Annotation of src/include/math.h, Revision 1.9
1.9 ! espie 1: /* $OpenBSD: math.h,v 1.8 2003/06/26 22:40:27 jason 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)
1.9 ! espie 25:
! 26: /*
! 27: * C99
! 28: */
! 29:
! 30: /* XXX just appease the committee for now, needs proper defs... */
! 31:
! 32: typedef float float_t;
! 33: typedef double double_t;
! 34: #define FLT_EVAL_METHOD (-1)
1.1 deraadt 35:
36: /*
37: * XOPEN/SVID
38: */
39: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
40: #define M_E 2.7182818284590452354 /* e */
41: #define M_LOG2E 1.4426950408889634074 /* log 2e */
42: #define M_LOG10E 0.43429448190325182765 /* log 10e */
43: #define M_LN2 0.69314718055994530942 /* log e2 */
44: #define M_LN10 2.30258509299404568402 /* log e10 */
45: #define M_PI 3.14159265358979323846 /* pi */
46: #define M_PI_2 1.57079632679489661923 /* pi/2 */
47: #define M_PI_4 0.78539816339744830962 /* pi/4 */
48: #define M_1_PI 0.31830988618379067154 /* 1/pi */
49: #define M_2_PI 0.63661977236758134308 /* 2/pi */
50: #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
51: #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
52: #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
53:
1.7 jason 54: #ifdef __vax__
1.8 jason 55: #define MAXFLOAT ((float)1.70141173319264430e+38)
1.7 jason 56: #else
1.1 deraadt 57: #define MAXFLOAT ((float)3.40282346638528860e+38)
1.7 jason 58: #endif
59:
1.1 deraadt 60: extern int signgam;
61:
62: #if !defined(_XOPEN_SOURCE)
63: enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
64:
65: #define _LIB_VERSION_TYPE enum fdversion
66: #define _LIB_VERSION _fdlib_version
67:
68: /* if global variable _LIB_VERSION is not desirable, one may
69: * change the following to be a constant by:
70: * #define _LIB_VERSION_TYPE const enum version
71: * In that case, after one initializes the value _LIB_VERSION (see
72: * s_lib_version.c) during compile time, it cannot be modified
73: * in the middle of a program
74: */
75: extern _LIB_VERSION_TYPE _LIB_VERSION;
76:
77: #define _IEEE_ fdlibm_ieee
78: #define _SVID_ fdlibm_svid
79: #define _XOPEN_ fdlibm_xopen
80: #define _POSIX_ fdlibm_posix
81:
1.5 millert 82: #ifndef __cplusplus
1.1 deraadt 83: struct exception {
84: int type;
85: char *name;
86: double arg1;
87: double arg2;
88: double retval;
89: };
1.3 millert 90: #endif
1.1 deraadt 91:
92: #define HUGE MAXFLOAT
93:
94: /*
95: * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
96: * (one may replace the following line by "#include <values.h>")
97: */
98:
99: #define X_TLOSS 1.41484755040568800000e+16
100:
101: #define DOMAIN 1
102: #define SING 2
103: #define OVERFLOW 3
104: #define UNDERFLOW 4
105: #define TLOSS 5
106: #define PLOSS 6
107:
108: #endif /* !_XOPEN_SOURCE */
109: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
110:
111:
112: #include <sys/cdefs.h>
113: __BEGIN_DECLS
114: /*
115: * ANSI/POSIX
116: */
1.6 millert 117: extern double acos(double);
118: extern double asin(double);
119: extern double atan(double);
120: extern double atan2(double, double);
121: extern double cos(double);
122: extern double sin(double);
123: extern double tan(double);
124:
125: extern double cosh(double);
126: extern double sinh(double);
127: extern double tanh(double);
128:
129: extern double exp(double);
130: extern double frexp(double, int *);
131: extern double ldexp(double, int);
132: extern double log(double);
133: extern double log10(double);
134: extern double modf(double, double *);
135:
136: extern double pow(double, double);
137: extern double sqrt(double);
138:
139: extern double ceil(double);
140: extern double fabs(double);
141: extern double floor(double);
142: extern double fmod(double, double);
1.1 deraadt 143:
144: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
1.6 millert 145: extern double erf(double);
146: extern double erfc(double);
147: extern double gamma(double);
148: extern double hypot(double, double);
149: extern int isinf(double);
150: extern int isnan(double);
151: extern int finite(double);
152: extern double j0(double);
153: extern double j1(double);
154: extern double jn(int, double);
155: extern double lgamma(double);
156: extern double y0(double);
157: extern double y1(double);
158: extern double yn(int, double);
1.1 deraadt 159:
160: #if !defined(_XOPEN_SOURCE)
1.6 millert 161: extern double acosh(double);
162: extern double asinh(double);
163: extern double atanh(double);
164: extern double cbrt(double);
165: extern double logb(double);
166: extern double nextafter(double, double);
167: extern double remainder(double, double);
168: extern double scalb(double, double);
1.1 deraadt 169:
1.3 millert 170: #ifdef __LIBM_PRIVATE
1.6 millert 171: extern int matherr(struct exception *);
1.3 millert 172: #endif
1.1 deraadt 173:
174: /*
175: * IEEE Test Vector
176: */
1.6 millert 177: extern double significand(double);
1.1 deraadt 178:
179: /*
180: * Functions callable from C, intended to support IEEE arithmetic.
181: */
1.6 millert 182: extern double copysign(double, double);
183: extern int ilogb(double);
184: extern double rint(double);
185: extern double scalbn(double, int);
1.1 deraadt 186:
187: /*
188: * BSD math library entry points
189: */
190: extern double cabs();
1.6 millert 191: extern double drem(double, double);
192: extern double expm1(double);
193: extern double log1p(double);
1.1 deraadt 194:
195: /*
196: * Reentrant version of gamma & lgamma; passes signgam back by reference
197: * as the second argument; user must allocate space for signgam.
198: */
199: #ifdef _REENTRANT
1.6 millert 200: extern double gamma_r(double, int *);
201: extern double lgamma_r(double, int *);
1.1 deraadt 202: #endif /* _REENTRANT */
203:
204:
205: /* float versions of ANSI/POSIX functions */
1.6 millert 206: extern float acosf(float);
207: extern float asinf(float);
208: extern float atanf(float);
209: extern float atan2f(float, float);
210: extern float cosf(float);
211: extern float sinf(float);
212: extern float tanf(float);
213:
214: extern float coshf(float);
215: extern float sinhf(float);
216: extern float tanhf(float);
217:
218: extern float expf(float);
219: extern float frexpf(float, int *);
220: extern float ldexpf(float, int);
221: extern float logf(float);
222: extern float log10f(float);
223: extern float modff(float, float *);
224:
225: extern float powf(float, float);
226: extern float sqrtf(float);
227:
228: extern float ceilf(float);
229: extern float fabsf(float);
230: extern float floorf(float);
231: extern float fmodf(float, float);
232:
233: extern float erff(float);
234: extern float erfcf(float);
235: extern float gammaf(float);
236: extern float hypotf(float, float);
237: extern int isinff(float);
238: extern int isnanf(float);
239: extern int finitef(float);
240: extern float j0f(float);
241: extern float j1f(float);
242: extern float jnf(int, float);
243: extern float lgammaf(float);
244: extern float y0f(float);
245: extern float y1f(float);
246: extern float ynf(int, float);
247:
248: extern float acoshf(float);
249: extern float asinhf(float);
250: extern float atanhf(float);
251: extern float cbrtf(float);
252: extern float logbf(float);
253: extern float nextafterf(float, float);
254: extern float remainderf(float, float);
255: extern float scalbf(float, float);
1.1 deraadt 256:
257: /*
258: * float version of IEEE Test Vector
259: */
1.6 millert 260: extern float significandf(float);
1.1 deraadt 261:
262: /*
263: * Float versions of functions callable from C, intended to support
264: * IEEE arithmetic.
265: */
1.6 millert 266: extern float copysignf(float, float);
267: extern int ilogbf(float);
268: extern float rintf(float);
269: extern float scalbnf(float, int);
1.1 deraadt 270:
271: /*
272: * float versions of BSD math library entry points
273: */
274: extern float cabsf ();
1.6 millert 275: extern float dremf(float, float);
276: extern float expm1f(float);
277: extern float log1pf(float);
1.1 deraadt 278:
279: /*
280: * Float versions of reentrant version of gamma & lgamma; passes
281: * signgam back by reference as the second argument; user must
282: * allocate space for signgam.
283: */
284: #ifdef _REENTRANT
1.6 millert 285: extern float gammaf_r(float, int *);
286: extern float lgammaf_r(float, int *);
1.1 deraadt 287: #endif /* _REENTRANT */
288:
289: #endif /* !_XOPEN_SOURCE */
290: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
291: __END_DECLS
292:
293: #endif /* _MATH_H_ */
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