Annotation of src/include/math.h, Revision 1.13
1.13 ! brad 1: /* $OpenBSD: math.h,v 1.12 2006/05/05 20:10:25 otto 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:
1.11 millert 20: #include <sys/cdefs.h>
21:
1.1 deraadt 22: /*
23: * ANSI/POSIX
24: */
25: extern char __infinity[];
1.12 otto 26: #define HUGE_VAL (*(double *)(void *)__infinity)
1.9 espie 27:
28: /*
29: * C99
30: */
31:
32: /* XXX just appease the committee for now, needs proper defs... */
33:
34: typedef float float_t;
35: typedef double double_t;
36: #define FLT_EVAL_METHOD (-1)
1.1 deraadt 37:
38: /*
39: * XOPEN/SVID
40: */
1.11 millert 41: #if __BSD_VISIBLE || __XPG_VISIBLE
1.1 deraadt 42: #define M_E 2.7182818284590452354 /* e */
43: #define M_LOG2E 1.4426950408889634074 /* log 2e */
44: #define M_LOG10E 0.43429448190325182765 /* log 10e */
45: #define M_LN2 0.69314718055994530942 /* log e2 */
46: #define M_LN10 2.30258509299404568402 /* log e10 */
47: #define M_PI 3.14159265358979323846 /* pi */
48: #define M_PI_2 1.57079632679489661923 /* pi/2 */
49: #define M_PI_4 0.78539816339744830962 /* pi/4 */
50: #define M_1_PI 0.31830988618379067154 /* 1/pi */
51: #define M_2_PI 0.63661977236758134308 /* 2/pi */
52: #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
53: #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
54: #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
55:
1.7 jason 56: #ifdef __vax__
1.8 jason 57: #define MAXFLOAT ((float)1.70141173319264430e+38)
1.7 jason 58: #else
1.1 deraadt 59: #define MAXFLOAT ((float)3.40282346638528860e+38)
1.7 jason 60: #endif
61:
1.1 deraadt 62: extern int signgam;
1.11 millert 63: #endif /* __BSD_VISIBLE || __XPG_VISIBLE */
1.1 deraadt 64:
1.11 millert 65: #if __BSD_VISIBLE
1.1 deraadt 66: enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
67:
68: #define _LIB_VERSION_TYPE enum fdversion
69: #define _LIB_VERSION _fdlib_version
70:
71: /* if global variable _LIB_VERSION is not desirable, one may
72: * change the following to be a constant by:
73: * #define _LIB_VERSION_TYPE const enum version
74: * In that case, after one initializes the value _LIB_VERSION (see
75: * s_lib_version.c) during compile time, it cannot be modified
76: * in the middle of a program
77: */
78: extern _LIB_VERSION_TYPE _LIB_VERSION;
79:
80: #define _IEEE_ fdlibm_ieee
81: #define _SVID_ fdlibm_svid
82: #define _XOPEN_ fdlibm_xopen
83: #define _POSIX_ fdlibm_posix
84:
1.5 millert 85: #ifndef __cplusplus
1.1 deraadt 86: struct exception {
87: int type;
88: char *name;
89: double arg1;
90: double arg2;
91: double retval;
92: };
1.3 millert 93: #endif
1.1 deraadt 94:
95: #define HUGE MAXFLOAT
96:
97: /*
98: * set X_TLOSS = pi*2**52, which is possibly defined in <values.h>
99: * (one may replace the following line by "#include <values.h>")
100: */
101:
102: #define X_TLOSS 1.41484755040568800000e+16
103:
104: #define DOMAIN 1
105: #define SING 2
106: #define OVERFLOW 3
107: #define UNDERFLOW 4
108: #define TLOSS 5
109: #define PLOSS 6
110:
1.11 millert 111: #endif /* __BSD_VISIBLE */
1.1 deraadt 112:
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:
1.13 ! brad 144: extern double trunc(double);
! 145:
1.11 millert 146: #if __BSD_VISIBLE || __XPG_VISIBLE
1.6 millert 147: extern double erf(double);
148: extern double erfc(double);
149: extern double gamma(double);
150: extern double hypot(double, double);
151: extern int isinf(double);
152: extern int isnan(double);
153: extern int finite(double);
154: extern double j0(double);
155: extern double j1(double);
156: extern double jn(int, double);
157: extern double lgamma(double);
158: extern double y0(double);
159: extern double y1(double);
160: extern double yn(int, double);
1.1 deraadt 161:
1.11 millert 162: #if __BSD_VISIBLE || __XPG_VISIBLE >= 500
1.6 millert 163: extern double acosh(double);
164: extern double asinh(double);
165: extern double atanh(double);
166: extern double cbrt(double);
167: extern double logb(double);
168: extern double nextafter(double, double);
169: extern double remainder(double, double);
170: extern double scalb(double, double);
1.1 deraadt 171:
1.3 millert 172: #ifdef __LIBM_PRIVATE
1.6 millert 173: extern int matherr(struct exception *);
1.3 millert 174: #endif
1.1 deraadt 175:
176: /*
177: * IEEE Test Vector
178: */
1.6 millert 179: extern double significand(double);
1.1 deraadt 180:
181: /*
182: * Functions callable from C, intended to support IEEE arithmetic.
183: */
1.6 millert 184: extern double copysign(double, double);
185: extern int ilogb(double);
186: extern double rint(double);
1.10 otto 187: extern long int lrint(double);
188: extern long int lround(double);
189: extern long long int llrint(double);
190: extern long long int llround(double);
1.6 millert 191: extern double scalbn(double, int);
1.1 deraadt 192:
193: /*
194: * BSD math library entry points
195: */
196: extern double cabs();
1.6 millert 197: extern double drem(double, double);
198: extern double expm1(double);
199: extern double log1p(double);
1.1 deraadt 200:
201: /*
202: * Reentrant version of gamma & lgamma; passes signgam back by reference
203: * as the second argument; user must allocate space for signgam.
204: */
1.11 millert 205: #if __BSD_VISIBLE || defined(_REENTRANT)
1.6 millert 206: extern double gamma_r(double, int *);
207: extern double lgamma_r(double, int *);
1.11 millert 208: #endif /* __BSD_VISIBLE || _REENTRANT */
1.1 deraadt 209:
210:
211: /* float versions of ANSI/POSIX functions */
1.6 millert 212: extern float acosf(float);
213: extern float asinf(float);
214: extern float atanf(float);
215: extern float atan2f(float, float);
216: extern float cosf(float);
217: extern float sinf(float);
218: extern float tanf(float);
219:
220: extern float coshf(float);
221: extern float sinhf(float);
222: extern float tanhf(float);
223:
224: extern float expf(float);
225: extern float frexpf(float, int *);
226: extern float ldexpf(float, int);
227: extern float logf(float);
228: extern float log10f(float);
229: extern float modff(float, float *);
230:
231: extern float powf(float, float);
232: extern float sqrtf(float);
233:
234: extern float ceilf(float);
235: extern float fabsf(float);
236: extern float floorf(float);
237: extern float fmodf(float, float);
1.13 ! brad 238:
! 239: extern float truncf(float);
1.6 millert 240:
241: extern float erff(float);
242: extern float erfcf(float);
243: extern float gammaf(float);
244: extern float hypotf(float, float);
245: extern int isinff(float);
246: extern int isnanf(float);
247: extern int finitef(float);
248: extern float j0f(float);
249: extern float j1f(float);
250: extern float jnf(int, float);
251: extern float lgammaf(float);
252: extern float y0f(float);
253: extern float y1f(float);
254: extern float ynf(int, float);
255:
256: extern float acoshf(float);
257: extern float asinhf(float);
258: extern float atanhf(float);
259: extern float cbrtf(float);
260: extern float logbf(float);
261: extern float nextafterf(float, float);
262: extern float remainderf(float, float);
263: extern float scalbf(float, float);
1.1 deraadt 264:
265: /*
266: * float version of IEEE Test Vector
267: */
1.6 millert 268: extern float significandf(float);
1.1 deraadt 269:
270: /*
271: * Float versions of functions callable from C, intended to support
272: * IEEE arithmetic.
273: */
1.6 millert 274: extern float copysignf(float, float);
275: extern int ilogbf(float);
276: extern float rintf(float);
1.10 otto 277: extern long int lrintf(float);
278: extern long int lroundf(float);
279: extern long long int llrintf(float);
280: extern long long int llroundf(float);
1.6 millert 281: extern float scalbnf(float, int);
1.1 deraadt 282:
283: /*
284: * float versions of BSD math library entry points
285: */
286: extern float cabsf ();
1.6 millert 287: extern float dremf(float, float);
288: extern float expm1f(float);
289: extern float log1pf(float);
1.1 deraadt 290:
291: /*
292: * Float versions of reentrant version of gamma & lgamma; passes
293: * signgam back by reference as the second argument; user must
294: * allocate space for signgam.
295: */
1.11 millert 296: #if __BSD_VISIBLE || defined(_REENTRANT)
1.6 millert 297: extern float gammaf_r(float, int *);
298: extern float lgammaf_r(float, int *);
1.11 millert 299: #endif /* __BSD_VISIBLE || _REENTRANT */
1.1 deraadt 300:
1.11 millert 301: #endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 500 */
302: #endif /* __BSD_VISIBLE || __XPG_VISIBLE */
1.1 deraadt 303: __END_DECLS
304:
305: #endif /* _MATH_H_ */
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