gl/math.in.h

   1 /* A GNU-like <math.h>.
   2
   3    Copyright (C) 2002-2003, 2007-2012 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _@GUARD_PREFIX@_MATH_H
  19
  20 #if __GNUC__ >= 3
  21 @PRAGMA_SYSTEM_HEADER@
  22 #endif
  23 @PRAGMA_COLUMNS@
  24
  25 /* The include_next requires a split double-inclusion guard.  */
  26 #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_MATH_H@
  27
  28 #ifndef _@GUARD_PREFIX@_MATH_H
  29 #define _@GUARD_PREFIX@_MATH_H
  30
  31
  32 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  33
  34 /* The definition of _GL_ARG_NONNULL is copied here.  */
  35
  36 /* The definition of _GL_WARN_ON_USE is copied here.  */
  37
  38 #ifdef __cplusplus
  39 /* Helper macros to define type-generic function FUNC as overloaded functions,
  40    rather than as macros like in C.  POSIX declares these with an argument of
  41    real-floating (that is, one of float, double, or long double).  */
  42 # define _GL_MATH_CXX_REAL_FLOATING_DECL_1(func) \
  43 static inline int                                                   \
  44 _gl_cxx_ ## func ## f (float f)                                     \
  45 {                                                                   \
  46   return func (f);                                                  \
  47 }                                                                   \
  48 static inline int                                                   \
  49 _gl_cxx_ ## func ## d (double d)                                    \
  50 {                                                                   \
  51   return func (d);                                                  \
  52 }                                                                   \
  53 static inline int                                                   \
  54 _gl_cxx_ ## func ## l (long double l)                               \
  55 {                                                                   \
  56   return func (l);                                                  \
  57 }
  58 # define _GL_MATH_CXX_REAL_FLOATING_DECL_2(func) \
  59 inline int                                                          \
  60 func (float f)                                                      \
  61 {                                                                   \
  62   return _gl_cxx_ ## func ## f (f);                                 \
  63 }                                                                   \
  64 inline int                                                          \
  65 func (double d)                                                     \
  66 {                                                                   \
  67   return _gl_cxx_ ## func ## d (d);                                 \
  68 }                                                                   \
  69 inline int                                                          \
  70 func (long double l)                                                \
  71 {                                                                   \
  72   return _gl_cxx_ ## func ## l (l);                                 \
  73 }
  74 #endif
  75
  76 /* Helper macros to define a portability warning for the
  77    classification macro FUNC called with VALUE.  POSIX declares the
  78    classification macros with an argument of real-floating (that is,
  79    one of float, double, or long double).  */
  80 #define _GL_WARN_REAL_FLOATING_DECL(func) \
  81 static inline int                                                   \
  82 rpl_ ## func ## f (float f)                                         \
  83 {                                                                   \
  84   return func (f);                                                  \
  85 }                                                                   \
  86 static inline int                                                   \
  87 rpl_ ## func ## d (double d)                                        \
  88 {                                                                   \
  89   return func (d);                                                  \
  90 }                                                                   \
  91 static inline int                                                   \
  92 rpl_ ## func ## l (long double l)                                   \
  93 {                                                                   \
  94   return func (l);                                                  \
  95 }                                                                   \
  96 _GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - "       \
  97                  "use gnulib module " #func " for portability");    \
  98 _GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - "       \
  99                  "use gnulib module " #func " for portability");    \
 100 _GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - "       \
 101                  "use gnulib module " #func " for portability")
 102 #define _GL_WARN_REAL_FLOATING_IMPL(func, value) \
 103   (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value)     \
 104    : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value)  \
 105    : rpl_ ## func ## l (value))
 106
 107
 108 #if @REPLACE_ITOLD@
 109 /* Pull in a function that fixes the 'int' to 'long double' conversion
 110    of glibc 2.7.  */
 111 _GL_EXTERN_C void _Qp_itoq (long double *, int);
 112 static void (*_gl_math_fix_itold) (long double *, int) = _Qp_itoq;
 113 #endif
 114
 115
 116 /* POSIX allows platforms that don't support NAN.  But all major
 117    machines in the past 15 years have supported something close to
 118    IEEE NaN, so we define this unconditionally.  We also must define
 119    it on platforms like Solaris 10, where NAN is present but defined
 120    as a function pointer rather than a floating point constant.  */
 121 #if !defined NAN || @REPLACE_NAN@
 122 # if !GNULIB_defined_NAN
 123 #  undef NAN
 124   /* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler
 125      choke on the expression 0.0 / 0.0.  */
 126 #  if defined __DECC || defined _MSC_VER
 127 static float
 128 _NaN ()
 129 {
 130   static float zero = 0.0f;
 131   return zero / zero;
 132 }
 133 #   define NAN (_NaN())
 134 #  else
 135 #   define NAN (0.0f / 0.0f)
 136 #  endif
 137 #  define GNULIB_defined_NAN 1
 138 # endif
 139 #endif
 140
 141 /* Solaris 10 defines HUGE_VAL, but as a function pointer rather
 142    than a floating point constant.  */
 143 #if @REPLACE_HUGE_VAL@
 144 # undef HUGE_VAL
 145 # define HUGE_VAL (1.0 / 0.0)
 146 #endif
 147
 148
 149 #if @GNULIB_ACOSF@
 150 # if !@HAVE_ACOSF@
 151 #  undef acosf
 152 _GL_FUNCDECL_SYS (acosf, float, (float x));
 153 # endif
 154 _GL_CXXALIAS_SYS (acosf, float, (float x));
 155 _GL_CXXALIASWARN (acosf);
 156 #elif defined GNULIB_POSIXCHECK
 157 # undef acosf
 158 # if HAVE_RAW_DECL_ACOSF
 159 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
 160                  "use gnulib module acosf for portability");
 161 # endif
 162 #endif
 163
 164 #if @GNULIB_ACOSL@
 165 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
 166 #  undef acosl
 167 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
 168 # endif
 169 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
 170 _GL_CXXALIASWARN (acosl);
 171 #elif defined GNULIB_POSIXCHECK
 172 # undef acosl
 173 # if HAVE_RAW_DECL_ACOSL
 174 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
 175                  "use gnulib module mathl for portability");
 176 # endif
 177 #endif
 178
 179
 180 #if @GNULIB_ASINF@
 181 # if !@HAVE_ASINF@
 182 #  undef asinf
 183 _GL_FUNCDECL_SYS (asinf, float, (float x));
 184 # endif
 185 _GL_CXXALIAS_SYS (asinf, float, (float x));
 186 _GL_CXXALIASWARN (asinf);
 187 #elif defined GNULIB_POSIXCHECK
 188 # undef asinf
 189 # if HAVE_RAW_DECL_ASINF
 190 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
 191                  "use gnulib module asinf for portability");
 192 # endif
 193 #endif
 194
 195 #if @GNULIB_ASINL@
 196 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
 197 #  undef asinl
 198 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
 199 # endif
 200 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
 201 _GL_CXXALIASWARN (asinl);
 202 #elif defined GNULIB_POSIXCHECK
 203 # undef asinl
 204 # if HAVE_RAW_DECL_ASINL
 205 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
 206                  "use gnulib module mathl for portability");
 207 # endif
 208 #endif
 209
 210
 211 #if @GNULIB_ATANF@
 212 # if !@HAVE_ATANF@
 213 #  undef atanf
 214 _GL_FUNCDECL_SYS (atanf, float, (float x));
 215 # endif
 216 _GL_CXXALIAS_SYS (atanf, float, (float x));
 217 _GL_CXXALIASWARN (atanf);
 218 #elif defined GNULIB_POSIXCHECK
 219 # undef atanf
 220 # if HAVE_RAW_DECL_ATANF
 221 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
 222                  "use gnulib module atanf for portability");
 223 # endif
 224 #endif
 225
 226 #if @GNULIB_ATANL@
 227 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
 228 #  undef atanl
 229 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
 230 # endif
 231 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
 232 _GL_CXXALIASWARN (atanl);
 233 #elif defined GNULIB_POSIXCHECK
 234 # undef atanl
 235 # if HAVE_RAW_DECL_ATANL
 236 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
 237                  "use gnulib module mathl for portability");
 238 # endif
 239 #endif
 240
 241
 242 #if @GNULIB_ATAN2F@
 243 # if !@HAVE_ATAN2F@
 244 #  undef atan2f
 245 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
 246 # endif
 247 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
 248 _GL_CXXALIASWARN (atan2f);
 249 #elif defined GNULIB_POSIXCHECK
 250 # undef atan2f
 251 # if HAVE_RAW_DECL_ATAN2F
 252 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
 253                  "use gnulib module atan2f for portability");
 254 # endif
 255 #endif
 256
 257
 258 #if @GNULIB_CEILF@
 259 # if @REPLACE_CEILF@
 260 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 261 #   undef ceilf
 262 #   define ceilf rpl_ceilf
 263 #  endif
 264 _GL_FUNCDECL_RPL (ceilf, float, (float x));
 265 _GL_CXXALIAS_RPL (ceilf, float, (float x));
 266 # else
 267 #  if !@HAVE_DECL_CEILF@
 268 #   undef ceilf
 269 _GL_FUNCDECL_SYS (ceilf, float, (float x));
 270 #  endif
 271 _GL_CXXALIAS_SYS (ceilf, float, (float x));
 272 # endif
 273 _GL_CXXALIASWARN (ceilf);
 274 #elif defined GNULIB_POSIXCHECK
 275 # undef ceilf
 276 # if HAVE_RAW_DECL_CEILF
 277 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
 278                  "use gnulib module ceilf for portability");
 279 # endif
 280 #endif
 281
 282 #if @GNULIB_CEIL@
 283 # if @REPLACE_CEIL@
 284 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 285 #   define ceil rpl_ceil
 286 #  endif
 287 _GL_FUNCDECL_RPL (ceil, double, (double x));
 288 _GL_CXXALIAS_RPL (ceil, double, (double x));
 289 # else
 290 _GL_CXXALIAS_SYS (ceil, double, (double x));
 291 # endif
 292 _GL_CXXALIASWARN (ceil);
 293 #endif
 294
 295 #if @GNULIB_CEILL@
 296 # if @REPLACE_CEILL@
 297 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 298 #   undef ceill
 299 #   define ceill rpl_ceill
 300 #  endif
 301 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
 302 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
 303 # else
 304 #  if !@HAVE_DECL_CEILL@
 305 #   undef ceill
 306 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
 307 #  endif
 308 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
 309 # endif
 310 _GL_CXXALIASWARN (ceill);
 311 #elif defined GNULIB_POSIXCHECK
 312 # undef ceill
 313 # if HAVE_RAW_DECL_CEILL
 314 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
 315                  "use gnulib module ceill for portability");
 316 # endif
 317 #endif
 318
 319
 320 #if @GNULIB_COPYSIGNF@
 321 # if !@HAVE_COPYSIGNF@
 322 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
 323 # endif
 324 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
 325 _GL_CXXALIASWARN (copysignf);
 326 #elif defined GNULIB_POSIXCHECK
 327 # undef copysignf
 328 # if HAVE_RAW_DECL_COPYSIGNF
 329 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
 330                  "use gnulib module copysignf for portability");
 331 # endif
 332 #endif
 333
 334 #if @GNULIB_COPYSIGN@
 335 # if !@HAVE_COPYSIGN@
 336 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
 337 # endif
 338 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
 339 _GL_CXXALIASWARN (copysign);
 340 #elif defined GNULIB_POSIXCHECK
 341 # undef copysign
 342 # if HAVE_RAW_DECL_COPYSIGN
 343 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
 344                  "use gnulib module copysign for portability");
 345 # endif
 346 #endif
 347
 348 #if @GNULIB_COPYSIGNL@
 349 # if !@HAVE_COPYSIGNL@
 350 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
 351 # endif
 352 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
 353 _GL_CXXALIASWARN (copysignl);
 354 #elif defined GNULIB_POSIXCHECK
 355 # undef copysignl
 356 # if HAVE_RAW_DECL_COPYSIGNL
 357 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
 358                  "use gnulib module copysignl for portability");
 359 # endif
 360 #endif
 361
 362
 363 #if @GNULIB_COSF@
 364 # if !@HAVE_COSF@
 365 #  undef cosf
 366 _GL_FUNCDECL_SYS (cosf, float, (float x));
 367 # endif
 368 _GL_CXXALIAS_SYS (cosf, float, (float x));
 369 _GL_CXXALIASWARN (cosf);
 370 #elif defined GNULIB_POSIXCHECK
 371 # undef cosf
 372 # if HAVE_RAW_DECL_COSF
 373 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
 374                  "use gnulib module cosf for portability");
 375 # endif
 376 #endif
 377
 378 #if @GNULIB_COSL@
 379 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
 380 #  undef cosl
 381 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
 382 # endif
 383 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
 384 _GL_CXXALIASWARN (cosl);
 385 #elif defined GNULIB_POSIXCHECK
 386 # undef cosl
 387 # if HAVE_RAW_DECL_COSL
 388 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
 389                  "use gnulib module mathl for portability");
 390 # endif
 391 #endif
 392
 393
 394 #if @GNULIB_COSHF@
 395 # if !@HAVE_COSHF@
 396 #  undef coshf
 397 _GL_FUNCDECL_SYS (coshf, float, (float x));
 398 # endif
 399 _GL_CXXALIAS_SYS (coshf, float, (float x));
 400 _GL_CXXALIASWARN (coshf);
 401 #elif defined GNULIB_POSIXCHECK
 402 # undef coshf
 403 # if HAVE_RAW_DECL_COSHF
 404 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
 405                  "use gnulib module coshf for portability");
 406 # endif
 407 #endif
 408
 409
 410 #if @GNULIB_EXPF@
 411 # if !@HAVE_EXPF@
 412 #  undef expf
 413 _GL_FUNCDECL_SYS (expf, float, (float x));
 414 # endif
 415 _GL_CXXALIAS_SYS (expf, float, (float x));
 416 _GL_CXXALIASWARN (expf);
 417 #elif defined GNULIB_POSIXCHECK
 418 # undef expf
 419 # if HAVE_RAW_DECL_EXPF
 420 _GL_WARN_ON_USE (expf, "expf is unportable - "
 421                  "use gnulib module expf for portability");
 422 # endif
 423 #endif
 424
 425 #if @GNULIB_EXPL@
 426 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
 427 #  undef expl
 428 _GL_FUNCDECL_SYS (expl, long double, (long double x));
 429 # endif
 430 _GL_CXXALIAS_SYS (expl, long double, (long double x));
 431 _GL_CXXALIASWARN (expl);
 432 #elif defined GNULIB_POSIXCHECK
 433 # undef expl
 434 # if HAVE_RAW_DECL_EXPL
 435 _GL_WARN_ON_USE (expl, "expl is unportable - "
 436                  "use gnulib module mathl for portability");
 437 # endif
 438 #endif
 439
 440
 441 #if @GNULIB_FABSF@
 442 # if !@HAVE_FABSF@
 443 #  undef fabsf
 444 _GL_FUNCDECL_SYS (fabsf, float, (float x));
 445 # endif
 446 _GL_CXXALIAS_SYS (fabsf, float, (float x));
 447 _GL_CXXALIASWARN (fabsf);
 448 #elif defined GNULIB_POSIXCHECK
 449 # undef fabsf
 450 # if HAVE_RAW_DECL_FABSF
 451 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
 452                  "use gnulib module fabsf for portability");
 453 # endif
 454 #endif
 455
 456 #if @GNULIB_FABSL@
 457 # if @REPLACE_FABSL@
 458 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 459 #   undef fabsl
 460 #   define fabsl rpl_fabsl
 461 #  endif
 462 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
 463 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
 464 # else
 465 #  if !@HAVE_FABSL@
 466 #   undef fabsl
 467 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
 468 #  endif
 469 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
 470 # endif
 471 _GL_CXXALIASWARN (fabsl);
 472 #elif defined GNULIB_POSIXCHECK
 473 # undef fabsl
 474 # if HAVE_RAW_DECL_FABSL
 475 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
 476                  "use gnulib module fabsl for portability");
 477 # endif
 478 #endif
 479
 480
 481 #if @GNULIB_FLOORF@
 482 # if @REPLACE_FLOORF@
 483 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 484 #   undef floorf
 485 #   define floorf rpl_floorf
 486 #  endif
 487 _GL_FUNCDECL_RPL (floorf, float, (float x));
 488 _GL_CXXALIAS_RPL (floorf, float, (float x));
 489 # else
 490 #  if !@HAVE_DECL_FLOORF@
 491 #   undef floorf
 492 _GL_FUNCDECL_SYS (floorf, float, (float x));
 493 #  endif
 494 _GL_CXXALIAS_SYS (floorf, float, (float x));
 495 # endif
 496 _GL_CXXALIASWARN (floorf);
 497 #elif defined GNULIB_POSIXCHECK
 498 # undef floorf
 499 # if HAVE_RAW_DECL_FLOORF
 500 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
 501                  "use gnulib module floorf for portability");
 502 # endif
 503 #endif
 504
 505 #if @GNULIB_FLOOR@
 506 # if @REPLACE_FLOOR@
 507 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 508 #   define floor rpl_floor
 509 #  endif
 510 _GL_FUNCDECL_RPL (floor, double, (double x));
 511 _GL_CXXALIAS_RPL (floor, double, (double x));
 512 # else
 513 _GL_CXXALIAS_SYS (floor, double, (double x));
 514 # endif
 515 _GL_CXXALIASWARN (floor);
 516 #endif
 517
 518 #if @GNULIB_FLOORL@
 519 # if @REPLACE_FLOORL@
 520 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 521 #   undef floorl
 522 #   define floorl rpl_floorl
 523 #  endif
 524 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
 525 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
 526 # else
 527 #  if !@HAVE_DECL_FLOORL@
 528 #   undef floorl
 529 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
 530 #  endif
 531 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
 532 # endif
 533 _GL_CXXALIASWARN (floorl);
 534 #elif defined GNULIB_POSIXCHECK
 535 # undef floorl
 536 # if HAVE_RAW_DECL_FLOORL
 537 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
 538                  "use gnulib module floorl for portability");
 539 # endif
 540 #endif
 541
 542
 543 #if @GNULIB_FMAF@
 544 # if @REPLACE_FMAF@
 545 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 546 #   undef fmaf
 547 #   define fmaf rpl_fmaf
 548 #  endif
 549 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
 550 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
 551 # else
 552 #  if !@HAVE_FMAF@
 553 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
 554 #  endif
 555 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
 556 # endif
 557 _GL_CXXALIASWARN (fmaf);
 558 #elif defined GNULIB_POSIXCHECK
 559 # undef fmaf
 560 # if HAVE_RAW_DECL_FMAF
 561 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
 562                  "use gnulib module fmaf for portability");
 563 # endif
 564 #endif
 565
 566 #if @GNULIB_FMA@
 567 # if @REPLACE_FMA@
 568 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 569 #   undef fma
 570 #   define fma rpl_fma
 571 #  endif
 572 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
 573 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
 574 # else
 575 #  if !@HAVE_FMA@
 576 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
 577 #  endif
 578 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
 579 # endif
 580 _GL_CXXALIASWARN (fma);
 581 #elif defined GNULIB_POSIXCHECK
 582 # undef fma
 583 # if HAVE_RAW_DECL_FMA
 584 _GL_WARN_ON_USE (fma, "fma is unportable - "
 585                  "use gnulib module fma for portability");
 586 # endif
 587 #endif
 588
 589 #if @GNULIB_FMAL@
 590 # if @REPLACE_FMAL@
 591 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 592 #   undef fmal
 593 #   define fmal rpl_fmal
 594 #  endif
 595 _GL_FUNCDECL_RPL (fmal, long double,
 596                   (long double x, long double y, long double z));
 597 _GL_CXXALIAS_RPL (fmal, long double,
 598                   (long double x, long double y, long double z));
 599 # else
 600 #  if !@HAVE_FMAL@
 601 _GL_FUNCDECL_SYS (fmal, long double,
 602                   (long double x, long double y, long double z));
 603 #  endif
 604 _GL_CXXALIAS_SYS (fmal, long double,
 605                   (long double x, long double y, long double z));
 606 # endif
 607 _GL_CXXALIASWARN (fmal);
 608 #elif defined GNULIB_POSIXCHECK
 609 # undef fmal
 610 # if HAVE_RAW_DECL_FMAL
 611 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
 612                  "use gnulib module fmal for portability");
 613 # endif
 614 #endif
 615
 616
 617 #if @GNULIB_FMODF@
 618 # if !@HAVE_FMODF@
 619 #  undef fmodf
 620 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
 621 # endif
 622 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
 623 _GL_CXXALIASWARN (fmodf);
 624 #elif defined GNULIB_POSIXCHECK
 625 # undef fmodf
 626 # if HAVE_RAW_DECL_FMODF
 627 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
 628                  "use gnulib module fmodf for portability");
 629 # endif
 630 #endif
 631
 632 #if @GNULIB_FMODL@
 633 # if @REPLACE_FMODL@
 634 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 635 #   undef fmodl
 636 #   define fmodl rpl_fmodl
 637 #  endif
 638 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
 639 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
 640 # else
 641 #  if !@HAVE_FMODL@
 642 #   undef fmodl
 643 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
 644 #  endif
 645 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
 646 # endif
 647 _GL_CXXALIASWARN (fmodl);
 648 #elif defined GNULIB_POSIXCHECK
 649 # undef fmodl
 650 # if HAVE_RAW_DECL_FMODL
 651 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
 652                  "use gnulib module fmodl for portability");
 653 # endif
 654 #endif
 655
 656
 657 /* Write x as
 658      x = mantissa * 2^exp
 659    where
 660      If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
 661      If x is zero: mantissa = x, exp = 0.
 662      If x is infinite or NaN: mantissa = x, exp unspecified.
 663    Store exp in *EXPPTR and return mantissa.  */
 664 #if @GNULIB_FREXPF@
 665 # if @REPLACE_FREXPF@
 666 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 667 #   undef frexpf
 668 #   define frexpf rpl_frexpf
 669 #  endif
 670 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
 671 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
 672 # else
 673 #  if !@HAVE_FREXPF@
 674 #   undef frexpf
 675 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
 676 #  endif
 677 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
 678 # endif
 679 _GL_CXXALIASWARN (frexpf);
 680 #elif defined GNULIB_POSIXCHECK
 681 # undef frexpf
 682 # if HAVE_RAW_DECL_FREXPF
 683 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
 684                  "use gnulib module frexpf for portability");
 685 # endif
 686 #endif
 687
 688 /* Write x as
 689      x = mantissa * 2^exp
 690    where
 691      If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
 692      If x is zero: mantissa = x, exp = 0.
 693      If x is infinite or NaN: mantissa = x, exp unspecified.
 694    Store exp in *EXPPTR and return mantissa.  */
 695 #if @GNULIB_FREXP@
 696 # if @REPLACE_FREXP@
 697 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 698 #   define frexp rpl_frexp
 699 #  endif
 700 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
 701 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
 702 # else
 703 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
 704 # endif
 705 _GL_CXXALIASWARN (frexp);
 706 #elif defined GNULIB_POSIXCHECK
 707 # undef frexp
 708 /* Assume frexp is always declared.  */
 709 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
 710                  "use gnulib module frexp for portability");
 711 #endif
 712
 713 /* Write x as
 714      x = mantissa * 2^exp
 715    where
 716      If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
 717      If x is zero: mantissa = x, exp = 0.
 718      If x is infinite or NaN: mantissa = x, exp unspecified.
 719    Store exp in *EXPPTR and return mantissa.  */
 720 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
 721 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 722 #  undef frexpl
 723 #  define frexpl rpl_frexpl
 724 # endif
 725 _GL_FUNCDECL_RPL (frexpl, long double,
 726                   (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
 727 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
 728 #else
 729 # if !@HAVE_DECL_FREXPL@
 730 _GL_FUNCDECL_SYS (frexpl, long double,
 731                   (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
 732 # endif
 733 # if @GNULIB_FREXPL@
 734 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
 735 # endif
 736 #endif
 737 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
 738 _GL_CXXALIASWARN (frexpl);
 739 #endif
 740 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
 741 # undef frexpl
 742 # if HAVE_RAW_DECL_FREXPL
 743 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
 744                  "use gnulib module frexpl for portability");
 745 # endif
 746 #endif
 747
 748
 749 /* Return x * 2^exp.  */
 750 #if @GNULIB_LDEXPF@
 751 # if !@HAVE_LDEXPF@
 752 #  undef ldexpf
 753 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
 754 # endif
 755 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
 756 _GL_CXXALIASWARN (ldexpf);
 757 #elif defined GNULIB_POSIXCHECK
 758 # undef ldexpf
 759 # if HAVE_RAW_DECL_LDEXPF
 760 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
 761                  "use gnulib module ldexpf for portability");
 762 # endif
 763 #endif
 764
 765 /* Return x * 2^exp.  */
 766 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
 767 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 768 #  undef ldexpl
 769 #  define ldexpl rpl_ldexpl
 770 # endif
 771 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
 772 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
 773 #else
 774 # if !@HAVE_DECL_LDEXPL@
 775 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
 776 # endif
 777 # if @GNULIB_LDEXPL@
 778 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
 779 # endif
 780 #endif
 781 #if @GNULIB_LDEXPL@
 782 _GL_CXXALIASWARN (ldexpl);
 783 #endif
 784 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
 785 # undef ldexpl
 786 # if HAVE_RAW_DECL_LDEXPL
 787 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
 788                  "use gnulib module ldexpl for portability");
 789 # endif
 790 #endif
 791
 792
 793 #if @GNULIB_LOGB@
 794 # if !@HAVE_DECL_LOGB@
 795 _GL_EXTERN_C double logb (double x);
 796 # endif
 797 #elif defined GNULIB_POSIXCHECK
 798 # undef logb
 799 # if HAVE_RAW_DECL_LOGB
 800 _GL_WARN_ON_USE (logb, "logb is unportable - "
 801                  "use gnulib module logb for portability");
 802 # endif
 803 #endif
 804
 805
 806 #if @GNULIB_LOGF@
 807 # if !@HAVE_LOGF@
 808 #  undef logf
 809 _GL_FUNCDECL_SYS (logf, float, (float x));
 810 # endif
 811 _GL_CXXALIAS_SYS (logf, float, (float x));
 812 _GL_CXXALIASWARN (logf);
 813 #elif defined GNULIB_POSIXCHECK
 814 # undef logf
 815 # if HAVE_RAW_DECL_LOGF
 816 _GL_WARN_ON_USE (logf, "logf is unportable - "
 817                  "use gnulib module logf for portability");
 818 # endif
 819 #endif
 820
 821 #if @GNULIB_LOGL@
 822 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
 823 #  undef logl
 824 _GL_FUNCDECL_SYS (logl, long double, (long double x));
 825 # endif
 826 _GL_CXXALIAS_SYS (logl, long double, (long double x));
 827 _GL_CXXALIASWARN (logl);
 828 #elif defined GNULIB_POSIXCHECK
 829 # undef logl
 830 # if HAVE_RAW_DECL_LOGL
 831 _GL_WARN_ON_USE (logl, "logl is unportable - "
 832                  "use gnulib module mathl for portability");
 833 # endif
 834 #endif
 835
 836
 837 #if @GNULIB_LOG10F@
 838 # if !@HAVE_LOG10F@
 839 #  undef log10f
 840 _GL_FUNCDECL_SYS (log10f, float, (float x));
 841 # endif
 842 _GL_CXXALIAS_SYS (log10f, float, (float x));
 843 _GL_CXXALIASWARN (log10f);
 844 #elif defined GNULIB_POSIXCHECK
 845 # undef log10f
 846 # if HAVE_RAW_DECL_LOG10F
 847 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
 848                  "use gnulib module log10f for portability");
 849 # endif
 850 #endif
 851
 852
 853 #if @GNULIB_MODFF@
 854 # if !@HAVE_MODFF@
 855 #  undef modff
 856 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
 857 # endif
 858 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
 859 _GL_CXXALIASWARN (modff);
 860 #elif defined GNULIB_POSIXCHECK
 861 # undef modff
 862 # if HAVE_RAW_DECL_MODFF
 863 _GL_WARN_ON_USE (modff, "modff is unportable - "
 864                  "use gnulib module modff for portability");
 865 # endif
 866 #endif
 867
 868 #if @GNULIB_MODFL@
 869 # if !@HAVE_MODFL@
 870 #  undef modfl
 871 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
 872                                       _GL_ARG_NONNULL ((2)));
 873 # endif
 874 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
 875 _GL_CXXALIASWARN (modfl);
 876 #elif defined GNULIB_POSIXCHECK
 877 # undef modfl
 878 # if HAVE_RAW_DECL_MODFL
 879 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
 880                  "use gnulib module modfl for portability");
 881 # endif
 882 #endif
 883
 884
 885 #if @GNULIB_POWF@
 886 # if !@HAVE_POWF@
 887 #  undef powf
 888 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
 889 # endif
 890 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
 891 _GL_CXXALIASWARN (powf);
 892 #elif defined GNULIB_POSIXCHECK
 893 # undef powf
 894 # if HAVE_RAW_DECL_POWF
 895 _GL_WARN_ON_USE (powf, "powf is unportable - "
 896                  "use gnulib module powf for portability");
 897 # endif
 898 #endif
 899
 900
 901 #if @GNULIB_REMAINDER@
 902 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
 903 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
 904 # endif
 905 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
 906 _GL_CXXALIASWARN (remainder);
 907 #elif defined GNULIB_POSIXCHECK
 908 # undef remainder
 909 # if HAVE_RAW_DECL_REMAINDER
 910 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
 911                  "use gnulib module remainder for portability");
 912 # endif
 913 #endif
 914
 915
 916 #if @GNULIB_RINTF@
 917 # if !@HAVE_RINTF@
 918 _GL_FUNCDECL_SYS (rintf, float, (float x));
 919 # endif
 920 _GL_CXXALIAS_SYS (rintf, float, (float x));
 921 _GL_CXXALIASWARN (rintf);
 922 #elif defined GNULIB_POSIXCHECK
 923 # undef rintf
 924 # if HAVE_RAW_DECL_RINTF
 925 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
 926                  "use gnulib module rintf for portability");
 927 # endif
 928 #endif
 929
 930 #if @GNULIB_RINT@
 931 # if !@HAVE_RINT@
 932 _GL_FUNCDECL_SYS (rint, double, (double x));
 933 # endif
 934 _GL_CXXALIAS_SYS (rint, double, (double x));
 935 _GL_CXXALIASWARN (rint);
 936 #elif defined GNULIB_POSIXCHECK
 937 # undef rint
 938 # if HAVE_RAW_DECL_RINT
 939 _GL_WARN_ON_USE (rint, "rint is unportable - "
 940                  "use gnulib module rint for portability");
 941 # endif
 942 #endif
 943
 944 #if @GNULIB_RINTL@
 945 # if !@HAVE_RINTL@
 946 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
 947 # endif
 948 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
 949 _GL_CXXALIASWARN (rintl);
 950 #elif defined GNULIB_POSIXCHECK
 951 # undef rintl
 952 # if HAVE_RAW_DECL_RINTL
 953 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
 954                  "use gnulib module rintl for portability");
 955 # endif
 956 #endif
 957
 958
 959 #if @GNULIB_ROUNDF@
 960 # if @REPLACE_ROUNDF@
 961 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 962 #   undef roundf
 963 #   define roundf rpl_roundf
 964 #  endif
 965 _GL_FUNCDECL_RPL (roundf, float, (float x));
 966 _GL_CXXALIAS_RPL (roundf, float, (float x));
 967 # else
 968 #  if !@HAVE_DECL_ROUNDF@
 969 _GL_FUNCDECL_SYS (roundf, float, (float x));
 970 #  endif
 971 _GL_CXXALIAS_SYS (roundf, float, (float x));
 972 # endif
 973 _GL_CXXALIASWARN (roundf);
 974 #elif defined GNULIB_POSIXCHECK
 975 # undef roundf
 976 # if HAVE_RAW_DECL_ROUNDF
 977 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
 978                  "use gnulib module roundf for portability");
 979 # endif
 980 #endif
 981
 982 #if @GNULIB_ROUND@
 983 # if @REPLACE_ROUND@
 984 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 985 #   undef round
 986 #   define round rpl_round
 987 #  endif
 988 _GL_FUNCDECL_RPL (round, double, (double x));
 989 _GL_CXXALIAS_RPL (round, double, (double x));
 990 # else
 991 #  if !@HAVE_DECL_ROUND@
 992 _GL_FUNCDECL_SYS (round, double, (double x));
 993 #  endif
 994 _GL_CXXALIAS_SYS (round, double, (double x));
 995 # endif
 996 _GL_CXXALIASWARN (round);
 997 #elif defined GNULIB_POSIXCHECK
 998 # undef round
 999 # if HAVE_RAW_DECL_ROUND
1000 _GL_WARN_ON_USE (round, "round is unportable - "
1001                  "use gnulib module round for portability");
1002 # endif
1003 #endif
1004
1005 #if @GNULIB_ROUNDL@
1006 # if @REPLACE_ROUNDL@
1007 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1008 #   undef roundl
1009 #   define roundl rpl_roundl
1010 #  endif
1011 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1012 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1013 # else
1014 #  if !@HAVE_DECL_ROUNDL@
1015 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1016 #  endif
1017 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1018 # endif
1019 _GL_CXXALIASWARN (roundl);
1020 #elif defined GNULIB_POSIXCHECK
1021 # undef roundl
1022 # if HAVE_RAW_DECL_ROUNDL
1023 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1024                  "use gnulib module roundl for portability");
1025 # endif
1026 #endif
1027
1028
1029 #if @GNULIB_SINF@
1030 # if !@HAVE_SINF@
1031 #  undef sinf
1032 _GL_FUNCDECL_SYS (sinf, float, (float x));
1033 # endif
1034 _GL_CXXALIAS_SYS (sinf, float, (float x));
1035 _GL_CXXALIASWARN (sinf);
1036 #elif defined GNULIB_POSIXCHECK
1037 # undef sinf
1038 # if HAVE_RAW_DECL_SINF
1039 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1040                  "use gnulib module sinf for portability");
1041 # endif
1042 #endif
1043
1044 #if @GNULIB_SINL@
1045 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1046 #  undef sinl
1047 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1048 # endif
1049 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1050 _GL_CXXALIASWARN (sinl);
1051 #elif defined GNULIB_POSIXCHECK
1052 # undef sinl
1053 # if HAVE_RAW_DECL_SINL
1054 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1055                  "use gnulib module mathl for portability");
1056 # endif
1057 #endif
1058
1059
1060 #if @GNULIB_SINHF@
1061 # if !@HAVE_SINHF@
1062 #  undef sinhf
1063 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1064 # endif
1065 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1066 _GL_CXXALIASWARN (sinhf);
1067 #elif defined GNULIB_POSIXCHECK
1068 # undef sinhf
1069 # if HAVE_RAW_DECL_SINHF
1070 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1071                  "use gnulib module sinhf for portability");
1072 # endif
1073 #endif
1074
1075
1076 #if @GNULIB_SQRTF@
1077 # if !@HAVE_SQRTF@
1078 #  undef sqrtf
1079 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1080 # endif
1081 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1082 _GL_CXXALIASWARN (sqrtf);
1083 #elif defined GNULIB_POSIXCHECK
1084 # undef sqrtf
1085 # if HAVE_RAW_DECL_SQRTF
1086 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1087                  "use gnulib module sqrtf for portability");
1088 # endif
1089 #endif
1090
1091 #if @GNULIB_SQRTL@
1092 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1093 #  undef sqrtl
1094 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1095 # endif
1096 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1097 _GL_CXXALIASWARN (sqrtl);
1098 #elif defined GNULIB_POSIXCHECK
1099 # undef sqrtl
1100 # if HAVE_RAW_DECL_SQRTL
1101 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1102                  "use gnulib module mathl for portability");
1103 # endif
1104 #endif
1105
1106
1107 #if @GNULIB_TANF@
1108 # if !@HAVE_TANF@
1109 #  undef tanf
1110 _GL_FUNCDECL_SYS (tanf, float, (float x));
1111 # endif
1112 _GL_CXXALIAS_SYS (tanf, float, (float x));
1113 _GL_CXXALIASWARN (tanf);
1114 #elif defined GNULIB_POSIXCHECK
1115 # undef tanf
1116 # if HAVE_RAW_DECL_TANF
1117 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1118                  "use gnulib module tanf for portability");
1119 # endif
1120 #endif
1121
1122 #if @GNULIB_TANL@
1123 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1124 #  undef tanl
1125 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1126 # endif
1127 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1128 _GL_CXXALIASWARN (tanl);
1129 #elif defined GNULIB_POSIXCHECK
1130 # undef tanl
1131 # if HAVE_RAW_DECL_TANL
1132 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1133                  "use gnulib module mathl for portability");
1134 # endif
1135 #endif
1136
1137
1138 #if @GNULIB_TANHF@
1139 # if !@HAVE_TANHF@
1140 #  undef tanhf
1141 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1142 # endif
1143 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1144 _GL_CXXALIASWARN (tanhf);
1145 #elif defined GNULIB_POSIXCHECK
1146 # undef tanhf
1147 # if HAVE_RAW_DECL_TANHF
1148 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1149                  "use gnulib module tanhf for portability");
1150 # endif
1151 #endif
1152
1153
1154 #if @GNULIB_TRUNCF@
1155 # if @REPLACE_TRUNCF@
1156 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1157 #   define truncf rpl_truncf
1158 #  endif
1159 _GL_FUNCDECL_RPL (truncf, float, (float x));
1160 _GL_CXXALIAS_RPL (truncf, float, (float x));
1161 # else
1162 #  if !@HAVE_DECL_TRUNCF@
1163 _GL_FUNCDECL_SYS (truncf, float, (float x));
1164 #  endif
1165 _GL_CXXALIAS_SYS (truncf, float, (float x));
1166 # endif
1167 _GL_CXXALIASWARN (truncf);
1168 #elif defined GNULIB_POSIXCHECK
1169 # undef truncf
1170 # if HAVE_RAW_DECL_TRUNCF
1171 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1172                  "use gnulib module truncf for portability");
1173 # endif
1174 #endif
1175
1176 #if @GNULIB_TRUNC@
1177 # if @REPLACE_TRUNC@
1178 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1179 #   define trunc rpl_trunc
1180 #  endif
1181 _GL_FUNCDECL_RPL (trunc, double, (double x));
1182 _GL_CXXALIAS_RPL (trunc, double, (double x));
1183 # else
1184 #  if !@HAVE_DECL_TRUNC@
1185 _GL_FUNCDECL_SYS (trunc, double, (double x));
1186 #  endif
1187 _GL_CXXALIAS_SYS (trunc, double, (double x));
1188 # endif
1189 _GL_CXXALIASWARN (trunc);
1190 #elif defined GNULIB_POSIXCHECK
1191 # undef trunc
1192 # if HAVE_RAW_DECL_TRUNC
1193 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1194                  "use gnulib module trunc for portability");
1195 # endif
1196 #endif
1197
1198 #if @GNULIB_TRUNCL@
1199 # if @REPLACE_TRUNCL@
1200 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1201 #   undef truncl
1202 #   define truncl rpl_truncl
1203 #  endif
1204 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1205 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1206 # else
1207 #  if !@HAVE_DECL_TRUNCL@
1208 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1209 #  endif
1210 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1211 # endif
1212 _GL_CXXALIASWARN (truncl);
1213 #elif defined GNULIB_POSIXCHECK
1214 # undef truncl
1215 # if HAVE_RAW_DECL_TRUNCL
1216 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1217                  "use gnulib module truncl for portability");
1218 # endif
1219 #endif
1220
1221
1222 /* Definitions of function-like macros come here, after the function
1223    declarations.  */
1224
1225
1226 #if @GNULIB_ISFINITE@
1227 # if @REPLACE_ISFINITE@
1228 _GL_EXTERN_C int gl_isfinitef (float x);
1229 _GL_EXTERN_C int gl_isfinited (double x);
1230 _GL_EXTERN_C int gl_isfinitel (long double x);
1231 #  undef isfinite
1232 #  define isfinite(x) \
1233    (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1234     sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1235     gl_isfinitef (x))
1236 # endif
1237 # ifdef __cplusplus
1238 #  ifdef isfinite
1239 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1240 #   undef isfinite
1241 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1242 #  endif
1243 # endif
1244 #elif defined GNULIB_POSIXCHECK
1245 # if defined isfinite
1246 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1247 #  undef isfinite
1248 #  define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1249 # endif
1250 #endif
1251
1252
1253 #if @GNULIB_ISINF@
1254 # if @REPLACE_ISINF@
1255 _GL_EXTERN_C int gl_isinff (float x);
1256 _GL_EXTERN_C int gl_isinfd (double x);
1257 _GL_EXTERN_C int gl_isinfl (long double x);
1258 #  undef isinf
1259 #  define isinf(x) \
1260    (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1261     sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1262     gl_isinff (x))
1263 # endif
1264 # ifdef __cplusplus
1265 #  ifdef isinf
1266 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1267 #   undef isinf
1268 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1269 #  endif
1270 # endif
1271 #elif defined GNULIB_POSIXCHECK
1272 # if defined isinf
1273 _GL_WARN_REAL_FLOATING_DECL (isinf);
1274 #  undef isinf
1275 #  define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1276 # endif
1277 #endif
1278
1279
1280 #if @GNULIB_ISNANF@
1281 /* Test for NaN for 'float' numbers.  */
1282 # if @HAVE_ISNANF@
1283 /* The original <math.h> included above provides a declaration of isnan macro
1284    or (older) isnanf function.  */
1285 #  if __GNUC__ >= 4
1286     /* GCC 4.0 and newer provides three built-ins for isnan.  */
1287 #   undef isnanf
1288 #   define isnanf(x) __builtin_isnanf ((float)(x))
1289 #  elif defined isnan
1290 #   undef isnanf
1291 #   define isnanf(x) isnan ((float)(x))
1292 #  endif
1293 # else
1294 /* Test whether X is a NaN.  */
1295 #  undef isnanf
1296 #  define isnanf rpl_isnanf
1297 _GL_EXTERN_C int isnanf (float x);
1298 # endif
1299 #endif
1300
1301 #if @GNULIB_ISNAND@
1302 /* Test for NaN for 'double' numbers.
1303    This function is a gnulib extension, unlike isnan() which applied only
1304    to 'double' numbers earlier but now is a type-generic macro.  */
1305 # if @HAVE_ISNAND@
1306 /* The original <math.h> included above provides a declaration of isnan
1307    macro.  */
1308 #  if __GNUC__ >= 4
1309     /* GCC 4.0 and newer provides three built-ins for isnan.  */
1310 #   undef isnand
1311 #   define isnand(x) __builtin_isnan ((double)(x))
1312 #  else
1313 #   undef isnand
1314 #   define isnand(x) isnan ((double)(x))
1315 #  endif
1316 # else
1317 /* Test whether X is a NaN.  */
1318 #  undef isnand
1319 #  define isnand rpl_isnand
1320 _GL_EXTERN_C int isnand (double x);
1321 # endif
1322 #endif
1323
1324 #if @GNULIB_ISNANL@
1325 /* Test for NaN for 'long double' numbers.  */
1326 # if @HAVE_ISNANL@
1327 /* The original <math.h> included above provides a declaration of isnan
1328    macro or (older) isnanl function.  */
1329 #  if __GNUC__ >= 4
1330     /* GCC 4.0 and newer provides three built-ins for isnan.  */
1331 #   undef isnanl
1332 #   define isnanl(x) __builtin_isnanl ((long double)(x))
1333 #  elif defined isnan
1334 #   undef isnanl
1335 #   define isnanl(x) isnan ((long double)(x))
1336 #  endif
1337 # else
1338 /* Test whether X is a NaN.  */
1339 #  undef isnanl
1340 #  define isnanl rpl_isnanl
1341 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1342 # endif
1343 #endif
1344
1345 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL!  */
1346 #if @GNULIB_ISNAN@
1347 # if @REPLACE_ISNAN@
1348 /* We can't just use the isnanf macro (e.g.) as exposed by
1349    isnanf.h (e.g.) here, because those may end up being macros
1350    that recursively expand back to isnan.  So use the gnulib
1351    replacements for them directly. */
1352 #  if @HAVE_ISNANF@ && __GNUC__ >= 4
1353 #   define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1354 #  else
1355 _GL_EXTERN_C int rpl_isnanf (float x);
1356 #   define gl_isnan_f(x) rpl_isnanf (x)
1357 #  endif
1358 #  if @HAVE_ISNAND@ && __GNUC__ >= 4
1359 #   define gl_isnan_d(x) __builtin_isnan ((double)(x))
1360 #  else
1361 _GL_EXTERN_C int rpl_isnand (double x);
1362 #   define gl_isnan_d(x) rpl_isnand (x)
1363 #  endif
1364 #  if @HAVE_ISNANL@ && __GNUC__ >= 4
1365 #   define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1366 #  else
1367 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1368 #   define gl_isnan_l(x) rpl_isnanl (x)
1369 #  endif
1370 #  undef isnan
1371 #  define isnan(x) \
1372    (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1373     sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1374     gl_isnan_f (x))
1375 # elif __GNUC__ >= 4
1376 #  undef isnan
1377 #  define isnan(x) \
1378    (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1379     sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1380     __builtin_isnanf ((float)(x)))
1381 # endif
1382 # ifdef __cplusplus
1383 #  ifdef isnan
1384 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1385 #   undef isnan
1386 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1387 #  endif
1388 # else
1389 /* Ensure isnan is a macro.  */
1390 #  ifndef isnan
1391 #   define isnan isnan
1392 #  endif
1393 # endif
1394 #elif defined GNULIB_POSIXCHECK
1395 # if defined isnan
1396 _GL_WARN_REAL_FLOATING_DECL (isnan);
1397 #  undef isnan
1398 #  define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1399 # endif
1400 #endif
1401
1402
1403 #if @GNULIB_SIGNBIT@
1404 # if @REPLACE_SIGNBIT_USING_GCC@
1405 #  undef signbit
1406    /* GCC 4.0 and newer provides three built-ins for signbit.  */
1407 #  define signbit(x) \
1408    (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1409     sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1410     __builtin_signbitf (x))
1411 # endif
1412 # if @REPLACE_SIGNBIT@
1413 #  undef signbit
1414 _GL_EXTERN_C int gl_signbitf (float arg);
1415 _GL_EXTERN_C int gl_signbitd (double arg);
1416 _GL_EXTERN_C int gl_signbitl (long double arg);
1417 #  if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1418 #   define _GL_NUM_UINT_WORDS(type) \
1419       ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1420 #   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1421 #    define gl_signbitf_OPTIMIZED_MACRO
1422 #    define gl_signbitf(arg) \
1423        ({ union { float _value;                                         \
1424                   unsigned int _word[_GL_NUM_UINT_WORDS (float)];       \
1425                 } _m;                                                   \
1426           _m._value = (arg);                                            \
1427           (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1;          \
1428         })
1429 #   endif
1430 #   if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1431 #    define gl_signbitd_OPTIMIZED_MACRO
1432 #    define gl_signbitd(arg) \
1433        ({ union { double _value;                                        \
1434                   unsigned int _word[_GL_NUM_UINT_WORDS (double)];      \
1435                 } _m;                                                   \
1436           _m._value = (arg);                                            \
1437           (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1;          \
1438         })
1439 #   endif
1440 #   if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1441 #    define gl_signbitl_OPTIMIZED_MACRO
1442 #    define gl_signbitl(arg) \
1443        ({ union { long double _value;                                   \
1444                   unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1445                 } _m;                                                   \
1446           _m._value = (arg);                                            \
1447           (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1;        \
1448         })
1449 #   endif
1450 #  endif
1451 #  define signbit(x) \
1452    (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1453     sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1454     gl_signbitf (x))
1455 # endif
1456 # ifdef __cplusplus
1457 #  ifdef signbit
1458 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1459 #   undef signbit
1460 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1461 #  endif
1462 # endif
1463 #elif defined GNULIB_POSIXCHECK
1464 # if defined signbit
1465 _GL_WARN_REAL_FLOATING_DECL (signbit);
1466 #  undef signbit
1467 #  define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1468 # endif
1469 #endif
1470
1471
1472 #endif /* _@GUARD_PREFIX@_MATH_H */
1473 #endif /* _@GUARD_PREFIX@_MATH_H */