
83:
84: #define X_TLOSS 1.41484755040568800000e+16
85:
86: #define DOMAIN 1
87: #define SING 2
88: #define OVERFLOW 3
89: #define UNDERFLOW 4
90: #define TLOSS 5
91: #define PLOSS 6
92:
93: #endif /* !_XOPEN_SOURCE */
94: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
95:
96:
97: #include <sys/cdefs.h>
98: __BEGIN_DECLS
99: /*
100: * ANSI/POSIX
101: */
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));
109:
110: extern double cosh __P((double));
111: extern double sinh __P((double));
112: extern double tanh __P((double));
113:
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 *));
120:
121: extern double pow __P((double, double));
122: extern double sqrt __P((double));
123:
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));
128:
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));
144:
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));
154:
155: extern int matherr __P((struct exception *));
156:
157: /*
158: * IEEE Test Vector
159: */
160: extern double significand __P((double));
161:
162: /*
163: * Functions callable from C, intended to support IEEE arithmetic.
164: */
165: extern double copysign __P((double, double));
166: extern int ilogb __P((double));
167: extern double rint __P((double));
168: extern double scalbn __P((double, int));
169:
170: /*
171: * BSD math library entry points
172: */
173: extern double cabs();
174: extern double drem __P((double, double));
175: extern double expm1 __P((double));
176: extern double log1p __P((double));
177:
178: /*
179: * Reentrant version of gamma & lgamma; passes signgam back by reference
180: * as the second argument; user must allocate space for signgam.
181: */
182: #ifdef _REENTRANT
183: extern double gamma_r __P((double, int *));
184: extern double lgamma_r __P((double, int *));
185: #endif /* _REENTRANT */
186:
187:
188: /* float versions of ANSI/POSIX functions */
189: extern float acosf __P((float));
190: extern float asinf __P((float));
191: extern float atanf __P((float));
192: extern float atan2f __P((float, float));
193: extern float cosf __P((float));
194: extern float sinf __P((float));
195: extern float tanf __P((float));
196:
197: extern float coshf __P((float));
198: extern float sinhf __P((float));
199: extern float tanhf __P((float));
200:
201: extern float expf __P((float));
202: extern float frexpf __P((float, int *));
203: extern float ldexpf __P((float, int));
204: extern float logf __P((float));
205: extern float log10f __P((float));
206: extern float modff __P((float, float *));
207:
208: extern float powf __P((float, float));
209: extern float sqrtf __P((float));
210:
211: extern float ceilf __P((float));
212: extern float fabsf __P((float));
213: extern float floorf __P((float));
214: extern float fmodf __P((float, float));
215:
216: extern float erff __P((float));
217: extern float erfcf __P((float));
218: extern float gammaf __P((float));
219: extern float hypotf __P((float, float));
220: extern int isnanf __P((float));
221: extern int finitef __P((float));
222: extern float j0f __P((float));
223: extern float j1f __P((float));
224: extern float jnf __P((int, float));
225: extern float lgammaf __P((float));
226: extern float y0f __P((float));
227: extern float y1f __P((float));
228: extern float ynf __P((int, float));
229:
230: extern float acoshf __P((float));
231: extern float asinhf __P((float));
232: extern float atanhf __P((float));
233: extern float cbrtf __P((float));
234: extern float logbf __P((float));
235: extern float nextafterf __P((float, float));
236: extern float remainderf __P((float, float));
237: extern float scalbf __P((float, float));
238:
239: /*
240: * float version of IEEE Test Vector
241: */
242: extern float significandf __P((float));
243:
244: /*
245: * Float versions of functions callable from C, intended to support
246: * IEEE arithmetic.
247: */
248: extern float copysignf __P((float, float));
249: extern int ilogbf __P((float));
250: extern float rintf __P((float));
251: extern float scalbnf __P((float, int));
252:
253: /*
254: * float versions of BSD math library entry points
255: */
256: extern float cabsf ();
257: extern float dremf __P((float, float));
258: extern float expm1f __P((float));
259: extern float log1pf __P((float));
260:
261: /*
262: * Float versions of reentrant version of gamma & lgamma; passes
263: * signgam back by reference as the second argument; user must
264: * allocate space for signgam.
265: */
266: #ifdef _REENTRANT
267: extern float gammaf_r __P((float, int *));
268: extern float lgammaf_r __P((float, int *));
269: #endif /* _REENTRANT */
270:
271: #endif /* !_XOPEN_SOURCE */
272: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
273: __END_DECLS
274:
275: #endif /* _MATH_H_ */
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