Annotation of src/include/math.h, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: math.h,v 1.10 1994/10/26 00:56:05 cgd Exp $ */
2:
3: /*
4: * ====================================================
5: * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6: *
7: * Developed at SunPro, a Sun Microsystems, Inc. business.
8: * Permission to use, copy, modify, and distribute this
9: * software is freely granted, provided that this notice
10: * is preserved.
11: * ====================================================
12: */
13:
14: /*
15: * @(#)fdlibm.h 5.1 93/09/24
16: */
17:
18: #ifndef _MATH_H_
19: #define _MATH_H_
20:
21: /*
22: * ANSI/POSIX
23: */
24: extern char __infinity[];
25: #define HUGE_VAL (*(double *) __infinity)
26:
27: /*
28: * XOPEN/SVID
29: */
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) */
44:
45: #define MAXFLOAT ((float)3.40282346638528860e+38)
46: extern int signgam;
47:
48: #if !defined(_XOPEN_SOURCE)
49: enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
50:
51: #define _LIB_VERSION_TYPE enum fdversion
52: #define _LIB_VERSION _fdlib_version
53:
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
60: */
61: extern _LIB_VERSION_TYPE _LIB_VERSION;
62:
63: #define _IEEE_ fdlibm_ieee
64: #define _SVID_ fdlibm_svid
65: #define _XOPEN_ fdlibm_xopen
66: #define _POSIX_ fdlibm_posix
67:
68: struct exception {
69: int type;
70: char *name;
71: double arg1;
72: double arg2;
73: double retval;
74: };
75:
76: #define HUGE MAXFLOAT
77:
78: /*
79: * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
80: * (one may replace the following line by "#include <values.h>")
81: */
82:
83: #define X_TLOSS 1.41484755040568800000e+16
84:
85: #define DOMAIN 1
86: #define SING 2
87: #define OVERFLOW 3
88: #define UNDERFLOW 4
89: #define TLOSS 5
90: #define PLOSS 6
91:
92: #endif /* !_XOPEN_SOURCE */
93: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
94:
95:
96: #include <sys/cdefs.h>
97: __BEGIN_DECLS
98: /*
99: * ANSI/POSIX
100: */
101: extern double acos __P((double));
102: extern double asin __P((double));
103: extern double atan __P((double));
104: extern double atan2 __P((double, double));
105: extern double cos __P((double));
106: extern double sin __P((double));
107: extern double tan __P((double));
108:
109: extern double cosh __P((double));
110: extern double sinh __P((double));
111: extern double tanh __P((double));
112:
113: extern double exp __P((double));
114: extern double frexp __P((double, int *));
115: extern double ldexp __P((double, int));
116: extern double log __P((double));
117: extern double log10 __P((double));
118: extern double modf __P((double, double *));
119:
120: extern double pow __P((double, double));
121: extern double sqrt __P((double));
122:
123: extern double ceil __P((double));
124: extern double fabs __P((double));
125: extern double floor __P((double));
126: extern double fmod __P((double, double));
127:
128: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
129: extern double erf __P((double));
130: extern double erfc __P((double));
131: extern double gamma __P((double));
132: extern double hypot __P((double, double));
133: extern int isinf __P((double));
134: extern int isnan __P((double));
135: extern int finite __P((double));
136: extern double j0 __P((double));
137: extern double j1 __P((double));
138: extern double jn __P((int, double));
139: extern double lgamma __P((double));
140: extern double y0 __P((double));
141: extern double y1 __P((double));
142: extern double yn __P((int, double));
143:
144: #if !defined(_XOPEN_SOURCE)
145: extern double acosh __P((double));
146: extern double asinh __P((double));
147: extern double atanh __P((double));
148: extern double cbrt __P((double));
149: extern double logb __P((double));
150: extern double nextafter __P((double, double));
151: extern double remainder __P((double, double));
152: extern double scalb __P((double, double));
153:
154: extern int matherr __P((struct exception *));
155:
156: /*
157: * IEEE Test Vector
158: */
159: extern double significand __P((double));
160:
161: /*
162: * Functions callable from C, intended to support IEEE arithmetic.
163: */
164: extern double copysign __P((double, double));
165: extern int ilogb __P((double));
166: extern double rint __P((double));
167: extern double scalbn __P((double, int));
168:
169: /*
170: * BSD math library entry points
171: */
172: extern double cabs();
173: extern double drem __P((double, double));
174: extern double expm1 __P((double));
175: extern double log1p __P((double));
176:
177: /*
178: * Reentrant version of gamma & lgamma; passes signgam back by reference
179: * as the second argument; user must allocate space for signgam.
180: */
181: #ifdef _REENTRANT
182: extern double gamma_r __P((double, int *));
183: extern double lgamma_r __P((double, int *));
184: #endif /* _REENTRANT */
185:
186:
187: /* float versions of ANSI/POSIX functions */
188: extern float acosf __P((float));
189: extern float asinf __P((float));
190: extern float atanf __P((float));
191: extern float atan2f __P((float, float));
192: extern float cosf __P((float));
193: extern float sinf __P((float));
194: extern float tanf __P((float));
195:
196: extern float coshf __P((float));
197: extern float sinhf __P((float));
198: extern float tanhf __P((float));
199:
200: extern float expf __P((float));
201: extern float frexpf __P((float, int *));
202: extern float ldexpf __P((float, int));
203: extern float logf __P((float));
204: extern float log10f __P((float));
205: extern float modff __P((float, float *));
206:
207: extern float powf __P((float, float));
208: extern float sqrtf __P((float));
209:
210: extern float ceilf __P((float));
211: extern float fabsf __P((float));
212: extern float floorf __P((float));
213: extern float fmodf __P((float, float));
214:
215: extern float erff __P((float));
216: extern float erfcf __P((float));
217: extern float gammaf __P((float));
218: extern float hypotf __P((float, float));
219: extern int isnanf __P((float));
220: extern int finitef __P((float));
221: extern float j0f __P((float));
222: extern float j1f __P((float));
223: extern float jnf __P((int, float));
224: extern float lgammaf __P((float));
225: extern float y0f __P((float));
226: extern float y1f __P((float));
227: extern float ynf __P((int, float));
228:
229: extern float acoshf __P((float));
230: extern float asinhf __P((float));
231: extern float atanhf __P((float));
232: extern float cbrtf __P((float));
233: extern float logbf __P((float));
234: extern float nextafterf __P((float, float));
235: extern float remainderf __P((float, float));
236: extern float scalbf __P((float, float));
237:
238: /*
239: * float version of IEEE Test Vector
240: */
241: extern float significandf __P((float));
242:
243: /*
244: * Float versions of functions callable from C, intended to support
245: * IEEE arithmetic.
246: */
247: extern float copysignf __P((float, float));
248: extern int ilogbf __P((float));
249: extern float rintf __P((float));
250: extern float scalbnf __P((float, int));
251:
252: /*
253: * float versions of BSD math library entry points
254: */
255: extern float cabsf ();
256: extern float dremf __P((float, float));
257: extern float expm1f __P((float));
258: extern float log1pf __P((float));
259:
260: /*
261: * Float versions of reentrant version of gamma & lgamma; passes
262: * signgam back by reference as the second argument; user must
263: * allocate space for signgam.
264: */
265: #ifdef _REENTRANT
266: extern float gammaf_r __P((float, int *));
267: extern float lgammaf_r __P((float, int *));
268: #endif /* _REENTRANT */
269:
270: #endif /* !_XOPEN_SOURCE */
271: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
272: __END_DECLS
273:
274: #endif /* _MATH_H_ */
![[BACK]](/icons/back.gif){kind=icon}
Return to math.h CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / include