Annotation of src/include/math.h, Revision 1.7
1.7 ! jason 1: /* $OpenBSD: math.h,v 1.6 2002/02/16 21:27:17 millert Exp $ */
1.1 deraadt 2: /*
3: * ====================================================
4: * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5: *
6: * Developed at SunPro, a Sun Microsystems, Inc. business.
7: * Permission to use, copy, modify, and distribute this
8: * software is freely granted, provided that this notice
9: * is preserved.
10: * ====================================================
11: */
12:
13: /*
1.3 millert 14: * from: @(#)fdlibm.h 5.1 93/09/24
1.1 deraadt 15: */
16:
17: #ifndef _MATH_H_
18: #define _MATH_H_
19:
20: /*
21: * ANSI/POSIX
22: */
23: extern char __infinity[];
24: #define HUGE_VAL (*(double *) __infinity)
25:
26: /*
27: * XOPEN/SVID
28: */
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) */
43:
1.7 ! jason 44: #ifdef __vax__
! 45: #define MAXFLOAT ((float)1.7e38)
! 46: #else
1.1 deraadt 47: #define MAXFLOAT ((float)3.40282346638528860e+38)
1.7 ! jason 48: #endif
! 49:
1.1 deraadt 50: extern int signgam;
51:
52: #if !defined(_XOPEN_SOURCE)
53: enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
54:
55: #define _LIB_VERSION_TYPE enum fdversion
56: #define _LIB_VERSION _fdlib_version
57:
58: /* if global variable _LIB_VERSION is not desirable, one may
59: * change the following to be a constant by:
60: * #define _LIB_VERSION_TYPE const enum version
61: * In that case, after one initializes the value _LIB_VERSION (see
62: * s_lib_version.c) during compile time, it cannot be modified
63: * in the middle of a program
64: */
65: extern _LIB_VERSION_TYPE _LIB_VERSION;
66:
67: #define _IEEE_ fdlibm_ieee
68: #define _SVID_ fdlibm_svid
69: #define _XOPEN_ fdlibm_xopen
70: #define _POSIX_ fdlibm_posix
71:
1.5 millert 72: #ifndef __cplusplus
1.1 deraadt 73: struct exception {
74: int type;
75: char *name;
76: double arg1;
77: double arg2;
78: double retval;
79: };
1.3 millert 80: #endif
1.1 deraadt 81:
82: #define HUGE MAXFLOAT
83:
84: /*
85: * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
86: * (one may replace the following line by "#include <values.h>")
87: */
88:
89: #define X_TLOSS 1.41484755040568800000e+16
90:
91: #define DOMAIN 1
92: #define SING 2
93: #define OVERFLOW 3
94: #define UNDERFLOW 4
95: #define TLOSS 5
96: #define PLOSS 6
97:
98: #endif /* !_XOPEN_SOURCE */
99: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
100:
101:
102: #include <sys/cdefs.h>
103: __BEGIN_DECLS
104: /*
105: * ANSI/POSIX
106: */
1.6 millert 107: extern double acos(double);
108: extern double asin(double);
109: extern double atan(double);
110: extern double atan2(double, double);
111: extern double cos(double);
112: extern double sin(double);
113: extern double tan(double);
114:
115: extern double cosh(double);
116: extern double sinh(double);
117: extern double tanh(double);
118:
119: extern double exp(double);
120: extern double frexp(double, int *);
121: extern double ldexp(double, int);
122: extern double log(double);
123: extern double log10(double);
124: extern double modf(double, double *);
125:
126: extern double pow(double, double);
127: extern double sqrt(double);
128:
129: extern double ceil(double);
130: extern double fabs(double);
131: extern double floor(double);
132: extern double fmod(double, double);
1.1 deraadt 133:
134: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
1.6 millert 135: extern double erf(double);
136: extern double erfc(double);
137: extern double gamma(double);
138: extern double hypot(double, double);
139: extern int isinf(double);
140: extern int isnan(double);
141: extern int finite(double);
142: extern double j0(double);
143: extern double j1(double);
144: extern double jn(int, double);
145: extern double lgamma(double);
146: extern double y0(double);
147: extern double y1(double);
148: extern double yn(int, double);
1.1 deraadt 149:
150: #if !defined(_XOPEN_SOURCE)
1.6 millert 151: extern double acosh(double);
152: extern double asinh(double);
153: extern double atanh(double);
154: extern double cbrt(double);
155: extern double logb(double);
156: extern double nextafter(double, double);
157: extern double remainder(double, double);
158: extern double scalb(double, double);
1.1 deraadt 159:
1.3 millert 160: #ifdef __LIBM_PRIVATE
1.6 millert 161: extern int matherr(struct exception *);
1.3 millert 162: #endif
1.1 deraadt 163:
164: /*
165: * IEEE Test Vector
166: */
1.6 millert 167: extern double significand(double);
1.1 deraadt 168:
169: /*
170: * Functions callable from C, intended to support IEEE arithmetic.
171: */
1.6 millert 172: extern double copysign(double, double);
173: extern int ilogb(double);
174: extern double rint(double);
175: extern double scalbn(double, int);
1.1 deraadt 176:
177: /*
178: * BSD math library entry points
179: */
180: extern double cabs();
1.6 millert 181: extern double drem(double, double);
182: extern double expm1(double);
183: extern double log1p(double);
1.1 deraadt 184:
185: /*
186: * Reentrant version of gamma & lgamma; passes signgam back by reference
187: * as the second argument; user must allocate space for signgam.
188: */
189: #ifdef _REENTRANT
1.6 millert 190: extern double gamma_r(double, int *);
191: extern double lgamma_r(double, int *);
1.1 deraadt 192: #endif /* _REENTRANT */
193:
194:
195: /* float versions of ANSI/POSIX functions */
1.6 millert 196: extern float acosf(float);
197: extern float asinf(float);
198: extern float atanf(float);
199: extern float atan2f(float, float);
200: extern float cosf(float);
201: extern float sinf(float);
202: extern float tanf(float);
203:
204: extern float coshf(float);
205: extern float sinhf(float);
206: extern float tanhf(float);
207:
208: extern float expf(float);
209: extern float frexpf(float, int *);
210: extern float ldexpf(float, int);
211: extern float logf(float);
212: extern float log10f(float);
213: extern float modff(float, float *);
214:
215: extern float powf(float, float);
216: extern float sqrtf(float);
217:
218: extern float ceilf(float);
219: extern float fabsf(float);
220: extern float floorf(float);
221: extern float fmodf(float, float);
222:
223: extern float erff(float);
224: extern float erfcf(float);
225: extern float gammaf(float);
226: extern float hypotf(float, float);
227: extern int isinff(float);
228: extern int isnanf(float);
229: extern int finitef(float);
230: extern float j0f(float);
231: extern float j1f(float);
232: extern float jnf(int, float);
233: extern float lgammaf(float);
234: extern float y0f(float);
235: extern float y1f(float);
236: extern float ynf(int, float);
237:
238: extern float acoshf(float);
239: extern float asinhf(float);
240: extern float atanhf(float);
241: extern float cbrtf(float);
242: extern float logbf(float);
243: extern float nextafterf(float, float);
244: extern float remainderf(float, float);
245: extern float scalbf(float, float);
1.1 deraadt 246:
247: /*
248: * float version of IEEE Test Vector
249: */
1.6 millert 250: extern float significandf(float);
1.1 deraadt 251:
252: /*
253: * Float versions of functions callable from C, intended to support
254: * IEEE arithmetic.
255: */
1.6 millert 256: extern float copysignf(float, float);
257: extern int ilogbf(float);
258: extern float rintf(float);
259: extern float scalbnf(float, int);
1.1 deraadt 260:
261: /*
262: * float versions of BSD math library entry points
263: */
264: extern float cabsf ();
1.6 millert 265: extern float dremf(float, float);
266: extern float expm1f(float);
267: extern float log1pf(float);
1.1 deraadt 268:
269: /*
270: * Float versions of reentrant version of gamma & lgamma; passes
271: * signgam back by reference as the second argument; user must
272: * allocate space for signgam.
273: */
274: #ifdef _REENTRANT
1.6 millert 275: extern float gammaf_r(float, int *);
276: extern float lgammaf_r(float, int *);
1.1 deraadt 277: #endif /* _REENTRANT */
278:
279: #endif /* !_XOPEN_SOURCE */
280: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
281: __END_DECLS
282:
283: #endif /* _MATH_H_ */
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