The Android Open Source Project | b07e1d9 | 2009-03-03 19:29:30 -0800 | [diff] [blame] | 1 | |
| 2 | /* @(#)k_standard.c 1.3 95/01/18 */ |
| 3 | /* |
| 4 | * ==================================================== |
| 5 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| 6 | * |
| 7 | * Developed at SunSoft, a Sun Microsystems, Inc. business. |
| 8 | * Permission to use, copy, modify, and distribute this |
| 9 | * software is freely granted, provided that this notice |
| 10 | * is preserved. |
| 11 | * ==================================================== |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include "fdlibm.h" |
| 16 | #include <errno.h> |
| 17 | |
| 18 | #ifndef _USE_WRITE |
| 19 | #include <stdio.h> /* fputs(), stderr */ |
| 20 | #define WRITE2(u,v) fputs(u, stderr) |
| 21 | #else /* !defined(_USE_WRITE) */ |
| 22 | #include <unistd.h> /* write */ |
| 23 | #define WRITE2(u,v) write(2, u, v) |
| 24 | #undef fflush |
| 25 | #endif /* !defined(_USE_WRITE) */ |
| 26 | |
| 27 | static double zero = 0.0; /* used as const */ |
| 28 | |
| 29 | /* |
| 30 | * Standard conformance (non-IEEE) on exception cases. |
| 31 | * Mapping: |
| 32 | * 1 -- ieee_acos(|x|>1) |
| 33 | * 2 -- ieee_asin(|x|>1) |
| 34 | * 3 -- ieee_atan2(+-0,+-0) |
| 35 | * 4 -- hypot overflow |
| 36 | * 5 -- cosh overflow |
| 37 | * 6 -- exp overflow |
| 38 | * 7 -- exp underflow |
| 39 | * 8 -- ieee_y0(0) |
| 40 | * 9 -- ieee_y0(-ve) |
| 41 | * 10-- ieee_y1(0) |
| 42 | * 11-- ieee_y1(-ve) |
| 43 | * 12-- ieee_yn(0) |
| 44 | * 13-- ieee_yn(-ve) |
| 45 | * 14-- ieee_lgamma(finite) overflow |
| 46 | * 15-- ieee_lgamma(-integer) |
| 47 | * 16-- ieee_log(0) |
| 48 | * 17-- ieee_log(x<0) |
| 49 | * 18-- ieee_log10(0) |
| 50 | * 19-- ieee_log10(x<0) |
| 51 | * 20-- ieee_pow(0.0,0.0) |
| 52 | * 21-- ieee_pow(x,y) overflow |
| 53 | * 22-- ieee_pow(x,y) underflow |
| 54 | * 23-- ieee_pow(0,negative) |
| 55 | * 24-- ieee_pow(neg,non-integral) |
| 56 | * 25-- ieee_sinh(finite) overflow |
| 57 | * 26-- ieee_sqrt(negative) |
| 58 | * 27-- ieee_fmod(x,0) |
| 59 | * 28-- ieee_remainder(x,0) |
| 60 | * 29-- acosh(x<1) |
| 61 | * 30-- atanh(|x|>1) |
| 62 | * 31-- atanh(|x|=1) |
| 63 | * 32-- scalb overflow |
| 64 | * 33-- scalb underflow |
| 65 | * 34-- ieee_j0(|x|>X_TLOSS) |
| 66 | * 35-- ieee_y0(x>X_TLOSS) |
| 67 | * 36-- ieee_j1(|x|>X_TLOSS) |
| 68 | * 37-- ieee_y1(x>X_TLOSS) |
| 69 | * 38-- ieee_jn(|x|>X_TLOSS, n) |
| 70 | * 39-- ieee_yn(x>X_TLOSS, n) |
| 71 | * 40-- ieee_gamma(finite) overflow |
| 72 | * 41-- ieee_gamma(-integer) |
| 73 | * 42-- ieee_pow(NaN,0.0) |
| 74 | */ |
| 75 | |
| 76 | |
| 77 | #ifdef __STDC__ |
| 78 | double __kernel_standard(double x, double y, int type) |
| 79 | #else |
| 80 | double __kernel_standard(x,y,type) |
| 81 | double x,y; int type; |
| 82 | #endif |
| 83 | { |
| 84 | struct exception exc; |
| 85 | #ifndef HUGE_VAL /* this is the only routine that uses HUGE_VAL */ |
| 86 | #define HUGE_VAL inf |
| 87 | double inf = 0.0; |
| 88 | |
| 89 | __HI(inf) = 0x7ff00000; /* set inf to infinite */ |
| 90 | #endif |
| 91 | |
| 92 | #ifdef _USE_WRITE |
| 93 | (void) fflush(stdout); |
| 94 | #endif |
| 95 | exc.arg1 = x; |
| 96 | exc.arg2 = y; |
| 97 | switch(type) { |
| 98 | case 1: |
| 99 | /* ieee_acos(|x|>1) */ |
| 100 | exc.type = DOMAIN; |
| 101 | exc.name = "acos"; |
| 102 | exc.retval = zero; |
| 103 | if (_LIB_VERSION == _POSIX_) |
| 104 | errno = EDOM; |
| 105 | else if (!ieee_matherr(&exc)) { |
| 106 | if(_LIB_VERSION == _SVID_) { |
| 107 | (void) WRITE2("acos: DOMAIN error\n", 19); |
| 108 | } |
| 109 | errno = EDOM; |
| 110 | } |
| 111 | break; |
| 112 | case 2: |
| 113 | /* ieee_asin(|x|>1) */ |
| 114 | exc.type = DOMAIN; |
| 115 | exc.name = "asin"; |
| 116 | exc.retval = zero; |
| 117 | if(_LIB_VERSION == _POSIX_) |
| 118 | errno = EDOM; |
| 119 | else if (!ieee_matherr(&exc)) { |
| 120 | if(_LIB_VERSION == _SVID_) { |
| 121 | (void) WRITE2("asin: DOMAIN error\n", 19); |
| 122 | } |
| 123 | errno = EDOM; |
| 124 | } |
| 125 | break; |
| 126 | case 3: |
| 127 | /* ieee_atan2(+-0,+-0) */ |
| 128 | exc.arg1 = y; |
| 129 | exc.arg2 = x; |
| 130 | exc.type = DOMAIN; |
| 131 | exc.name = "atan2"; |
| 132 | exc.retval = zero; |
| 133 | if(_LIB_VERSION == _POSIX_) |
| 134 | errno = EDOM; |
| 135 | else if (!ieee_matherr(&exc)) { |
| 136 | if(_LIB_VERSION == _SVID_) { |
| 137 | (void) WRITE2("atan2: DOMAIN error\n", 20); |
| 138 | } |
| 139 | errno = EDOM; |
| 140 | } |
| 141 | break; |
| 142 | case 4: |
| 143 | /* ieee_hypot(finite,finite) overflow */ |
| 144 | exc.type = OVERFLOW; |
| 145 | exc.name = "hypot"; |
| 146 | if (_LIB_VERSION == _SVID_) |
| 147 | exc.retval = HUGE; |
| 148 | else |
| 149 | exc.retval = HUGE_VAL; |
| 150 | if (_LIB_VERSION == _POSIX_) |
| 151 | errno = ERANGE; |
| 152 | else if (!ieee_matherr(&exc)) { |
| 153 | errno = ERANGE; |
| 154 | } |
| 155 | break; |
| 156 | case 5: |
| 157 | /* ieee_cosh(finite) overflow */ |
| 158 | exc.type = OVERFLOW; |
| 159 | exc.name = "cosh"; |
| 160 | if (_LIB_VERSION == _SVID_) |
| 161 | exc.retval = HUGE; |
| 162 | else |
| 163 | exc.retval = HUGE_VAL; |
| 164 | if (_LIB_VERSION == _POSIX_) |
| 165 | errno = ERANGE; |
| 166 | else if (!ieee_matherr(&exc)) { |
| 167 | errno = ERANGE; |
| 168 | } |
| 169 | break; |
| 170 | case 6: |
| 171 | /* ieee_exp(finite) overflow */ |
| 172 | exc.type = OVERFLOW; |
| 173 | exc.name = "exp"; |
| 174 | if (_LIB_VERSION == _SVID_) |
| 175 | exc.retval = HUGE; |
| 176 | else |
| 177 | exc.retval = HUGE_VAL; |
| 178 | if (_LIB_VERSION == _POSIX_) |
| 179 | errno = ERANGE; |
| 180 | else if (!ieee_matherr(&exc)) { |
| 181 | errno = ERANGE; |
| 182 | } |
| 183 | break; |
| 184 | case 7: |
| 185 | /* ieee_exp(finite) underflow */ |
| 186 | exc.type = UNDERFLOW; |
| 187 | exc.name = "exp"; |
| 188 | exc.retval = zero; |
| 189 | if (_LIB_VERSION == _POSIX_) |
| 190 | errno = ERANGE; |
| 191 | else if (!ieee_matherr(&exc)) { |
| 192 | errno = ERANGE; |
| 193 | } |
| 194 | break; |
| 195 | case 8: |
| 196 | /* ieee_y0(0) = -inf */ |
| 197 | exc.type = DOMAIN; /* should be SING for IEEE */ |
| 198 | exc.name = "y0"; |
| 199 | if (_LIB_VERSION == _SVID_) |
| 200 | exc.retval = -HUGE; |
| 201 | else |
| 202 | exc.retval = -HUGE_VAL; |
| 203 | if (_LIB_VERSION == _POSIX_) |
| 204 | errno = EDOM; |
| 205 | else if (!ieee_matherr(&exc)) { |
| 206 | if (_LIB_VERSION == _SVID_) { |
| 207 | (void) WRITE2("y0: DOMAIN error\n", 17); |
| 208 | } |
| 209 | errno = EDOM; |
| 210 | } |
| 211 | break; |
| 212 | case 9: |
| 213 | /* ieee_y0(x<0) = NaN */ |
| 214 | exc.type = DOMAIN; |
| 215 | exc.name = "y0"; |
| 216 | if (_LIB_VERSION == _SVID_) |
| 217 | exc.retval = -HUGE; |
| 218 | else |
| 219 | exc.retval = -HUGE_VAL; |
| 220 | if (_LIB_VERSION == _POSIX_) |
| 221 | errno = EDOM; |
| 222 | else if (!ieee_matherr(&exc)) { |
| 223 | if (_LIB_VERSION == _SVID_) { |
| 224 | (void) WRITE2("y0: DOMAIN error\n", 17); |
| 225 | } |
| 226 | errno = EDOM; |
| 227 | } |
| 228 | break; |
| 229 | case 10: |
| 230 | /* ieee_y1(0) = -inf */ |
| 231 | exc.type = DOMAIN; /* should be SING for IEEE */ |
| 232 | exc.name = "y1"; |
| 233 | if (_LIB_VERSION == _SVID_) |
| 234 | exc.retval = -HUGE; |
| 235 | else |
| 236 | exc.retval = -HUGE_VAL; |
| 237 | if (_LIB_VERSION == _POSIX_) |
| 238 | errno = EDOM; |
| 239 | else if (!ieee_matherr(&exc)) { |
| 240 | if (_LIB_VERSION == _SVID_) { |
| 241 | (void) WRITE2("y1: DOMAIN error\n", 17); |
| 242 | } |
| 243 | errno = EDOM; |
| 244 | } |
| 245 | break; |
| 246 | case 11: |
| 247 | /* ieee_y1(x<0) = NaN */ |
| 248 | exc.type = DOMAIN; |
| 249 | exc.name = "y1"; |
| 250 | if (_LIB_VERSION == _SVID_) |
| 251 | exc.retval = -HUGE; |
| 252 | else |
| 253 | exc.retval = -HUGE_VAL; |
| 254 | if (_LIB_VERSION == _POSIX_) |
| 255 | errno = EDOM; |
| 256 | else if (!ieee_matherr(&exc)) { |
| 257 | if (_LIB_VERSION == _SVID_) { |
| 258 | (void) WRITE2("y1: DOMAIN error\n", 17); |
| 259 | } |
| 260 | errno = EDOM; |
| 261 | } |
| 262 | break; |
| 263 | case 12: |
| 264 | /* ieee_yn(n,0) = -inf */ |
| 265 | exc.type = DOMAIN; /* should be SING for IEEE */ |
| 266 | exc.name = "yn"; |
| 267 | if (_LIB_VERSION == _SVID_) |
| 268 | exc.retval = -HUGE; |
| 269 | else |
| 270 | exc.retval = -HUGE_VAL; |
| 271 | if (_LIB_VERSION == _POSIX_) |
| 272 | errno = EDOM; |
| 273 | else if (!ieee_matherr(&exc)) { |
| 274 | if (_LIB_VERSION == _SVID_) { |
| 275 | (void) WRITE2("yn: DOMAIN error\n", 17); |
| 276 | } |
| 277 | errno = EDOM; |
| 278 | } |
| 279 | break; |
| 280 | case 13: |
| 281 | /* ieee_yn(x<0) = NaN */ |
| 282 | exc.type = DOMAIN; |
| 283 | exc.name = "yn"; |
| 284 | if (_LIB_VERSION == _SVID_) |
| 285 | exc.retval = -HUGE; |
| 286 | else |
| 287 | exc.retval = -HUGE_VAL; |
| 288 | if (_LIB_VERSION == _POSIX_) |
| 289 | errno = EDOM; |
| 290 | else if (!ieee_matherr(&exc)) { |
| 291 | if (_LIB_VERSION == _SVID_) { |
| 292 | (void) WRITE2("yn: DOMAIN error\n", 17); |
| 293 | } |
| 294 | errno = EDOM; |
| 295 | } |
| 296 | break; |
| 297 | case 14: |
| 298 | /* ieee_lgamma(finite) overflow */ |
| 299 | exc.type = OVERFLOW; |
| 300 | exc.name = "lgamma"; |
| 301 | if (_LIB_VERSION == _SVID_) |
| 302 | exc.retval = HUGE; |
| 303 | else |
| 304 | exc.retval = HUGE_VAL; |
| 305 | if (_LIB_VERSION == _POSIX_) |
| 306 | errno = ERANGE; |
| 307 | else if (!ieee_matherr(&exc)) { |
| 308 | errno = ERANGE; |
| 309 | } |
| 310 | break; |
| 311 | case 15: |
| 312 | /* ieee_lgamma(-integer) or ieee_lgamma(0) */ |
| 313 | exc.type = SING; |
| 314 | exc.name = "lgamma"; |
| 315 | if (_LIB_VERSION == _SVID_) |
| 316 | exc.retval = HUGE; |
| 317 | else |
| 318 | exc.retval = HUGE_VAL; |
| 319 | if (_LIB_VERSION == _POSIX_) |
| 320 | errno = EDOM; |
| 321 | else if (!ieee_matherr(&exc)) { |
| 322 | if (_LIB_VERSION == _SVID_) { |
| 323 | (void) WRITE2("lgamma: SING error\n", 19); |
| 324 | } |
| 325 | errno = EDOM; |
| 326 | } |
| 327 | break; |
| 328 | case 16: |
| 329 | /* ieee_log(0) */ |
| 330 | exc.type = SING; |
| 331 | exc.name = "log"; |
| 332 | if (_LIB_VERSION == _SVID_) |
| 333 | exc.retval = -HUGE; |
| 334 | else |
| 335 | exc.retval = -HUGE_VAL; |
| 336 | if (_LIB_VERSION == _POSIX_) |
| 337 | errno = ERANGE; |
| 338 | else if (!ieee_matherr(&exc)) { |
| 339 | if (_LIB_VERSION == _SVID_) { |
| 340 | (void) WRITE2("log: SING error\n", 16); |
| 341 | } |
| 342 | errno = EDOM; |
| 343 | } |
| 344 | break; |
| 345 | case 17: |
| 346 | /* ieee_log(x<0) */ |
| 347 | exc.type = DOMAIN; |
| 348 | exc.name = "log"; |
| 349 | if (_LIB_VERSION == _SVID_) |
| 350 | exc.retval = -HUGE; |
| 351 | else |
| 352 | exc.retval = -HUGE_VAL; |
| 353 | if (_LIB_VERSION == _POSIX_) |
| 354 | errno = EDOM; |
| 355 | else if (!ieee_matherr(&exc)) { |
| 356 | if (_LIB_VERSION == _SVID_) { |
| 357 | (void) WRITE2("log: DOMAIN error\n", 18); |
| 358 | } |
| 359 | errno = EDOM; |
| 360 | } |
| 361 | break; |
| 362 | case 18: |
| 363 | /* ieee_log10(0) */ |
| 364 | exc.type = SING; |
| 365 | exc.name = "log10"; |
| 366 | if (_LIB_VERSION == _SVID_) |
| 367 | exc.retval = -HUGE; |
| 368 | else |
| 369 | exc.retval = -HUGE_VAL; |
| 370 | if (_LIB_VERSION == _POSIX_) |
| 371 | errno = ERANGE; |
| 372 | else if (!ieee_matherr(&exc)) { |
| 373 | if (_LIB_VERSION == _SVID_) { |
| 374 | (void) WRITE2("log10: SING error\n", 18); |
| 375 | } |
| 376 | errno = EDOM; |
| 377 | } |
| 378 | break; |
| 379 | case 19: |
| 380 | /* ieee_log10(x<0) */ |
| 381 | exc.type = DOMAIN; |
| 382 | exc.name = "log10"; |
| 383 | if (_LIB_VERSION == _SVID_) |
| 384 | exc.retval = -HUGE; |
| 385 | else |
| 386 | exc.retval = -HUGE_VAL; |
| 387 | if (_LIB_VERSION == _POSIX_) |
| 388 | errno = EDOM; |
| 389 | else if (!ieee_matherr(&exc)) { |
| 390 | if (_LIB_VERSION == _SVID_) { |
| 391 | (void) WRITE2("log10: DOMAIN error\n", 20); |
| 392 | } |
| 393 | errno = EDOM; |
| 394 | } |
| 395 | break; |
| 396 | case 20: |
| 397 | /* ieee_pow(0.0,0.0) */ |
| 398 | /* error only if _LIB_VERSION == _SVID_ */ |
| 399 | exc.type = DOMAIN; |
| 400 | exc.name = "pow"; |
| 401 | exc.retval = zero; |
| 402 | if (_LIB_VERSION != _SVID_) exc.retval = 1.0; |
| 403 | else if (!ieee_matherr(&exc)) { |
| 404 | (void) WRITE2("pow(0,0): DOMAIN error\n", 23); |
| 405 | errno = EDOM; |
| 406 | } |
| 407 | break; |
| 408 | case 21: |
| 409 | /* ieee_pow(x,y) overflow */ |
| 410 | exc.type = OVERFLOW; |
| 411 | exc.name = "pow"; |
| 412 | if (_LIB_VERSION == _SVID_) { |
| 413 | exc.retval = HUGE; |
| 414 | y *= 0.5; |
| 415 | if(x<zero&&ieee_rint(y)!=y) exc.retval = -HUGE; |
| 416 | } else { |
| 417 | exc.retval = HUGE_VAL; |
| 418 | y *= 0.5; |
| 419 | if(x<zero&&ieee_rint(y)!=y) exc.retval = -HUGE_VAL; |
| 420 | } |
| 421 | if (_LIB_VERSION == _POSIX_) |
| 422 | errno = ERANGE; |
| 423 | else if (!ieee_matherr(&exc)) { |
| 424 | errno = ERANGE; |
| 425 | } |
| 426 | break; |
| 427 | case 22: |
| 428 | /* ieee_pow(x,y) underflow */ |
| 429 | exc.type = UNDERFLOW; |
| 430 | exc.name = "pow"; |
| 431 | exc.retval = zero; |
| 432 | if (_LIB_VERSION == _POSIX_) |
| 433 | errno = ERANGE; |
| 434 | else if (!ieee_matherr(&exc)) { |
| 435 | errno = ERANGE; |
| 436 | } |
| 437 | break; |
| 438 | case 23: |
| 439 | /* 0**neg */ |
| 440 | exc.type = DOMAIN; |
| 441 | exc.name = "pow"; |
| 442 | if (_LIB_VERSION == _SVID_) |
| 443 | exc.retval = zero; |
| 444 | else |
| 445 | exc.retval = -HUGE_VAL; |
| 446 | if (_LIB_VERSION == _POSIX_) |
| 447 | errno = EDOM; |
| 448 | else if (!ieee_matherr(&exc)) { |
| 449 | if (_LIB_VERSION == _SVID_) { |
| 450 | (void) WRITE2("pow(0,neg): DOMAIN error\n", 25); |
| 451 | } |
| 452 | errno = EDOM; |
| 453 | } |
| 454 | break; |
| 455 | case 24: |
| 456 | /* neg**non-integral */ |
| 457 | exc.type = DOMAIN; |
| 458 | exc.name = "pow"; |
| 459 | if (_LIB_VERSION == _SVID_) |
| 460 | exc.retval = zero; |
| 461 | else |
| 462 | exc.retval = zero/zero; /* X/Open allow NaN */ |
| 463 | if (_LIB_VERSION == _POSIX_) |
| 464 | errno = EDOM; |
| 465 | else if (!ieee_matherr(&exc)) { |
| 466 | if (_LIB_VERSION == _SVID_) { |
| 467 | (void) WRITE2("neg**non-integral: DOMAIN error\n", 32); |
| 468 | } |
| 469 | errno = EDOM; |
| 470 | } |
| 471 | break; |
| 472 | case 25: |
| 473 | /* ieee_sinh(finite) overflow */ |
| 474 | exc.type = OVERFLOW; |
| 475 | exc.name = "sinh"; |
| 476 | if (_LIB_VERSION == _SVID_) |
| 477 | exc.retval = ( (x>zero) ? HUGE : -HUGE); |
| 478 | else |
| 479 | exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL); |
| 480 | if (_LIB_VERSION == _POSIX_) |
| 481 | errno = ERANGE; |
| 482 | else if (!ieee_matherr(&exc)) { |
| 483 | errno = ERANGE; |
| 484 | } |
| 485 | break; |
| 486 | case 26: |
| 487 | /* ieee_sqrt(x<0) */ |
| 488 | exc.type = DOMAIN; |
| 489 | exc.name = "sqrt"; |
| 490 | if (_LIB_VERSION == _SVID_) |
| 491 | exc.retval = zero; |
| 492 | else |
| 493 | exc.retval = zero/zero; |
| 494 | if (_LIB_VERSION == _POSIX_) |
| 495 | errno = EDOM; |
| 496 | else if (!ieee_matherr(&exc)) { |
| 497 | if (_LIB_VERSION == _SVID_) { |
| 498 | (void) WRITE2("sqrt: DOMAIN error\n", 19); |
| 499 | } |
| 500 | errno = EDOM; |
| 501 | } |
| 502 | break; |
| 503 | case 27: |
| 504 | /* ieee_fmod(x,0) */ |
| 505 | exc.type = DOMAIN; |
| 506 | exc.name = "fmod"; |
| 507 | if (_LIB_VERSION == _SVID_) |
| 508 | exc.retval = x; |
| 509 | else |
| 510 | exc.retval = zero/zero; |
| 511 | if (_LIB_VERSION == _POSIX_) |
| 512 | errno = EDOM; |
| 513 | else if (!ieee_matherr(&exc)) { |
| 514 | if (_LIB_VERSION == _SVID_) { |
| 515 | (void) WRITE2("fmod: DOMAIN error\n", 20); |
| 516 | } |
| 517 | errno = EDOM; |
| 518 | } |
| 519 | break; |
| 520 | case 28: |
| 521 | /* ieee_remainder(x,0) */ |
| 522 | exc.type = DOMAIN; |
| 523 | exc.name = "remainder"; |
| 524 | exc.retval = zero/zero; |
| 525 | if (_LIB_VERSION == _POSIX_) |
| 526 | errno = EDOM; |
| 527 | else if (!ieee_matherr(&exc)) { |
| 528 | if (_LIB_VERSION == _SVID_) { |
| 529 | (void) WRITE2("remainder: DOMAIN error\n", 24); |
| 530 | } |
| 531 | errno = EDOM; |
| 532 | } |
| 533 | break; |
| 534 | case 29: |
| 535 | /* acosh(x<1) */ |
| 536 | exc.type = DOMAIN; |
| 537 | exc.name = "acosh"; |
| 538 | exc.retval = zero/zero; |
| 539 | if (_LIB_VERSION == _POSIX_) |
| 540 | errno = EDOM; |
| 541 | else if (!ieee_matherr(&exc)) { |
| 542 | if (_LIB_VERSION == _SVID_) { |
| 543 | (void) WRITE2("acosh: DOMAIN error\n", 20); |
| 544 | } |
| 545 | errno = EDOM; |
| 546 | } |
| 547 | break; |
| 548 | case 30: |
| 549 | /* atanh(|x|>1) */ |
| 550 | exc.type = DOMAIN; |
| 551 | exc.name = "atanh"; |
| 552 | exc.retval = zero/zero; |
| 553 | if (_LIB_VERSION == _POSIX_) |
| 554 | errno = EDOM; |
| 555 | else if (!ieee_matherr(&exc)) { |
| 556 | if (_LIB_VERSION == _SVID_) { |
| 557 | (void) WRITE2("atanh: DOMAIN error\n", 20); |
| 558 | } |
| 559 | errno = EDOM; |
| 560 | } |
| 561 | break; |
| 562 | case 31: |
| 563 | /* atanh(|x|=1) */ |
| 564 | exc.type = SING; |
| 565 | exc.name = "atanh"; |
| 566 | exc.retval = x/zero; /* sign(x)*inf */ |
| 567 | if (_LIB_VERSION == _POSIX_) |
| 568 | errno = EDOM; |
| 569 | else if (!ieee_matherr(&exc)) { |
| 570 | if (_LIB_VERSION == _SVID_) { |
| 571 | (void) WRITE2("atanh: SING error\n", 18); |
| 572 | } |
| 573 | errno = EDOM; |
| 574 | } |
| 575 | break; |
| 576 | case 32: |
| 577 | /* scalb overflow; SVID also returns +-HUGE_VAL */ |
| 578 | exc.type = OVERFLOW; |
| 579 | exc.name = "scalb"; |
| 580 | exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL; |
| 581 | if (_LIB_VERSION == _POSIX_) |
| 582 | errno = ERANGE; |
| 583 | else if (!ieee_matherr(&exc)) { |
| 584 | errno = ERANGE; |
| 585 | } |
| 586 | break; |
| 587 | case 33: |
| 588 | /* scalb underflow */ |
| 589 | exc.type = UNDERFLOW; |
| 590 | exc.name = "scalb"; |
| 591 | exc.retval = ieee_copysign(zero,x); |
| 592 | if (_LIB_VERSION == _POSIX_) |
| 593 | errno = ERANGE; |
| 594 | else if (!ieee_matherr(&exc)) { |
| 595 | errno = ERANGE; |
| 596 | } |
| 597 | break; |
| 598 | case 34: |
| 599 | /* ieee_j0(|x|>X_TLOSS) */ |
| 600 | exc.type = TLOSS; |
| 601 | exc.name = "j0"; |
| 602 | exc.retval = zero; |
| 603 | if (_LIB_VERSION == _POSIX_) |
| 604 | errno = ERANGE; |
| 605 | else if (!ieee_matherr(&exc)) { |
| 606 | if (_LIB_VERSION == _SVID_) { |
| 607 | (void) WRITE2(exc.name, 2); |
| 608 | (void) WRITE2(": TLOSS error\n", 14); |
| 609 | } |
| 610 | errno = ERANGE; |
| 611 | } |
| 612 | break; |
| 613 | case 35: |
| 614 | /* ieee_y0(x>X_TLOSS) */ |
| 615 | exc.type = TLOSS; |
| 616 | exc.name = "y0"; |
| 617 | exc.retval = zero; |
| 618 | if (_LIB_VERSION == _POSIX_) |
| 619 | errno = ERANGE; |
| 620 | else if (!ieee_matherr(&exc)) { |
| 621 | if (_LIB_VERSION == _SVID_) { |
| 622 | (void) WRITE2(exc.name, 2); |
| 623 | (void) WRITE2(": TLOSS error\n", 14); |
| 624 | } |
| 625 | errno = ERANGE; |
| 626 | } |
| 627 | break; |
| 628 | case 36: |
| 629 | /* ieee_j1(|x|>X_TLOSS) */ |
| 630 | exc.type = TLOSS; |
| 631 | exc.name = "j1"; |
| 632 | exc.retval = zero; |
| 633 | if (_LIB_VERSION == _POSIX_) |
| 634 | errno = ERANGE; |
| 635 | else if (!ieee_matherr(&exc)) { |
| 636 | if (_LIB_VERSION == _SVID_) { |
| 637 | (void) WRITE2(exc.name, 2); |
| 638 | (void) WRITE2(": TLOSS error\n", 14); |
| 639 | } |
| 640 | errno = ERANGE; |
| 641 | } |
| 642 | break; |
| 643 | case 37: |
| 644 | /* ieee_y1(x>X_TLOSS) */ |
| 645 | exc.type = TLOSS; |
| 646 | exc.name = "y1"; |
| 647 | exc.retval = zero; |
| 648 | if (_LIB_VERSION == _POSIX_) |
| 649 | errno = ERANGE; |
| 650 | else if (!ieee_matherr(&exc)) { |
| 651 | if (_LIB_VERSION == _SVID_) { |
| 652 | (void) WRITE2(exc.name, 2); |
| 653 | (void) WRITE2(": TLOSS error\n", 14); |
| 654 | } |
| 655 | errno = ERANGE; |
| 656 | } |
| 657 | break; |
| 658 | case 38: |
| 659 | /* ieee_jn(|x|>X_TLOSS) */ |
| 660 | exc.type = TLOSS; |
| 661 | exc.name = "jn"; |
| 662 | exc.retval = zero; |
| 663 | if (_LIB_VERSION == _POSIX_) |
| 664 | errno = ERANGE; |
| 665 | else if (!ieee_matherr(&exc)) { |
| 666 | if (_LIB_VERSION == _SVID_) { |
| 667 | (void) WRITE2(exc.name, 2); |
| 668 | (void) WRITE2(": TLOSS error\n", 14); |
| 669 | } |
| 670 | errno = ERANGE; |
| 671 | } |
| 672 | break; |
| 673 | case 39: |
| 674 | /* ieee_yn(x>X_TLOSS) */ |
| 675 | exc.type = TLOSS; |
| 676 | exc.name = "yn"; |
| 677 | exc.retval = zero; |
| 678 | if (_LIB_VERSION == _POSIX_) |
| 679 | errno = ERANGE; |
| 680 | else if (!ieee_matherr(&exc)) { |
| 681 | if (_LIB_VERSION == _SVID_) { |
| 682 | (void) WRITE2(exc.name, 2); |
| 683 | (void) WRITE2(": TLOSS error\n", 14); |
| 684 | } |
| 685 | errno = ERANGE; |
| 686 | } |
| 687 | break; |
| 688 | case 40: |
| 689 | /* ieee_gamma(finite) overflow */ |
| 690 | exc.type = OVERFLOW; |
| 691 | exc.name = "gamma"; |
| 692 | if (_LIB_VERSION == _SVID_) |
| 693 | exc.retval = HUGE; |
| 694 | else |
| 695 | exc.retval = HUGE_VAL; |
| 696 | if (_LIB_VERSION == _POSIX_) |
| 697 | errno = ERANGE; |
| 698 | else if (!ieee_matherr(&exc)) { |
| 699 | errno = ERANGE; |
| 700 | } |
| 701 | break; |
| 702 | case 41: |
| 703 | /* ieee_gamma(-integer) or ieee_gamma(0) */ |
| 704 | exc.type = SING; |
| 705 | exc.name = "gamma"; |
| 706 | if (_LIB_VERSION == _SVID_) |
| 707 | exc.retval = HUGE; |
| 708 | else |
| 709 | exc.retval = HUGE_VAL; |
| 710 | if (_LIB_VERSION == _POSIX_) |
| 711 | errno = EDOM; |
| 712 | else if (!ieee_matherr(&exc)) { |
| 713 | if (_LIB_VERSION == _SVID_) { |
| 714 | (void) WRITE2("gamma: SING error\n", 18); |
| 715 | } |
| 716 | errno = EDOM; |
| 717 | } |
| 718 | break; |
| 719 | case 42: |
| 720 | /* ieee_pow(NaN,0.0) */ |
| 721 | /* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */ |
| 722 | exc.type = DOMAIN; |
| 723 | exc.name = "pow"; |
| 724 | exc.retval = x; |
| 725 | if (_LIB_VERSION == _IEEE_ || |
| 726 | _LIB_VERSION == _POSIX_) exc.retval = 1.0; |
| 727 | else if (!ieee_matherr(&exc)) { |
| 728 | errno = EDOM; |
| 729 | } |
| 730 | break; |
| 731 | } |
| 732 | return exc.retval; |
| 733 | } |