Annotation of src/include/math.h, Revision 1.6
1.6 ! millert 1: /* $OpenBSD: math.h,v 1.5 2001/05/26 01:49:25 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:
44: #define MAXFLOAT ((float)3.40282346638528860e+38)
45: extern int signgam;
46:
47: #if !defined(_XOPEN_SOURCE)
48: enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix};
49:
50: #define _LIB_VERSION_TYPE enum fdversion
51: #define _LIB_VERSION _fdlib_version
52:
53: /* if global variable _LIB_VERSION is not desirable, one may
54: * change the following to be a constant by:
55: * #define _LIB_VERSION_TYPE const enum version
56: * In that case, after one initializes the value _LIB_VERSION (see
57: * s_lib_version.c) during compile time, it cannot be modified
58: * in the middle of a program
59: */
60: extern _LIB_VERSION_TYPE _LIB_VERSION;
61:
62: #define _IEEE_ fdlibm_ieee
63: #define _SVID_ fdlibm_svid
64: #define _XOPEN_ fdlibm_xopen
65: #define _POSIX_ fdlibm_posix
66:
1.5 millert 67: #ifndef __cplusplus
1.1 deraadt 68: struct exception {
69: int type;
70: char *name;
71: double arg1;
72: double arg2;
73: double retval;
74: };
1.3 millert 75: #endif
1.1 deraadt 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: */
1.6 ! millert 102: extern double acos(double);
! 103: extern double asin(double);
! 104: extern double atan(double);
! 105: extern double atan2(double, double);
! 106: extern double cos(double);
! 107: extern double sin(double);
! 108: extern double tan(double);
! 109:
! 110: extern double cosh(double);
! 111: extern double sinh(double);
! 112: extern double tanh(double);
! 113:
! 114: extern double exp(double);
! 115: extern double frexp(double, int *);
! 116: extern double ldexp(double, int);
! 117: extern double log(double);
! 118: extern double log10(double);
! 119: extern double modf(double, double *);
! 120:
! 121: extern double pow(double, double);
! 122: extern double sqrt(double);
! 123:
! 124: extern double ceil(double);
! 125: extern double fabs(double);
! 126: extern double floor(double);
! 127: extern double fmod(double, double);
1.1 deraadt 128:
129: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
1.6 ! millert 130: extern double erf(double);
! 131: extern double erfc(double);
! 132: extern double gamma(double);
! 133: extern double hypot(double, double);
! 134: extern int isinf(double);
! 135: extern int isnan(double);
! 136: extern int finite(double);
! 137: extern double j0(double);
! 138: extern double j1(double);
! 139: extern double jn(int, double);
! 140: extern double lgamma(double);
! 141: extern double y0(double);
! 142: extern double y1(double);
! 143: extern double yn(int, double);
1.1 deraadt 144:
145: #if !defined(_XOPEN_SOURCE)
1.6 ! millert 146: extern double acosh(double);
! 147: extern double asinh(double);
! 148: extern double atanh(double);
! 149: extern double cbrt(double);
! 150: extern double logb(double);
! 151: extern double nextafter(double, double);
! 152: extern double remainder(double, double);
! 153: extern double scalb(double, double);
1.1 deraadt 154:
1.3 millert 155: #ifdef __LIBM_PRIVATE
1.6 ! millert 156: extern int matherr(struct exception *);
1.3 millert 157: #endif
1.1 deraadt 158:
159: /*
160: * IEEE Test Vector
161: */
1.6 ! millert 162: extern double significand(double);
1.1 deraadt 163:
164: /*
165: * Functions callable from C, intended to support IEEE arithmetic.
166: */
1.6 ! millert 167: extern double copysign(double, double);
! 168: extern int ilogb(double);
! 169: extern double rint(double);
! 170: extern double scalbn(double, int);
1.1 deraadt 171:
172: /*
173: * BSD math library entry points
174: */
175: extern double cabs();
1.6 ! millert 176: extern double drem(double, double);
! 177: extern double expm1(double);
! 178: extern double log1p(double);
1.1 deraadt 179:
180: /*
181: * Reentrant version of gamma & lgamma; passes signgam back by reference
182: * as the second argument; user must allocate space for signgam.
183: */
184: #ifdef _REENTRANT
1.6 ! millert 185: extern double gamma_r(double, int *);
! 186: extern double lgamma_r(double, int *);
1.1 deraadt 187: #endif /* _REENTRANT */
188:
189:
190: /* float versions of ANSI/POSIX functions */
1.6 ! millert 191: extern float acosf(float);
! 192: extern float asinf(float);
! 193: extern float atanf(float);
! 194: extern float atan2f(float, float);
! 195: extern float cosf(float);
! 196: extern float sinf(float);
! 197: extern float tanf(float);
! 198:
! 199: extern float coshf(float);
! 200: extern float sinhf(float);
! 201: extern float tanhf(float);
! 202:
! 203: extern float expf(float);
! 204: extern float frexpf(float, int *);
! 205: extern float ldexpf(float, int);
! 206: extern float logf(float);
! 207: extern float log10f(float);
! 208: extern float modff(float, float *);
! 209:
! 210: extern float powf(float, float);
! 211: extern float sqrtf(float);
! 212:
! 213: extern float ceilf(float);
! 214: extern float fabsf(float);
! 215: extern float floorf(float);
! 216: extern float fmodf(float, float);
! 217:
! 218: extern float erff(float);
! 219: extern float erfcf(float);
! 220: extern float gammaf(float);
! 221: extern float hypotf(float, float);
! 222: extern int isinff(float);
! 223: extern int isnanf(float);
! 224: extern int finitef(float);
! 225: extern float j0f(float);
! 226: extern float j1f(float);
! 227: extern float jnf(int, float);
! 228: extern float lgammaf(float);
! 229: extern float y0f(float);
! 230: extern float y1f(float);
! 231: extern float ynf(int, float);
! 232:
! 233: extern float acoshf(float);
! 234: extern float asinhf(float);
! 235: extern float atanhf(float);
! 236: extern float cbrtf(float);
! 237: extern float logbf(float);
! 238: extern float nextafterf(float, float);
! 239: extern float remainderf(float, float);
! 240: extern float scalbf(float, float);
1.1 deraadt 241:
242: /*
243: * float version of IEEE Test Vector
244: */
1.6 ! millert 245: extern float significandf(float);
1.1 deraadt 246:
247: /*
248: * Float versions of functions callable from C, intended to support
249: * IEEE arithmetic.
250: */
1.6 ! millert 251: extern float copysignf(float, float);
! 252: extern int ilogbf(float);
! 253: extern float rintf(float);
! 254: extern float scalbnf(float, int);
1.1 deraadt 255:
256: /*
257: * float versions of BSD math library entry points
258: */
259: extern float cabsf ();
1.6 ! millert 260: extern float dremf(float, float);
! 261: extern float expm1f(float);
! 262: extern float log1pf(float);
1.1 deraadt 263:
264: /*
265: * Float versions of reentrant version of gamma & lgamma; passes
266: * signgam back by reference as the second argument; user must
267: * allocate space for signgam.
268: */
269: #ifdef _REENTRANT
1.6 ! millert 270: extern float gammaf_r(float, int *);
! 271: extern float lgammaf_r(float, int *);
1.1 deraadt 272: #endif /* _REENTRANT */
273:
274: #endif /* !_XOPEN_SOURCE */
275: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
276: __END_DECLS
277:
278: #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