Mercurial > flash_v2
annotate packages/language/c/libm/current/src/misc/standard.c @ 210:d2c90368aeef
Merge from eCos master repository on 2002-05-23-21:39:14-BST
| author | jlarmour |
|---|---|
| date | Thu, 23 May 2002 22:59:51 +0000 |
| parents | e0c0827131d1 |
| children |
| rev | line source |
|---|---|
| 0 | 1 //=========================================================================== |
| 2 // | |
| 3 // signgam.cxx | |
| 4 // | |
| 5 // Support sign of the gamma*() functions in Math library | |
| 6 // | |
| 7 //=========================================================================== | |
|
208
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
8 //####ECOSGPLCOPYRIGHTBEGIN#### |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
9 // ------------------------------------------- |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
10 // This file is part of eCos, the Embedded Configurable Operating System. |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
12 // |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
13 // eCos is free software; you can redistribute it and/or modify it under |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
14 // the terms of the GNU General Public License as published by the Free |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
15 // Software Foundation; either version 2 or (at your option) any later version. |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
16 // |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
20 // for more details. |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
21 // |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
22 // You should have received a copy of the GNU General Public License along |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
23 // with eCos; if not, write to the Free Software Foundation, Inc., |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
25 // |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
26 // As a special exception, if other files instantiate templates or use macros |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
27 // or inline functions from this file, or you compile this file and link it |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
28 // with other works to produce a work based on this file, this file does not |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
29 // by itself cause the resulting work to be covered by the GNU General Public |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
30 // License. However the source code for this file must still be made available |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
31 // in accordance with section (3) of the GNU General Public License. |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
32 // |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
33 // This exception does not invalidate any other reasons why a work based on |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
34 // this file might be covered by the GNU General Public License. |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
35 // |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
|
210
d2c90368aeef
Merge from eCos master repository on 2002-05-23-21:39:14-BST
jlarmour
parents:
208
diff
changeset
|
37 // at http://sources.redhat.com/ecos/ecos-license/ |
|
208
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
38 // ------------------------------------------- |
|
e0c0827131d1
Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
66
diff
changeset
|
39 //####ECOSGPLCOPYRIGHTEND#### |
| 0 | 40 //=========================================================================== |
| 41 //#####DESCRIPTIONBEGIN#### | |
| 42 // | |
| 2 | 43 // Author(s): jlarmour |
| 44 // Contributors: jlarmour | |
| 0 | 45 // Date: 1998-02-13 |
| 46 // Purpose: | |
| 47 // Description: Contains the accessor functions to get and set the stored sign | |
| 48 // of the gamma*() functions in the math library | |
| 49 // Usage: | |
| 50 // | |
| 51 //####DESCRIPTIONEND#### | |
| 52 // | |
| 53 //=========================================================================== | |
| 54 | |
| 55 /* @(#)k_standard.c 1.3 95/01/18 */ | |
| 56 /* | |
| 57 * ==================================================== | |
| 58 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
| 59 * | |
| 60 * Developed at SunSoft, a Sun Microsystems, Inc. business. | |
| 61 * Permission to use, copy, modify, and distribute this | |
| 62 * software is freely granted, provided that this notice | |
| 63 * is preserved. | |
| 64 * ==================================================== | |
| 65 * | |
| 66 */ | |
| 67 | |
| 68 // CONFIGURATION | |
| 69 | |
| 70 #include <pkgconf/libm.h> // Configuration header | |
| 71 | |
| 72 // Include the Math library? | |
| 73 #ifdef CYGPKG_LIBM | |
| 74 | |
| 75 // INCLUDES | |
| 76 | |
| 77 #include <cyg/infra/cyg_type.h> // Common type definitions and support | |
| 78 #include <cyg/infra/cyg_trac.h> // Tracing macros | |
| 79 | |
| 80 #include <math.h> // Main header for math library | |
| 81 #include "mathincl/fdlibm.h" // Internal header for math library | |
| 82 | |
| 83 #include <cyg/error/codes.h> // standard error codes | |
| 84 | |
| 85 #ifndef CYGSEM_LIBM_COMPAT_IEEE_ONLY | |
| 86 #include <errno.h> | |
| 87 #else | |
| 88 static int errno; // this whole file won't be used if we're IEEE only, but | |
| 89 // doing this keeps the compiler happy | |
| 90 #endif | |
| 91 | |
| 92 #ifdef CYGSEM_LIBM_USE_STDERR | |
| 93 | |
| 94 #include <stdio.h> | |
| 95 #define WRITE2(u,v) fputs(u, stderr) | |
| 96 | |
| 97 #else | |
| 98 | |
| 99 #define WRITE2(u,v) 0 | |
| 100 | |
| 101 #endif // ifdef CYGSEM_LIBM_USE_STDERR | |
| 102 | |
| 103 | |
| 104 // GLOBALS | |
| 105 | |
| 106 static const double zero = 0.0; | |
| 107 | |
| 108 // FUNCTIONS | |
| 109 | |
| 110 /* | |
| 111 * Standard conformance (non-IEEE) on exception cases. | |
| 112 * Mapping: | |
| 113 * 1 -- acos(|x|>1) | |
| 114 * 2 -- asin(|x|>1) | |
| 115 * 3 -- atan2(+-0,+-0) | |
| 116 * 4 -- hypot overflow | |
| 117 * 5 -- cosh overflow | |
| 118 * 6 -- exp overflow | |
| 119 * 7 -- exp underflow | |
| 120 * 8 -- y0(0) | |
| 121 * 9 -- y0(-ve) | |
| 122 * 10-- y1(0) | |
| 123 * 11-- y1(-ve) | |
| 124 * 12-- yn(0) | |
| 125 * 13-- yn(-ve) | |
| 126 * 14-- lgamma(finite) overflow | |
| 127 * 15-- lgamma(-integer) | |
| 128 * 16-- log(0) | |
| 129 * 17-- log(x<0) | |
| 130 * 18-- log10(0) | |
| 131 * 19-- log10(x<0) | |
| 132 * 20-- pow(0.0,0.0) | |
| 133 * 21-- pow(x,y) overflow | |
| 134 * 22-- pow(x,y) underflow | |
| 135 * 23-- pow(0,negative) | |
| 136 * 24-- pow(neg,non-integral) | |
| 137 * 25-- sinh(finite) overflow | |
| 138 * 26-- sqrt(negative) | |
| 139 * 27-- fmod(x,0) | |
| 140 * 28-- remainder(x,0) | |
| 141 * 29-- acosh(x<1) | |
| 142 * 30-- atanh(|x|>1) | |
| 143 * 31-- atanh(|x|=1) | |
| 144 * 32-- scalb overflow | |
| 145 * 33-- scalb underflow | |
| 146 * 34-- j0(|x|>X_TLOSS) | |
| 147 * 35-- y0(x>X_TLOSS) | |
| 148 * 36-- j1(|x|>X_TLOSS) | |
| 149 * 37-- y1(x>X_TLOSS) | |
| 150 * 38-- jn(|x|>X_TLOSS, n) | |
| 151 * 39-- yn(x>X_TLOSS, n) | |
| 152 * 40-- gamma(finite) overflow | |
| 153 * 41-- gamma(-integer) | |
| 154 * 42-- pow(NaN,0.0) | |
| 155 * 43-- ldexp overflow | |
| 156 * 44-- ldexp underflow | |
| 157 */ | |
| 158 | |
| 159 | |
| 160 double | |
| 161 __kernel_standard(double x, double y, int type) | |
| 162 { | |
| 163 struct exception exc; | |
| 164 | |
| 165 #ifdef CYGSEM_LIBM_USE_STDERR | |
| 166 (void) fflush(stdout); | |
| 167 #endif | |
| 168 exc.arg1 = x; | |
| 169 exc.arg2 = y; | |
| 170 switch(type) { | |
| 171 case 1: | |
| 172 /* acos(|x|>1) */ | |
| 173 exc.type = DOMAIN; | |
| 174 exc.name = "acos"; | |
| 175 exc.retval = zero; | |
| 176 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 177 errno = EDOM; | |
| 178 else if (!matherr(&exc)) { | |
| 179 if(cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 180 (void) WRITE2("acos: DOMAIN error\n", 19); | |
| 181 } | |
| 182 errno = EDOM; | |
| 183 } | |
| 184 break; | |
| 185 case 2: | |
| 186 /* asin(|x|>1) */ | |
| 187 exc.type = DOMAIN; | |
| 188 exc.name = "asin"; | |
| 189 exc.retval = zero; | |
| 190 if(cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 191 errno = EDOM; | |
| 192 else if (!matherr(&exc)) { | |
| 193 if(cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 194 (void) WRITE2("asin: DOMAIN error\n", 19); | |
| 195 } | |
| 196 errno = EDOM; | |
| 197 } | |
| 198 break; | |
| 199 case 3: | |
| 200 /* atan2(+-0,+-0) */ | |
| 201 exc.arg1 = y; | |
| 202 exc.arg2 = x; | |
| 203 exc.type = DOMAIN; | |
| 204 exc.name = "atan2"; | |
| 205 exc.retval = zero; | |
| 206 if(cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 207 errno = EDOM; | |
| 208 else if (!matherr(&exc)) { | |
| 209 if(cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 210 (void) WRITE2("atan2: DOMAIN error\n", 20); | |
| 211 } | |
| 212 errno = EDOM; | |
| 213 } | |
| 214 break; | |
| 215 case 4: | |
| 216 /* hypot(finite,finite) overflow */ | |
| 217 exc.type = OVERFLOW; | |
| 218 exc.name = "hypot"; | |
| 219 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 220 exc.retval = HUGE; | |
| 221 else | |
| 222 exc.retval = HUGE_VAL; | |
| 223 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 224 errno = ERANGE; | |
| 225 else if (!matherr(&exc)) { | |
| 226 errno = ERANGE; | |
| 227 } | |
| 228 break; | |
| 229 case 5: | |
| 230 /* cosh(finite) overflow */ | |
| 231 exc.type = OVERFLOW; | |
| 232 exc.name = "cosh"; | |
| 233 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 234 exc.retval = HUGE; | |
| 235 else | |
| 236 exc.retval = HUGE_VAL; | |
| 237 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 238 errno = ERANGE; | |
| 239 else if (!matherr(&exc)) { | |
| 240 errno = ERANGE; | |
| 241 } | |
| 242 break; | |
| 243 case 6: | |
| 244 /* exp(finite) overflow */ | |
| 245 exc.type = OVERFLOW; | |
| 246 exc.name = "exp"; | |
| 247 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 248 exc.retval = HUGE; | |
| 249 else | |
| 250 exc.retval = HUGE_VAL; | |
| 251 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 252 errno = ERANGE; | |
| 253 else if (!matherr(&exc)) { | |
| 254 errno = ERANGE; | |
| 255 } | |
| 256 break; | |
| 257 case 7: | |
| 258 /* exp(finite) underflow */ | |
| 259 exc.type = UNDERFLOW; | |
| 260 exc.name = "exp"; | |
| 261 exc.retval = zero; | |
| 262 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 263 errno = ERANGE; | |
| 264 else if (!matherr(&exc)) { | |
| 265 errno = ERANGE; | |
| 266 } | |
| 267 break; | |
| 268 case 8: | |
| 269 /* y0(0) = -inf */ | |
| 270 exc.type = DOMAIN; /* should be SING for IEEE */ | |
| 271 exc.name = "y0"; | |
| 272 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 273 exc.retval = -HUGE; | |
| 274 else | |
| 275 exc.retval = -HUGE_VAL; | |
| 276 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 277 errno = EDOM; | |
| 278 else if (!matherr(&exc)) { | |
| 279 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 280 (void) WRITE2("y0: DOMAIN error\n", 17); | |
| 281 } | |
| 282 errno = EDOM; | |
| 283 } | |
| 284 break; | |
| 285 case 9: | |
| 286 /* y0(x<0) = NaN */ | |
| 287 exc.type = DOMAIN; | |
| 288 exc.name = "y0"; | |
| 289 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 290 exc.retval = -HUGE; | |
| 291 else | |
| 292 exc.retval = -HUGE_VAL; | |
| 293 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 294 errno = EDOM; | |
| 295 else if (!matherr(&exc)) { | |
| 296 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 297 (void) WRITE2("y0: DOMAIN error\n", 17); | |
| 298 } | |
| 299 errno = EDOM; | |
| 300 } | |
| 301 break; | |
| 302 case 10: | |
| 303 /* y1(0) = -inf */ | |
| 304 exc.type = DOMAIN; /* should be SING for IEEE */ | |
| 305 exc.name = "y1"; | |
| 306 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 307 exc.retval = -HUGE; | |
| 308 else | |
| 309 exc.retval = -HUGE_VAL; | |
| 310 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 311 errno = EDOM; | |
| 312 else if (!matherr(&exc)) { | |
| 313 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 314 (void) WRITE2("y1: DOMAIN error\n", 17); | |
| 315 } | |
| 316 errno = EDOM; | |
| 317 } | |
| 318 break; | |
| 319 case 11: | |
| 320 /* y1(x<0) = NaN */ | |
| 321 exc.type = DOMAIN; | |
| 322 exc.name = "y1"; | |
| 323 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 324 exc.retval = -HUGE; | |
| 325 else | |
| 326 exc.retval = -HUGE_VAL; | |
| 327 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 328 errno = EDOM; | |
| 329 else if (!matherr(&exc)) { | |
| 330 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 331 (void) WRITE2("y1: DOMAIN error\n", 17); | |
| 332 } | |
| 333 errno = EDOM; | |
| 334 } | |
| 335 break; | |
| 336 case 12: | |
| 337 /* yn(n,0) = -inf */ | |
| 338 exc.type = DOMAIN; /* should be SING for IEEE */ | |
| 339 exc.name = "yn"; | |
| 340 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 341 exc.retval = -HUGE; | |
| 342 else | |
| 343 exc.retval = -HUGE_VAL; | |
| 344 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 345 errno = EDOM; | |
| 346 else if (!matherr(&exc)) { | |
| 347 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 348 (void) WRITE2("yn: DOMAIN error\n", 17); | |
| 349 } | |
| 350 errno = EDOM; | |
| 351 } | |
| 352 break; | |
| 353 case 13: | |
| 354 /* yn(x<0) = NaN */ | |
| 355 exc.type = DOMAIN; | |
| 356 exc.name = "yn"; | |
| 357 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 358 exc.retval = -HUGE; | |
| 359 else | |
| 360 exc.retval = -HUGE_VAL; | |
| 361 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 362 errno = EDOM; | |
| 363 else if (!matherr(&exc)) { | |
| 364 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 365 (void) WRITE2("yn: DOMAIN error\n", 17); | |
| 366 } | |
| 367 errno = EDOM; | |
| 368 } | |
| 369 break; | |
| 370 case 14: | |
| 371 /* lgamma(finite) overflow */ | |
| 372 exc.type = OVERFLOW; | |
| 373 exc.name = "lgamma"; | |
| 374 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 375 exc.retval = HUGE; | |
| 376 else | |
| 377 exc.retval = HUGE_VAL; | |
| 378 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 379 errno = ERANGE; | |
| 380 else if (!matherr(&exc)) { | |
| 381 errno = ERANGE; | |
| 382 } | |
| 383 break; | |
| 384 case 15: | |
| 385 /* lgamma(-integer) or lgamma(0) */ | |
| 386 exc.type = SING; | |
| 387 exc.name = "lgamma"; | |
| 388 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 389 exc.retval = HUGE; | |
| 390 else | |
| 391 exc.retval = HUGE_VAL; | |
| 392 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 393 errno = EDOM; | |
| 394 else if (!matherr(&exc)) { | |
| 395 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 396 (void) WRITE2("lgamma: SING error\n", 19); | |
| 397 } | |
| 398 errno = EDOM; | |
| 399 } | |
| 400 break; | |
| 401 case 16: | |
| 402 /* log(0) */ | |
| 403 exc.type = SING; | |
| 404 exc.name = "log"; | |
| 405 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 406 exc.retval = -HUGE; | |
| 407 else | |
| 408 exc.retval = -HUGE_VAL; | |
| 409 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 410 errno = ERANGE; | |
| 411 else if (!matherr(&exc)) { | |
| 412 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 413 (void) WRITE2("log: SING error\n", 16); | |
| 414 } | |
| 415 errno = EDOM; | |
| 416 } | |
| 417 break; | |
| 418 case 17: | |
| 419 /* log(x<0) */ | |
| 420 exc.type = DOMAIN; | |
| 421 exc.name = "log"; | |
| 422 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 423 exc.retval = -HUGE; | |
| 424 else | |
| 425 exc.retval = -HUGE_VAL; | |
| 426 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 427 errno = EDOM; | |
| 428 else if (!matherr(&exc)) { | |
| 429 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 430 (void) WRITE2("log: DOMAIN error\n", 18); | |
| 431 } | |
| 432 errno = EDOM; | |
| 433 } | |
| 434 break; | |
| 435 case 18: | |
| 436 /* log10(0) */ | |
| 437 exc.type = SING; | |
| 438 exc.name = "log10"; | |
| 439 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 440 exc.retval = -HUGE; | |
| 441 else | |
| 442 exc.retval = -HUGE_VAL; | |
| 443 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 444 errno = ERANGE; | |
| 445 else if (!matherr(&exc)) { | |
| 446 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 447 (void) WRITE2("log10: SING error\n", 18); | |
| 448 } | |
| 449 errno = EDOM; | |
| 450 } | |
| 451 break; | |
| 452 case 19: | |
| 453 /* log10(x<0) */ | |
| 454 exc.type = DOMAIN; | |
| 455 exc.name = "log10"; | |
| 456 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 457 exc.retval = -HUGE; | |
| 458 else | |
| 459 exc.retval = -HUGE_VAL; | |
| 460 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 461 errno = EDOM; | |
| 462 else if (!matherr(&exc)) { | |
| 463 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 464 (void) WRITE2("log10: DOMAIN error\n", 20); | |
| 465 } | |
| 466 errno = EDOM; | |
| 467 } | |
| 468 break; | |
| 469 case 20: | |
| 470 /* pow(0.0,0.0) */ | |
| 471 /* error only if cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID */ | |
| 472 exc.type = DOMAIN; | |
| 473 exc.name = "pow"; | |
| 474 exc.retval = zero; | |
| 475 if (cyg_libm_get_compat_mode() != CYGNUM_LIBM_COMPAT_SVID) exc.retval = 1.0; | |
| 476 else if (!matherr(&exc)) { | |
| 477 (void) WRITE2("pow(0,0): DOMAIN error\n", 23); | |
| 478 errno = EDOM; | |
| 479 } | |
| 480 break; | |
| 481 case 21: | |
| 482 /* pow(x,y) overflow */ | |
| 483 exc.type = OVERFLOW; | |
| 484 exc.name = "pow"; | |
| 485 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 486 exc.retval = HUGE; | |
| 487 y *= 0.5; | |
| 488 if(x<zero&&rint(y)!=y) exc.retval = -HUGE; | |
| 489 } else { | |
| 490 exc.retval = HUGE_VAL; | |
| 491 y *= 0.5; | |
| 492 if(x<zero&&rint(y)!=y) exc.retval = -HUGE_VAL; | |
| 493 } | |
| 494 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 495 errno = ERANGE; | |
| 496 else if (!matherr(&exc)) { | |
| 497 errno = ERANGE; | |
| 498 } | |
| 499 break; | |
| 500 case 22: | |
| 501 /* pow(x,y) underflow */ | |
| 502 exc.type = UNDERFLOW; | |
| 503 exc.name = "pow"; | |
| 504 exc.retval = zero; | |
| 505 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 506 errno = ERANGE; | |
| 507 else if (!matherr(&exc)) { | |
| 508 errno = ERANGE; | |
| 509 } | |
| 510 break; | |
| 511 case 23: | |
| 512 /* 0**neg */ | |
| 513 exc.type = DOMAIN; | |
| 514 exc.name = "pow"; | |
| 515 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 516 exc.retval = zero; | |
| 517 else | |
| 518 exc.retval = -HUGE_VAL; | |
| 519 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 520 errno = EDOM; | |
| 521 else if (!matherr(&exc)) { | |
| 522 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 523 (void) WRITE2("pow(0,neg): DOMAIN error\n", 25); | |
| 524 } | |
| 525 errno = EDOM; | |
| 526 } | |
| 527 break; | |
| 528 case 24: | |
| 529 /* neg**non-integral */ | |
| 530 exc.type = DOMAIN; | |
| 531 exc.name = "pow"; | |
| 532 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 533 exc.retval = zero; | |
| 534 else | |
| 535 exc.retval = zero/zero; /* X/Open allow NaN */ | |
| 536 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 537 errno = EDOM; | |
| 538 else if (!matherr(&exc)) { | |
| 539 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 540 (void) WRITE2("neg**non-integral: DOMAIN error\n", 32); | |
| 541 } | |
| 542 errno = EDOM; | |
| 543 } | |
| 544 break; | |
| 545 case 25: | |
| 546 /* sinh(finite) overflow */ | |
| 547 exc.type = OVERFLOW; | |
| 548 exc.name = "sinh"; | |
| 549 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 550 exc.retval = ( (x>zero) ? HUGE : -HUGE); | |
| 551 else | |
| 552 exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL); | |
| 553 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 554 errno = ERANGE; | |
| 555 else if (!matherr(&exc)) { | |
| 556 errno = ERANGE; | |
| 557 } | |
| 558 break; | |
| 559 case 26: | |
| 560 /* sqrt(x<0) */ | |
| 561 exc.type = DOMAIN; | |
| 562 exc.name = "sqrt"; | |
| 563 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 564 exc.retval = zero; | |
| 565 else | |
| 566 exc.retval = zero/zero; | |
| 567 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 568 errno = EDOM; | |
| 569 else if (!matherr(&exc)) { | |
| 570 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 571 (void) WRITE2("sqrt: DOMAIN error\n", 19); | |
| 572 } | |
| 573 errno = EDOM; | |
| 574 } | |
| 575 break; | |
| 576 case 27: | |
| 577 /* fmod(x,0) */ | |
| 578 exc.type = DOMAIN; | |
| 579 exc.name = "fmod"; | |
| 580 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 581 exc.retval = x; | |
| 582 else | |
| 583 exc.retval = zero/zero; | |
| 584 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 585 errno = EDOM; | |
| 586 else if (!matherr(&exc)) { | |
| 587 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 588 (void) WRITE2("fmod: DOMAIN error\n", 20); | |
| 589 } | |
| 590 errno = EDOM; | |
| 591 } | |
| 592 break; | |
| 593 case 28: | |
| 594 /* remainder(x,0) */ | |
| 595 exc.type = DOMAIN; | |
| 596 exc.name = "remainder"; | |
| 597 exc.retval = zero/zero; | |
| 598 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 599 errno = EDOM; | |
| 600 else if (!matherr(&exc)) { | |
| 601 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 602 (void) WRITE2("remainder: DOMAIN error\n", 24); | |
| 603 } | |
| 604 errno = EDOM; | |
| 605 } | |
| 606 break; | |
| 607 case 29: | |
| 608 /* acosh(x<1) */ | |
| 609 exc.type = DOMAIN; | |
| 610 exc.name = "acosh"; | |
| 611 exc.retval = zero/zero; | |
| 612 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 613 errno = EDOM; | |
| 614 else if (!matherr(&exc)) { | |
| 615 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 616 (void) WRITE2("acosh: DOMAIN error\n", 20); | |
| 617 } | |
| 618 errno = EDOM; | |
| 619 } | |
| 620 break; | |
| 621 case 30: | |
| 622 /* atanh(|x|>1) */ | |
| 623 exc.type = DOMAIN; | |
| 624 exc.name = "atanh"; | |
| 625 exc.retval = zero/zero; | |
| 626 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 627 errno = EDOM; | |
| 628 else if (!matherr(&exc)) { | |
| 629 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 630 (void) WRITE2("atanh: DOMAIN error\n", 20); | |
| 631 } | |
| 632 errno = EDOM; | |
| 633 } | |
| 634 break; | |
| 635 case 31: | |
| 636 /* atanh(|x|=1) */ | |
| 637 exc.type = SING; | |
| 638 exc.name = "atanh"; | |
| 639 exc.retval = x/zero; /* sign(x)*inf */ | |
| 640 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 641 errno = EDOM; | |
| 642 else if (!matherr(&exc)) { | |
| 643 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 644 (void) WRITE2("atanh: SING error\n", 18); | |
| 645 } | |
| 646 errno = EDOM; | |
| 647 } | |
| 648 break; | |
| 649 case 32: | |
| 650 /* scalb overflow; SVID also returns +-HUGE_VAL */ | |
| 651 exc.type = OVERFLOW; | |
| 652 exc.name = "scalb"; | |
| 653 exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL; | |
| 654 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 655 errno = ERANGE; | |
| 656 else if (!matherr(&exc)) { | |
| 657 errno = ERANGE; | |
| 658 } | |
| 659 break; | |
| 660 case 33: | |
| 661 /* scalb underflow */ | |
| 662 exc.type = UNDERFLOW; | |
| 663 exc.name = "scalb"; | |
| 664 exc.retval = copysign(zero,x); | |
| 665 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 666 errno = ERANGE; | |
| 667 else if (!matherr(&exc)) { | |
| 668 errno = ERANGE; | |
| 669 } | |
| 670 break; | |
| 671 case 34: | |
| 672 /* j0(|x|>X_TLOSS) */ | |
| 673 exc.type = TLOSS; | |
| 674 exc.name = "j0"; | |
| 675 exc.retval = zero; | |
| 676 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 677 errno = ERANGE; | |
| 678 else if (!matherr(&exc)) { | |
| 679 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 680 (void) WRITE2(exc.name, 2); | |
| 681 (void) WRITE2(": TLOSS error\n", 14); | |
| 682 } | |
| 683 errno = ERANGE; | |
| 684 } | |
| 685 break; | |
| 686 case 35: | |
| 687 /* y0(x>X_TLOSS) */ | |
| 688 exc.type = TLOSS; | |
| 689 exc.name = "y0"; | |
| 690 exc.retval = zero; | |
| 691 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 692 errno = ERANGE; | |
| 693 else if (!matherr(&exc)) { | |
| 694 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 695 (void) WRITE2(exc.name, 2); | |
| 696 (void) WRITE2(": TLOSS error\n", 14); | |
| 697 } | |
| 698 errno = ERANGE; | |
| 699 } | |
| 700 break; | |
| 701 case 36: | |
| 702 /* j1(|x|>X_TLOSS) */ | |
| 703 exc.type = TLOSS; | |
| 704 exc.name = "j1"; | |
| 705 exc.retval = zero; | |
| 706 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 707 errno = ERANGE; | |
| 708 else if (!matherr(&exc)) { | |
| 709 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 710 (void) WRITE2(exc.name, 2); | |
| 711 (void) WRITE2(": TLOSS error\n", 14); | |
| 712 } | |
| 713 errno = ERANGE; | |
| 714 } | |
| 715 break; | |
| 716 case 37: | |
| 717 /* y1(x>X_TLOSS) */ | |
| 718 exc.type = TLOSS; | |
| 719 exc.name = "y1"; | |
| 720 exc.retval = zero; | |
| 721 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 722 errno = ERANGE; | |
| 723 else if (!matherr(&exc)) { | |
| 724 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 725 (void) WRITE2(exc.name, 2); | |
| 726 (void) WRITE2(": TLOSS error\n", 14); | |
| 727 } | |
| 728 errno = ERANGE; | |
| 729 } | |
| 730 break; | |
| 731 case 38: | |
| 732 /* jn(|x|>X_TLOSS) */ | |
| 733 exc.type = TLOSS; | |
| 734 exc.name = "jn"; | |
| 735 exc.retval = zero; | |
| 736 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 737 errno = ERANGE; | |
| 738 else if (!matherr(&exc)) { | |
| 739 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 740 (void) WRITE2(exc.name, 2); | |
| 741 (void) WRITE2(": TLOSS error\n", 14); | |
| 742 } | |
| 743 errno = ERANGE; | |
| 744 } | |
| 745 break; | |
| 746 case 39: | |
| 747 /* yn(x>X_TLOSS) */ | |
| 748 exc.type = TLOSS; | |
| 749 exc.name = "yn"; | |
| 750 exc.retval = zero; | |
| 751 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 752 errno = ERANGE; | |
| 753 else if (!matherr(&exc)) { | |
| 754 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 755 (void) WRITE2(exc.name, 2); | |
| 756 (void) WRITE2(": TLOSS error\n", 14); | |
| 757 } | |
| 758 errno = ERANGE; | |
| 759 } | |
| 760 break; | |
| 761 case 40: | |
| 762 /* gamma(finite) overflow */ | |
| 763 exc.type = OVERFLOW; | |
| 764 exc.name = "gamma"; | |
| 765 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 766 exc.retval = HUGE; | |
| 767 else | |
| 768 exc.retval = HUGE_VAL; | |
| 769 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 770 errno = ERANGE; | |
| 771 else if (!matherr(&exc)) { | |
| 772 errno = ERANGE; | |
| 773 } | |
| 774 break; | |
| 775 case 41: | |
| 776 /* gamma(-integer) or gamma(0) */ | |
| 777 exc.type = SING; | |
| 778 exc.name = "gamma"; | |
| 779 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) | |
| 780 exc.retval = HUGE; | |
| 781 else | |
| 782 exc.retval = HUGE_VAL; | |
| 783 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 784 errno = EDOM; | |
| 785 else if (!matherr(&exc)) { | |
| 786 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID) { | |
| 787 (void) WRITE2("gamma: SING error\n", 18); | |
| 788 } | |
| 789 errno = EDOM; | |
| 790 } | |
| 791 break; | |
| 792 case 42: | |
| 793 /* pow(NaN,0.0) */ | |
| 794 /* error only if cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_SVID & CYGNUM_LIBM_COMPAT_XOPEN */ | |
| 795 exc.type = DOMAIN; | |
| 796 exc.name = "pow"; | |
| 797 exc.retval = x; | |
| 798 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_IEEE || | |
| 799 cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) exc.retval = 1.0; | |
| 800 else if (!matherr(&exc)) { | |
| 801 errno = EDOM; | |
| 802 } | |
| 803 break; | |
| 804 case 43: | |
| 805 /* ldexp overflow; SVID also returns +-HUGE_VAL */ | |
| 806 exc.type = OVERFLOW; | |
| 807 exc.name = "ldexp"; | |
| 808 exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL; | |
| 809 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 810 errno = ERANGE; | |
| 811 else if (!matherr(&exc)) { | |
| 812 errno = ERANGE; | |
| 813 } | |
| 814 break; | |
| 815 case 44: | |
| 816 /* ldexp underflow */ | |
| 817 exc.type = UNDERFLOW; | |
| 818 exc.name = "ldexp"; | |
| 819 exc.retval = copysign(zero,x); | |
| 820 if (cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_POSIX) | |
| 821 errno = ERANGE; | |
| 822 else if (!matherr(&exc)) { | |
| 823 errno = ERANGE; | |
| 824 } | |
| 825 break; | |
| 826 } | |
| 827 return exc.retval; | |
| 828 } | |
| 829 | |
| 830 #endif // ifdef CYGPKG_LIBM | |
| 831 | |
| 832 // EOF standard.c |