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_VALF
 145 # define HUGE_VALF (1.0f / 0.0f)
 146 # undef HUGE_VAL
 147 # define HUGE_VAL (1.0 / 0.0)
 148 # undef HUGE_VALL
 149 # define HUGE_VALL (1.0L / 0.0L)
 150 #endif
 151
 152 /* HUGE_VALF is a 'float' Infinity.  */
 153 #ifndef HUGE_VALF
 154 # if defined _MSC_VER
 155 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f.  */
 156 #  define HUGE_VALF (1e25f * 1e25f)
 157 # else
 158 #  define HUGE_VALF (1.0f / 0.0f)
 159 # endif
 160 #endif
 161
 162 /* HUGE_VAL is a 'double' Infinity.  */
 163 #ifndef HUGE_VAL
 164 # if defined _MSC_VER
 165 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0.  */
 166 #  define HUGE_VAL (1e250 * 1e250)
 167 # else
 168 #  define HUGE_VAL (1.0 / 0.0)
 169 # endif
 170 #endif
 171
 172 /* HUGE_VALL is a 'long double' Infinity.  */
 173 #ifndef HUGE_VALL
 174 # if defined _MSC_VER
 175 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L.  */
 176 #  define HUGE_VALL (1e250L * 1e250L)
 177 # else
 178 #  define HUGE_VALL (1.0L / 0.0L)
 179 # endif
 180 #endif
 181
 182
 183 /* Ensure FP_ILOGB0 and FP_ILOGBNAN are defined.  */
 184 #if !(defined FP_ILOGB0 && defined FP_ILOGBNAN)
 185 # if defined __NetBSD__ || defined __sgi
 186   /* NetBSD, IRIX 6.5: match what ilogb() does */
 187 #  define FP_ILOGB0   (- 2147483647 - 1) /* INT_MIN */
 188 #  define FP_ILOGBNAN (- 2147483647 - 1) /* INT_MIN */
 189 # elif defined _AIX
 190   /* AIX 5.1: match what ilogb() does in AIX >= 5.2 */
 191 #  define FP_ILOGB0   (- 2147483647 - 1) /* INT_MIN */
 192 #  define FP_ILOGBNAN 2147483647 /* INT_MAX */
 193 # elif defined __sun
 194   /* Solaris 9: match what ilogb() does */
 195 #  define FP_ILOGB0   (- 2147483647) /* - INT_MAX */
 196 #  define FP_ILOGBNAN 2147483647 /* INT_MAX */
 197 # else
 198   /* Gnulib defined values.  */
 199 #  define FP_ILOGB0   (- 2147483647) /* - INT_MAX */
 200 #  define FP_ILOGBNAN (- 2147483647 - 1) /* INT_MIN */
 201 # endif
 202 #endif
 203
 204
 205 #if @GNULIB_ACOSF@
 206 # if !@HAVE_ACOSF@
 207 #  undef acosf
 208 _GL_FUNCDECL_SYS (acosf, float, (float x));
 209 # endif
 210 _GL_CXXALIAS_SYS (acosf, float, (float x));
 211 _GL_CXXALIASWARN (acosf);
 212 #elif defined GNULIB_POSIXCHECK
 213 # undef acosf
 214 # if HAVE_RAW_DECL_ACOSF
 215 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
 216                  "use gnulib module acosf for portability");
 217 # endif
 218 #endif
 219
 220 #if @GNULIB_ACOSL@
 221 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
 222 #  undef acosl
 223 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
 224 # endif
 225 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
 226 _GL_CXXALIASWARN (acosl);
 227 #elif defined GNULIB_POSIXCHECK
 228 # undef acosl
 229 # if HAVE_RAW_DECL_ACOSL
 230 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
 231                  "use gnulib module acosl for portability");
 232 # endif
 233 #endif
 234
 235
 236 #if @GNULIB_ASINF@
 237 # if !@HAVE_ASINF@
 238 #  undef asinf
 239 _GL_FUNCDECL_SYS (asinf, float, (float x));
 240 # endif
 241 _GL_CXXALIAS_SYS (asinf, float, (float x));
 242 _GL_CXXALIASWARN (asinf);
 243 #elif defined GNULIB_POSIXCHECK
 244 # undef asinf
 245 # if HAVE_RAW_DECL_ASINF
 246 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
 247                  "use gnulib module asinf for portability");
 248 # endif
 249 #endif
 250
 251 #if @GNULIB_ASINL@
 252 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
 253 #  undef asinl
 254 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
 255 # endif
 256 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
 257 _GL_CXXALIASWARN (asinl);
 258 #elif defined GNULIB_POSIXCHECK
 259 # undef asinl
 260 # if HAVE_RAW_DECL_ASINL
 261 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
 262                  "use gnulib module asinl for portability");
 263 # endif
 264 #endif
 265
 266
 267 #if @GNULIB_ATANF@
 268 # if !@HAVE_ATANF@
 269 #  undef atanf
 270 _GL_FUNCDECL_SYS (atanf, float, (float x));
 271 # endif
 272 _GL_CXXALIAS_SYS (atanf, float, (float x));
 273 _GL_CXXALIASWARN (atanf);
 274 #elif defined GNULIB_POSIXCHECK
 275 # undef atanf
 276 # if HAVE_RAW_DECL_ATANF
 277 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
 278                  "use gnulib module atanf for portability");
 279 # endif
 280 #endif
 281
 282 #if @GNULIB_ATANL@
 283 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
 284 #  undef atanl
 285 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
 286 # endif
 287 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
 288 _GL_CXXALIASWARN (atanl);
 289 #elif defined GNULIB_POSIXCHECK
 290 # undef atanl
 291 # if HAVE_RAW_DECL_ATANL
 292 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
 293                  "use gnulib module atanl for portability");
 294 # endif
 295 #endif
 296
 297
 298 #if @GNULIB_ATAN2F@
 299 # if !@HAVE_ATAN2F@
 300 #  undef atan2f
 301 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
 302 # endif
 303 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
 304 _GL_CXXALIASWARN (atan2f);
 305 #elif defined GNULIB_POSIXCHECK
 306 # undef atan2f
 307 # if HAVE_RAW_DECL_ATAN2F
 308 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
 309                  "use gnulib module atan2f for portability");
 310 # endif
 311 #endif
 312
 313
 314 #if @GNULIB_CBRTF@
 315 # if @REPLACE_CBRTF@
 316 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 317 #   undef cbrtf
 318 #   define cbrtf rpl_cbrtf
 319 #  endif
 320 _GL_FUNCDECL_RPL (cbrtf, float, (float x));
 321 _GL_CXXALIAS_RPL (cbrtf, float, (float x));
 322 # else
 323 #  if !@HAVE_DECL_CBRTF@
 324 _GL_FUNCDECL_SYS (cbrtf, float, (float x));
 325 #  endif
 326 _GL_CXXALIAS_SYS (cbrtf, float, (float x));
 327 # endif
 328 _GL_CXXALIASWARN (cbrtf);
 329 #elif defined GNULIB_POSIXCHECK
 330 # undef cbrtf
 331 # if HAVE_RAW_DECL_CBRTF
 332 _GL_WARN_ON_USE (cbrtf, "cbrtf is unportable - "
 333                  "use gnulib module cbrtf for portability");
 334 # endif
 335 #endif
 336
 337 #if @GNULIB_CBRT@
 338 # if !@HAVE_CBRT@
 339 _GL_FUNCDECL_SYS (cbrt, double, (double x));
 340 # endif
 341 _GL_CXXALIAS_SYS (cbrt, double, (double x));
 342 _GL_CXXALIASWARN (cbrt);
 343 #elif defined GNULIB_POSIXCHECK
 344 # undef cbrt
 345 # if HAVE_RAW_DECL_CBRT
 346 _GL_WARN_ON_USE (cbrt, "cbrt is unportable - "
 347                  "use gnulib module cbrt for portability");
 348 # endif
 349 #endif
 350
 351 #if @GNULIB_CBRTL@
 352 # if @REPLACE_CBRTL@
 353 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 354 #   undef cbrtl
 355 #   define cbrtl rpl_cbrtl
 356 #  endif
 357 _GL_FUNCDECL_RPL (cbrtl, long double, (long double x));
 358 _GL_CXXALIAS_RPL (cbrtl, long double, (long double x));
 359 # else
 360 #  if !@HAVE_DECL_CBRTL@
 361 _GL_FUNCDECL_SYS (cbrtl, long double, (long double x));
 362 #  endif
 363 _GL_CXXALIAS_SYS (cbrtl, long double, (long double x));
 364 # endif
 365 _GL_CXXALIASWARN (cbrtl);
 366 #elif defined GNULIB_POSIXCHECK
 367 # undef cbrtl
 368 # if HAVE_RAW_DECL_CBRTL
 369 _GL_WARN_ON_USE (cbrtl, "cbrtl is unportable - "
 370                  "use gnulib module cbrtl for portability");
 371 # endif
 372 #endif
 373
 374
 375 #if @GNULIB_CEILF@
 376 # if @REPLACE_CEILF@
 377 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 378 #   undef ceilf
 379 #   define ceilf rpl_ceilf
 380 #  endif
 381 _GL_FUNCDECL_RPL (ceilf, float, (float x));
 382 _GL_CXXALIAS_RPL (ceilf, float, (float x));
 383 # else
 384 #  if !@HAVE_DECL_CEILF@
 385 #   undef ceilf
 386 _GL_FUNCDECL_SYS (ceilf, float, (float x));
 387 #  endif
 388 _GL_CXXALIAS_SYS (ceilf, float, (float x));
 389 # endif
 390 _GL_CXXALIASWARN (ceilf);
 391 #elif defined GNULIB_POSIXCHECK
 392 # undef ceilf
 393 # if HAVE_RAW_DECL_CEILF
 394 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
 395                  "use gnulib module ceilf for portability");
 396 # endif
 397 #endif
 398
 399 #if @GNULIB_CEIL@
 400 # if @REPLACE_CEIL@
 401 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 402 #   define ceil rpl_ceil
 403 #  endif
 404 _GL_FUNCDECL_RPL (ceil, double, (double x));
 405 _GL_CXXALIAS_RPL (ceil, double, (double x));
 406 # else
 407 _GL_CXXALIAS_SYS (ceil, double, (double x));
 408 # endif
 409 _GL_CXXALIASWARN (ceil);
 410 #endif
 411
 412 #if @GNULIB_CEILL@
 413 # if @REPLACE_CEILL@
 414 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 415 #   undef ceill
 416 #   define ceill rpl_ceill
 417 #  endif
 418 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
 419 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
 420 # else
 421 #  if !@HAVE_DECL_CEILL@
 422 #   undef ceill
 423 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
 424 #  endif
 425 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
 426 # endif
 427 _GL_CXXALIASWARN (ceill);
 428 #elif defined GNULIB_POSIXCHECK
 429 # undef ceill
 430 # if HAVE_RAW_DECL_CEILL
 431 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
 432                  "use gnulib module ceill for portability");
 433 # endif
 434 #endif
 435
 436
 437 #if @GNULIB_COPYSIGNF@
 438 # if !@HAVE_DECL_COPYSIGNF@
 439 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
 440 # endif
 441 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
 442 _GL_CXXALIASWARN (copysignf);
 443 #elif defined GNULIB_POSIXCHECK
 444 # undef copysignf
 445 # if HAVE_RAW_DECL_COPYSIGNF
 446 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
 447                  "use gnulib module copysignf for portability");
 448 # endif
 449 #endif
 450
 451 #if @GNULIB_COPYSIGN@
 452 # if !@HAVE_COPYSIGN@
 453 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
 454 # endif
 455 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
 456 _GL_CXXALIASWARN (copysign);
 457 #elif defined GNULIB_POSIXCHECK
 458 # undef copysign
 459 # if HAVE_RAW_DECL_COPYSIGN
 460 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
 461                  "use gnulib module copysign for portability");
 462 # endif
 463 #endif
 464
 465 #if @GNULIB_COPYSIGNL@
 466 # if !@HAVE_COPYSIGNL@
 467 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
 468 # endif
 469 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
 470 _GL_CXXALIASWARN (copysignl);
 471 #elif defined GNULIB_POSIXCHECK
 472 # undef copysignl
 473 # if HAVE_RAW_DECL_COPYSIGNL
 474 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
 475                  "use gnulib module copysignl for portability");
 476 # endif
 477 #endif
 478
 479
 480 #if @GNULIB_COSF@
 481 # if !@HAVE_COSF@
 482 #  undef cosf
 483 _GL_FUNCDECL_SYS (cosf, float, (float x));
 484 # endif
 485 _GL_CXXALIAS_SYS (cosf, float, (float x));
 486 _GL_CXXALIASWARN (cosf);
 487 #elif defined GNULIB_POSIXCHECK
 488 # undef cosf
 489 # if HAVE_RAW_DECL_COSF
 490 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
 491                  "use gnulib module cosf for portability");
 492 # endif
 493 #endif
 494
 495 #if @GNULIB_COSL@
 496 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
 497 #  undef cosl
 498 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
 499 # endif
 500 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
 501 _GL_CXXALIASWARN (cosl);
 502 #elif defined GNULIB_POSIXCHECK
 503 # undef cosl
 504 # if HAVE_RAW_DECL_COSL
 505 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
 506                  "use gnulib module cosl for portability");
 507 # endif
 508 #endif
 509
 510
 511 #if @GNULIB_COSHF@
 512 # if !@HAVE_COSHF@
 513 #  undef coshf
 514 _GL_FUNCDECL_SYS (coshf, float, (float x));
 515 # endif
 516 _GL_CXXALIAS_SYS (coshf, float, (float x));
 517 _GL_CXXALIASWARN (coshf);
 518 #elif defined GNULIB_POSIXCHECK
 519 # undef coshf
 520 # if HAVE_RAW_DECL_COSHF
 521 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
 522                  "use gnulib module coshf for portability");
 523 # endif
 524 #endif
 525
 526
 527 #if @GNULIB_EXPF@
 528 # if !@HAVE_EXPF@
 529 #  undef expf
 530 _GL_FUNCDECL_SYS (expf, float, (float x));
 531 # endif
 532 _GL_CXXALIAS_SYS (expf, float, (float x));
 533 _GL_CXXALIASWARN (expf);
 534 #elif defined GNULIB_POSIXCHECK
 535 # undef expf
 536 # if HAVE_RAW_DECL_EXPF
 537 _GL_WARN_ON_USE (expf, "expf is unportable - "
 538                  "use gnulib module expf for portability");
 539 # endif
 540 #endif
 541
 542 #if @GNULIB_EXPL@
 543 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
 544 #  undef expl
 545 _GL_FUNCDECL_SYS (expl, long double, (long double x));
 546 # endif
 547 _GL_CXXALIAS_SYS (expl, long double, (long double x));
 548 _GL_CXXALIASWARN (expl);
 549 #elif defined GNULIB_POSIXCHECK
 550 # undef expl
 551 # if HAVE_RAW_DECL_EXPL
 552 _GL_WARN_ON_USE (expl, "expl is unportable - "
 553                  "use gnulib module expl for portability");
 554 # endif
 555 #endif
 556
 557
 558 #if @GNULIB_EXP2F@
 559 # if !@HAVE_DECL_EXP2F@
 560 _GL_FUNCDECL_SYS (exp2f, float, (float x));
 561 # endif
 562 _GL_CXXALIAS_SYS (exp2f, float, (float x));
 563 _GL_CXXALIASWARN (exp2f);
 564 #elif defined GNULIB_POSIXCHECK
 565 # undef exp2f
 566 # if HAVE_RAW_DECL_EXP2F
 567 _GL_WARN_ON_USE (exp2f, "exp2f is unportable - "
 568                  "use gnulib module exp2f for portability");
 569 # endif
 570 #endif
 571
 572 #if @GNULIB_EXP2@
 573 # if @REPLACE_EXP2@
 574 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 575 #   undef exp2
 576 #   define exp2 rpl_exp2
 577 #  endif
 578 _GL_FUNCDECL_RPL (exp2, double, (double x));
 579 _GL_CXXALIAS_RPL (exp2, double, (double x));
 580 # else
 581 #  if !@HAVE_DECL_EXP2@
 582 _GL_FUNCDECL_SYS (exp2, double, (double x));
 583 #  endif
 584 _GL_CXXALIAS_SYS (exp2, double, (double x));
 585 # endif
 586 _GL_CXXALIASWARN (exp2);
 587 #elif defined GNULIB_POSIXCHECK
 588 # undef exp2
 589 # if HAVE_RAW_DECL_EXP2
 590 _GL_WARN_ON_USE (exp2, "exp2 is unportable - "
 591                  "use gnulib module exp2 for portability");
 592 # endif
 593 #endif
 594
 595 #if @GNULIB_EXP2L@
 596 # if @REPLACE_EXP2L@
 597 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 598 #   undef exp2l
 599 #   define exp2l rpl_exp2l
 600 #  endif
 601 _GL_FUNCDECL_RPL (exp2l, long double, (long double x));
 602 _GL_CXXALIAS_RPL (exp2l, long double, (long double x));
 603 # else
 604 #  if !@HAVE_DECL_EXP2L@
 605 #   undef exp2l
 606 _GL_FUNCDECL_SYS (exp2l, long double, (long double x));
 607 #  endif
 608 _GL_CXXALIAS_SYS (exp2l, long double, (long double x));
 609 # endif
 610 _GL_CXXALIASWARN (exp2l);
 611 #elif defined GNULIB_POSIXCHECK
 612 # undef exp2l
 613 # if HAVE_RAW_DECL_EXP2L
 614 _GL_WARN_ON_USE (exp2l, "exp2l is unportable - "
 615                  "use gnulib module exp2l for portability");
 616 # endif
 617 #endif
 618
 619
 620 #if @GNULIB_EXPM1F@
 621 # if @REPLACE_EXPM1F@
 622 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 623 #   undef expm1f
 624 #   define expm1f rpl_expm1f
 625 #  endif
 626 _GL_FUNCDECL_RPL (expm1f, float, (float x));
 627 _GL_CXXALIAS_RPL (expm1f, float, (float x));
 628 # else
 629 #  if !@HAVE_EXPM1F@
 630 _GL_FUNCDECL_SYS (expm1f, float, (float x));
 631 #  endif
 632 _GL_CXXALIAS_SYS (expm1f, float, (float x));
 633 # endif
 634 _GL_CXXALIASWARN (expm1f);
 635 #elif defined GNULIB_POSIXCHECK
 636 # undef expm1f
 637 # if HAVE_RAW_DECL_EXPM1F
 638 _GL_WARN_ON_USE (expm1f, "expm1f is unportable - "
 639                  "use gnulib module expm1f for portability");
 640 # endif
 641 #endif
 642
 643 #if @GNULIB_EXPM1@
 644 # if @REPLACE_EXPM1@
 645 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 646 #   undef expm1
 647 #   define expm1 rpl_expm1
 648 #  endif
 649 _GL_FUNCDECL_RPL (expm1, double, (double x));
 650 _GL_CXXALIAS_RPL (expm1, double, (double x));
 651 # else
 652 #  if !@HAVE_EXPM1@
 653 _GL_FUNCDECL_SYS (expm1, double, (double x));
 654 #  endif
 655 _GL_CXXALIAS_SYS (expm1, double, (double x));
 656 # endif
 657 _GL_CXXALIASWARN (expm1);
 658 #elif defined GNULIB_POSIXCHECK
 659 # undef expm1
 660 # if HAVE_RAW_DECL_EXPM1
 661 _GL_WARN_ON_USE (expm1, "expm1 is unportable - "
 662                  "use gnulib module expm1 for portability");
 663 # endif
 664 #endif
 665
 666 #if @GNULIB_EXPM1L@
 667 # if !@HAVE_DECL_EXPM1L@
 668 #  undef expm1l
 669 _GL_FUNCDECL_SYS (expm1l, long double, (long double x));
 670 # endif
 671 _GL_CXXALIAS_SYS (expm1l, long double, (long double x));
 672 _GL_CXXALIASWARN (expm1l);
 673 #elif defined GNULIB_POSIXCHECK
 674 # undef expm1l
 675 # if HAVE_RAW_DECL_EXPM1L
 676 _GL_WARN_ON_USE (expm1l, "expm1l is unportable - "
 677                  "use gnulib module expm1l for portability");
 678 # endif
 679 #endif
 680
 681
 682 #if @GNULIB_FABSF@
 683 # if !@HAVE_FABSF@
 684 #  undef fabsf
 685 _GL_FUNCDECL_SYS (fabsf, float, (float x));
 686 # endif
 687 _GL_CXXALIAS_SYS (fabsf, float, (float x));
 688 _GL_CXXALIASWARN (fabsf);
 689 #elif defined GNULIB_POSIXCHECK
 690 # undef fabsf
 691 # if HAVE_RAW_DECL_FABSF
 692 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
 693                  "use gnulib module fabsf for portability");
 694 # endif
 695 #endif
 696
 697 #if @GNULIB_FABSL@
 698 # if @REPLACE_FABSL@
 699 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 700 #   undef fabsl
 701 #   define fabsl rpl_fabsl
 702 #  endif
 703 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
 704 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
 705 # else
 706 #  if !@HAVE_FABSL@
 707 #   undef fabsl
 708 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
 709 #  endif
 710 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
 711 # endif
 712 _GL_CXXALIASWARN (fabsl);
 713 #elif defined GNULIB_POSIXCHECK
 714 # undef fabsl
 715 # if HAVE_RAW_DECL_FABSL
 716 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
 717                  "use gnulib module fabsl for portability");
 718 # endif
 719 #endif
 720
 721
 722 #if @GNULIB_FLOORF@
 723 # if @REPLACE_FLOORF@
 724 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 725 #   undef floorf
 726 #   define floorf rpl_floorf
 727 #  endif
 728 _GL_FUNCDECL_RPL (floorf, float, (float x));
 729 _GL_CXXALIAS_RPL (floorf, float, (float x));
 730 # else
 731 #  if !@HAVE_DECL_FLOORF@
 732 #   undef floorf
 733 _GL_FUNCDECL_SYS (floorf, float, (float x));
 734 #  endif
 735 _GL_CXXALIAS_SYS (floorf, float, (float x));
 736 # endif
 737 _GL_CXXALIASWARN (floorf);
 738 #elif defined GNULIB_POSIXCHECK
 739 # undef floorf
 740 # if HAVE_RAW_DECL_FLOORF
 741 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
 742                  "use gnulib module floorf for portability");
 743 # endif
 744 #endif
 745
 746 #if @GNULIB_FLOOR@
 747 # if @REPLACE_FLOOR@
 748 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 749 #   define floor rpl_floor
 750 #  endif
 751 _GL_FUNCDECL_RPL (floor, double, (double x));
 752 _GL_CXXALIAS_RPL (floor, double, (double x));
 753 # else
 754 _GL_CXXALIAS_SYS (floor, double, (double x));
 755 # endif
 756 _GL_CXXALIASWARN (floor);
 757 #endif
 758
 759 #if @GNULIB_FLOORL@
 760 # if @REPLACE_FLOORL@
 761 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 762 #   undef floorl
 763 #   define floorl rpl_floorl
 764 #  endif
 765 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
 766 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
 767 # else
 768 #  if !@HAVE_DECL_FLOORL@
 769 #   undef floorl
 770 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
 771 #  endif
 772 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
 773 # endif
 774 _GL_CXXALIASWARN (floorl);
 775 #elif defined GNULIB_POSIXCHECK
 776 # undef floorl
 777 # if HAVE_RAW_DECL_FLOORL
 778 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
 779                  "use gnulib module floorl for portability");
 780 # endif
 781 #endif
 782
 783
 784 #if @GNULIB_FMAF@
 785 # if @REPLACE_FMAF@
 786 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 787 #   undef fmaf
 788 #   define fmaf rpl_fmaf
 789 #  endif
 790 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
 791 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
 792 # else
 793 #  if !@HAVE_FMAF@
 794 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
 795 #  endif
 796 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
 797 # endif
 798 _GL_CXXALIASWARN (fmaf);
 799 #elif defined GNULIB_POSIXCHECK
 800 # undef fmaf
 801 # if HAVE_RAW_DECL_FMAF
 802 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
 803                  "use gnulib module fmaf for portability");
 804 # endif
 805 #endif
 806
 807 #if @GNULIB_FMA@
 808 # if @REPLACE_FMA@
 809 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 810 #   undef fma
 811 #   define fma rpl_fma
 812 #  endif
 813 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
 814 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
 815 # else
 816 #  if !@HAVE_FMA@
 817 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
 818 #  endif
 819 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
 820 # endif
 821 _GL_CXXALIASWARN (fma);
 822 #elif defined GNULIB_POSIXCHECK
 823 # undef fma
 824 # if HAVE_RAW_DECL_FMA
 825 _GL_WARN_ON_USE (fma, "fma is unportable - "
 826                  "use gnulib module fma for portability");
 827 # endif
 828 #endif
 829
 830 #if @GNULIB_FMAL@
 831 # if @REPLACE_FMAL@
 832 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 833 #   undef fmal
 834 #   define fmal rpl_fmal
 835 #  endif
 836 _GL_FUNCDECL_RPL (fmal, long double,
 837                   (long double x, long double y, long double z));
 838 _GL_CXXALIAS_RPL (fmal, long double,
 839                   (long double x, long double y, long double z));
 840 # else
 841 #  if !@HAVE_FMAL@
 842 #   undef fmal
 843 _GL_FUNCDECL_SYS (fmal, long double,
 844                   (long double x, long double y, long double z));
 845 #  endif
 846 _GL_CXXALIAS_SYS (fmal, long double,
 847                   (long double x, long double y, long double z));
 848 # endif
 849 _GL_CXXALIASWARN (fmal);
 850 #elif defined GNULIB_POSIXCHECK
 851 # undef fmal
 852 # if HAVE_RAW_DECL_FMAL
 853 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
 854                  "use gnulib module fmal for portability");
 855 # endif
 856 #endif
 857
 858
 859 #if @GNULIB_FMODF@
 860 # if @REPLACE_FMODF@
 861 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 862 #   undef fmodf
 863 #   define fmodf rpl_fmodf
 864 #  endif
 865 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
 866 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
 867 # else
 868 #  if !@HAVE_FMODF@
 869 #   undef fmodf
 870 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
 871 #  endif
 872 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
 873 # endif
 874 _GL_CXXALIASWARN (fmodf);
 875 #elif defined GNULIB_POSIXCHECK
 876 # undef fmodf
 877 # if HAVE_RAW_DECL_FMODF
 878 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
 879                  "use gnulib module fmodf for portability");
 880 # endif
 881 #endif
 882
 883 #if @GNULIB_FMOD@
 884 # if @REPLACE_FMOD@
 885 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 886 #   undef fmod
 887 #   define fmod rpl_fmod
 888 #  endif
 889 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
 890 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
 891 # else
 892 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
 893 # endif
 894 _GL_CXXALIASWARN (fmod);
 895 #elif defined GNULIB_POSIXCHECK
 896 # undef fmod
 897 # if HAVE_RAW_DECL_FMOD
 898 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
 899                  "use gnulib module fmod for portability");
 900 # endif
 901 #endif
 902
 903 #if @GNULIB_FMODL@
 904 # if @REPLACE_FMODL@
 905 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 906 #   undef fmodl
 907 #   define fmodl rpl_fmodl
 908 #  endif
 909 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
 910 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
 911 # else
 912 #  if !@HAVE_FMODL@
 913 #   undef fmodl
 914 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
 915 #  endif
 916 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
 917 # endif
 918 _GL_CXXALIASWARN (fmodl);
 919 #elif defined GNULIB_POSIXCHECK
 920 # undef fmodl
 921 # if HAVE_RAW_DECL_FMODL
 922 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
 923                  "use gnulib module fmodl for portability");
 924 # endif
 925 #endif
 926
 927
 928 /* Write x as
 929      x = mantissa * 2^exp
 930    where
 931      If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
 932      If x is zero: mantissa = x, exp = 0.
 933      If x is infinite or NaN: mantissa = x, exp unspecified.
 934    Store exp in *EXPPTR and return mantissa.  */
 935 #if @GNULIB_FREXPF@
 936 # if @REPLACE_FREXPF@
 937 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 938 #   undef frexpf
 939 #   define frexpf rpl_frexpf
 940 #  endif
 941 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
 942 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
 943 # else
 944 #  if !@HAVE_FREXPF@
 945 #   undef frexpf
 946 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
 947 #  endif
 948 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
 949 # endif
 950 _GL_CXXALIASWARN (frexpf);
 951 #elif defined GNULIB_POSIXCHECK
 952 # undef frexpf
 953 # if HAVE_RAW_DECL_FREXPF
 954 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
 955                  "use gnulib module frexpf for portability");
 956 # endif
 957 #endif
 958
 959 /* Write x as
 960      x = mantissa * 2^exp
 961    where
 962      If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
 963      If x is zero: mantissa = x, exp = 0.
 964      If x is infinite or NaN: mantissa = x, exp unspecified.
 965    Store exp in *EXPPTR and return mantissa.  */
 966 #if @GNULIB_FREXP@
 967 # if @REPLACE_FREXP@
 968 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 969 #   define frexp rpl_frexp
 970 #  endif
 971 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
 972 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
 973 # else
 974 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
 975 # endif
 976 _GL_CXXALIASWARN (frexp);
 977 #elif defined GNULIB_POSIXCHECK
 978 # undef frexp
 979 /* Assume frexp is always declared.  */
 980 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
 981                  "use gnulib module frexp for portability");
 982 #endif
 983
 984 /* Write x as
 985      x = mantissa * 2^exp
 986    where
 987      If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
 988      If x is zero: mantissa = x, exp = 0.
 989      If x is infinite or NaN: mantissa = x, exp unspecified.
 990    Store exp in *EXPPTR and return mantissa.  */
 991 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
 992 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 993 #  undef frexpl
 994 #  define frexpl rpl_frexpl
 995 # endif
 996 _GL_FUNCDECL_RPL (frexpl, long double,
 997                   (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
 998 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
 999 #else
1000 # if !@HAVE_DECL_FREXPL@
1001 _GL_FUNCDECL_SYS (frexpl, long double,
1002                   (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
1003 # endif
1004 # if @GNULIB_FREXPL@
1005 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
1006 # endif
1007 #endif
1008 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
1009 _GL_CXXALIASWARN (frexpl);
1010 #endif
1011 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
1012 # undef frexpl
1013 # if HAVE_RAW_DECL_FREXPL
1014 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
1015                  "use gnulib module frexpl for portability");
1016 # endif
1017 #endif
1018
1019
1020 /* Return sqrt(x^2+y^2).  */
1021 #if @GNULIB_HYPOTF@
1022 # if @REPLACE_HYPOTF@
1023 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1024 #   undef hypotf
1025 #   define hypotf rpl_hypotf
1026 #  endif
1027 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
1028 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
1029 # else
1030 #  if !@HAVE_HYPOTF@
1031 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
1032 #  endif
1033 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
1034 # endif
1035 _GL_CXXALIASWARN (hypotf);
1036 #elif defined GNULIB_POSIXCHECK
1037 # undef hypotf
1038 # if HAVE_RAW_DECL_HYPOTF
1039 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
1040                  "use gnulib module hypotf for portability");
1041 # endif
1042 #endif
1043
1044 /* Return sqrt(x^2+y^2).  */
1045 #if @GNULIB_HYPOT@
1046 # if @REPLACE_HYPOT@
1047 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1048 #   undef hypot
1049 #   define hypot rpl_hypot
1050 #  endif
1051 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
1052 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
1053 # else
1054 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
1055 # endif
1056 _GL_CXXALIASWARN (hypot);
1057 #elif defined GNULIB_POSIXCHECK
1058 # undef hypot
1059 # if HAVE_RAW_DECL_HYPOT
1060 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
1061                  "use gnulib module hypot for portability");
1062 # endif
1063 #endif
1064
1065 /* Return sqrt(x^2+y^2).  */
1066 #if @GNULIB_HYPOTL@
1067 # if @REPLACE_HYPOTL@
1068 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1069 #   undef hypotl
1070 #   define hypotl rpl_hypotl
1071 #  endif
1072 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
1073 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
1074 # else
1075 #  if !@HAVE_HYPOTL@
1076 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
1077 #  endif
1078 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
1079 # endif
1080 _GL_CXXALIASWARN (hypotl);
1081 #elif defined GNULIB_POSIXCHECK
1082 # undef hypotl
1083 # if HAVE_RAW_DECL_HYPOTL
1084 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
1085                  "use gnulib module hypotl for portability");
1086 # endif
1087 #endif
1088
1089
1090 #if @GNULIB_ILOGBF@
1091 # if @REPLACE_ILOGBF@
1092 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1093 #   undef ilogbf
1094 #   define ilogbf rpl_ilogbf
1095 #  endif
1096 _GL_FUNCDECL_RPL (ilogbf, int, (float x));
1097 _GL_CXXALIAS_RPL (ilogbf, int, (float x));
1098 # else
1099 #  if !@HAVE_ILOGBF@
1100 _GL_FUNCDECL_SYS (ilogbf, int, (float x));
1101 #  endif
1102 _GL_CXXALIAS_SYS (ilogbf, int, (float x));
1103 # endif
1104 _GL_CXXALIASWARN (ilogbf);
1105 #elif defined GNULIB_POSIXCHECK
1106 # undef ilogbf
1107 # if HAVE_RAW_DECL_ILOGBF
1108 _GL_WARN_ON_USE (ilogbf, "ilogbf is unportable - "
1109                  "use gnulib module ilogbf for portability");
1110 # endif
1111 #endif
1112
1113 #if @GNULIB_ILOGB@
1114 # if @REPLACE_ILOGB@
1115 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1116 #   undef ilogb
1117 #   define ilogb rpl_ilogb
1118 #  endif
1119 _GL_FUNCDECL_RPL (ilogb, int, (double x));
1120 _GL_CXXALIAS_RPL (ilogb, int, (double x));
1121 # else
1122 #  if !@HAVE_ILOGB@
1123 _GL_FUNCDECL_SYS (ilogb, int, (double x));
1124 #  endif
1125 _GL_CXXALIAS_SYS (ilogb, int, (double x));
1126 # endif
1127 _GL_CXXALIASWARN (ilogb);
1128 #elif defined GNULIB_POSIXCHECK
1129 # undef ilogb
1130 # if HAVE_RAW_DECL_ILOGB
1131 _GL_WARN_ON_USE (ilogb, "ilogb is unportable - "
1132                  "use gnulib module ilogb for portability");
1133 # endif
1134 #endif
1135
1136 #if @GNULIB_ILOGBL@
1137 # if !@HAVE_ILOGBL@
1138 _GL_FUNCDECL_SYS (ilogbl, int, (long double x));
1139 # endif
1140 _GL_CXXALIAS_SYS (ilogbl, int, (long double x));
1141 _GL_CXXALIASWARN (ilogbl);
1142 #elif defined GNULIB_POSIXCHECK
1143 # undef ilogbl
1144 # if HAVE_RAW_DECL_ILOGBL
1145 _GL_WARN_ON_USE (ilogbl, "ilogbl is unportable - "
1146                  "use gnulib module ilogbl for portability");
1147 # endif
1148 #endif
1149
1150
1151 /* Return x * 2^exp.  */
1152 #if @GNULIB_LDEXPF@
1153 # if !@HAVE_LDEXPF@
1154 #  undef ldexpf
1155 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
1156 # endif
1157 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
1158 _GL_CXXALIASWARN (ldexpf);
1159 #elif defined GNULIB_POSIXCHECK
1160 # undef ldexpf
1161 # if HAVE_RAW_DECL_LDEXPF
1162 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
1163                  "use gnulib module ldexpf for portability");
1164 # endif
1165 #endif
1166
1167 /* Return x * 2^exp.  */
1168 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
1169 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1170 #  undef ldexpl
1171 #  define ldexpl rpl_ldexpl
1172 # endif
1173 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
1174 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
1175 #else
1176 # if !@HAVE_DECL_LDEXPL@
1177 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
1178 # endif
1179 # if @GNULIB_LDEXPL@
1180 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
1181 # endif
1182 #endif
1183 #if @GNULIB_LDEXPL@
1184 _GL_CXXALIASWARN (ldexpl);
1185 #endif
1186 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
1187 # undef ldexpl
1188 # if HAVE_RAW_DECL_LDEXPL
1189 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
1190                  "use gnulib module ldexpl for portability");
1191 # endif
1192 #endif
1193
1194
1195 #if @GNULIB_LOGF@
1196 # if @REPLACE_LOGF@
1197 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1198 #   undef logf
1199 #   define logf rpl_logf
1200 #  endif
1201 _GL_FUNCDECL_RPL (logf, float, (float x));
1202 _GL_CXXALIAS_RPL (logf, float, (float x));
1203 # else
1204 #  if !@HAVE_LOGF@
1205 #   undef logf
1206 _GL_FUNCDECL_SYS (logf, float, (float x));
1207 #  endif
1208 _GL_CXXALIAS_SYS (logf, float, (float x));
1209 # endif
1210 _GL_CXXALIASWARN (logf);
1211 #elif defined GNULIB_POSIXCHECK
1212 # undef logf
1213 # if HAVE_RAW_DECL_LOGF
1214 _GL_WARN_ON_USE (logf, "logf is unportable - "
1215                  "use gnulib module logf for portability");
1216 # endif
1217 #endif
1218
1219 #if @GNULIB_LOG@
1220 # if @REPLACE_LOG@
1221 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1222 #   undef log
1223 #   define log rpl_log
1224 #  endif
1225 _GL_FUNCDECL_RPL (log, double, (double x));
1226 _GL_CXXALIAS_RPL (log, double, (double x));
1227 # else
1228 _GL_CXXALIAS_SYS (log, double, (double x));
1229 # endif
1230 _GL_CXXALIASWARN (log);
1231 #elif defined GNULIB_POSIXCHECK
1232 # undef log
1233 # if HAVE_RAW_DECL_LOG
1234 _GL_WARN_ON_USE (log, "log has portability problems - "
1235                  "use gnulib module log for portability");
1236 # endif
1237 #endif
1238
1239 #if @GNULIB_LOGL@
1240 # if @REPLACE_LOGL@
1241 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1242 #   undef logl
1243 #   define logl rpl_logl
1244 #  endif
1245 _GL_FUNCDECL_RPL (logl, long double, (long double x));
1246 _GL_CXXALIAS_RPL (logl, long double, (long double x));
1247 # else
1248 #  if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1249 #   undef logl
1250 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1251 #  endif
1252 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1253 # endif
1254 _GL_CXXALIASWARN (logl);
1255 #elif defined GNULIB_POSIXCHECK
1256 # undef logl
1257 # if HAVE_RAW_DECL_LOGL
1258 _GL_WARN_ON_USE (logl, "logl is unportable - "
1259                  "use gnulib module logl for portability");
1260 # endif
1261 #endif
1262
1263
1264 #if @GNULIB_LOG10F@
1265 # if @REPLACE_LOG10F@
1266 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1267 #   undef log10f
1268 #   define log10f rpl_log10f
1269 #  endif
1270 _GL_FUNCDECL_RPL (log10f, float, (float x));
1271 _GL_CXXALIAS_RPL (log10f, float, (float x));
1272 # else
1273 #  if !@HAVE_LOG10F@
1274 #   undef log10f
1275 _GL_FUNCDECL_SYS (log10f, float, (float x));
1276 #  endif
1277 _GL_CXXALIAS_SYS (log10f, float, (float x));
1278 # endif
1279 _GL_CXXALIASWARN (log10f);
1280 #elif defined GNULIB_POSIXCHECK
1281 # undef log10f
1282 # if HAVE_RAW_DECL_LOG10F
1283 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1284                  "use gnulib module log10f for portability");
1285 # endif
1286 #endif
1287
1288 #if @GNULIB_LOG10@
1289 # if @REPLACE_LOG10@
1290 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1291 #   undef log10
1292 #   define log10 rpl_log10
1293 #  endif
1294 _GL_FUNCDECL_RPL (log10, double, (double x));
1295 _GL_CXXALIAS_RPL (log10, double, (double x));
1296 # else
1297 _GL_CXXALIAS_SYS (log10, double, (double x));
1298 # endif
1299 _GL_CXXALIASWARN (log10);
1300 #elif defined GNULIB_POSIXCHECK
1301 # undef log10
1302 # if HAVE_RAW_DECL_LOG10
1303 _GL_WARN_ON_USE (log10, "log10 has portability problems - "
1304                  "use gnulib module log10 for portability");
1305 # endif
1306 #endif
1307
1308 #if @GNULIB_LOG10L@
1309 # if @REPLACE_LOG10L@
1310 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1311 #   undef log10l
1312 #   define log10l rpl_log10l
1313 #  endif
1314 _GL_FUNCDECL_RPL (log10l, long double, (long double x));
1315 _GL_CXXALIAS_RPL (log10l, long double, (long double x));
1316 # else
1317 #  if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1318 #   undef log10l
1319 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1320 #  endif
1321 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1322 # endif
1323 _GL_CXXALIASWARN (log10l);
1324 #elif defined GNULIB_POSIXCHECK
1325 # undef log10l
1326 # if HAVE_RAW_DECL_LOG10L
1327 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1328                  "use gnulib module log10l for portability");
1329 # endif
1330 #endif
1331
1332
1333 #if @GNULIB_LOG1PF@
1334 # if @REPLACE_LOG1PF@
1335 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1336 #   undef log1pf
1337 #   define log1pf rpl_log1pf
1338 #  endif
1339 _GL_FUNCDECL_RPL (log1pf, float, (float x));
1340 _GL_CXXALIAS_RPL (log1pf, float, (float x));
1341 # else
1342 #  if !@HAVE_LOG1PF@
1343 _GL_FUNCDECL_SYS (log1pf, float, (float x));
1344 #  endif
1345 _GL_CXXALIAS_SYS (log1pf, float, (float x));
1346 # endif
1347 _GL_CXXALIASWARN (log1pf);
1348 #elif defined GNULIB_POSIXCHECK
1349 # undef log1pf
1350 # if HAVE_RAW_DECL_LOG1PF
1351 _GL_WARN_ON_USE (log1pf, "log1pf is unportable - "
1352                  "use gnulib module log1pf for portability");
1353 # endif
1354 #endif
1355
1356 #if @GNULIB_LOG1P@
1357 # if @REPLACE_LOG1P@
1358 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1359 #   undef log1p
1360 #   define log1p rpl_log1p
1361 #  endif
1362 _GL_FUNCDECL_RPL (log1p, double, (double x));
1363 _GL_CXXALIAS_RPL (log1p, double, (double x));
1364 # else
1365 #  if !@HAVE_LOG1P@
1366 _GL_FUNCDECL_SYS (log1p, double, (double x));
1367 #  endif
1368 _GL_CXXALIAS_SYS (log1p, double, (double x));
1369 # endif
1370 _GL_CXXALIASWARN (log1p);
1371 #elif defined GNULIB_POSIXCHECK
1372 # undef log1p
1373 # if HAVE_RAW_DECL_LOG1P
1374 _GL_WARN_ON_USE (log1p, "log1p has portability problems - "
1375                  "use gnulib module log1p for portability");
1376 # endif
1377 #endif
1378
1379 #if @GNULIB_LOG1PL@
1380 # if @REPLACE_LOG1PL@
1381 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1382 #   undef log1pl
1383 #   define log1pl rpl_log1pl
1384 #  endif
1385 _GL_FUNCDECL_RPL (log1pl, long double, (long double x));
1386 _GL_CXXALIAS_RPL (log1pl, long double, (long double x));
1387 # else
1388 #  if !@HAVE_LOG1PL@
1389 _GL_FUNCDECL_SYS (log1pl, long double, (long double x));
1390 #  endif
1391 _GL_CXXALIAS_SYS (log1pl, long double, (long double x));
1392 # endif
1393 _GL_CXXALIASWARN (log1pl);
1394 #elif defined GNULIB_POSIXCHECK
1395 # undef log1pl
1396 # if HAVE_RAW_DECL_LOG1PL
1397 _GL_WARN_ON_USE (log1pl, "log1pl has portability problems - "
1398                  "use gnulib module log1pl for portability");
1399 # endif
1400 #endif
1401
1402
1403 #if @GNULIB_LOG2F@
1404 # if @REPLACE_LOG2F@
1405 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1406 #   undef log2f
1407 #   define log2f rpl_log2f
1408 #  endif
1409 _GL_FUNCDECL_RPL (log2f, float, (float x));
1410 _GL_CXXALIAS_RPL (log2f, float, (float x));
1411 # else
1412 #  if !@HAVE_DECL_LOG2F@
1413 #   undef log2f
1414 _GL_FUNCDECL_SYS (log2f, float, (float x));
1415 #  endif
1416 _GL_CXXALIAS_SYS (log2f, float, (float x));
1417 # endif
1418 _GL_CXXALIASWARN (log2f);
1419 #elif defined GNULIB_POSIXCHECK
1420 # undef log2f
1421 # if HAVE_RAW_DECL_LOG2F
1422 _GL_WARN_ON_USE (log2f, "log2f is unportable - "
1423                  "use gnulib module log2f for portability");
1424 # endif
1425 #endif
1426
1427 #if @GNULIB_LOG2@
1428 # if @REPLACE_LOG2@
1429 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1430 #   undef log2
1431 #   define log2 rpl_log2
1432 #  endif
1433 _GL_FUNCDECL_RPL (log2, double, (double x));
1434 _GL_CXXALIAS_RPL (log2, double, (double x));
1435 # else
1436 #  if !@HAVE_DECL_LOG2@
1437 #   undef log2
1438 _GL_FUNCDECL_SYS (log2, double, (double x));
1439 #  endif
1440 _GL_CXXALIAS_SYS (log2, double, (double x));
1441 # endif
1442 _GL_CXXALIASWARN (log2);
1443 #elif defined GNULIB_POSIXCHECK
1444 # undef log2
1445 # if HAVE_RAW_DECL_LOG2
1446 _GL_WARN_ON_USE (log2, "log2 is unportable - "
1447                  "use gnulib module log2 for portability");
1448 # endif
1449 #endif
1450
1451 #if @GNULIB_LOG2L@
1452 # if @REPLACE_LOG2L@
1453 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1454 #   undef log2l
1455 #   define log2l rpl_log2l
1456 #  endif
1457 _GL_FUNCDECL_RPL (log2l, long double, (long double x));
1458 _GL_CXXALIAS_RPL (log2l, long double, (long double x));
1459 # else
1460 #  if !@HAVE_DECL_LOG2L@
1461 _GL_FUNCDECL_SYS (log2l, long double, (long double x));
1462 #  endif
1463 _GL_CXXALIAS_SYS (log2l, long double, (long double x));
1464 # endif
1465 _GL_CXXALIASWARN (log2l);
1466 #elif defined GNULIB_POSIXCHECK
1467 # undef log2l
1468 # if HAVE_RAW_DECL_LOG2L
1469 _GL_WARN_ON_USE (log2l, "log2l is unportable - "
1470                  "use gnulib module log2l for portability");
1471 # endif
1472 #endif
1473
1474
1475 #if @GNULIB_LOGBF@
1476 # if @REPLACE_LOGBF@
1477 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1478 #   undef logbf
1479 #   define logbf rpl_logbf
1480 #  endif
1481 _GL_FUNCDECL_RPL (logbf, float, (float x));
1482 _GL_CXXALIAS_RPL (logbf, float, (float x));
1483 # else
1484 #  if !@HAVE_LOGBF@
1485 _GL_FUNCDECL_SYS (logbf, float, (float x));
1486 #  endif
1487 _GL_CXXALIAS_SYS (logbf, float, (float x));
1488 # endif
1489 _GL_CXXALIASWARN (logbf);
1490 #elif defined GNULIB_POSIXCHECK
1491 # undef logbf
1492 # if HAVE_RAW_DECL_LOGBF
1493 _GL_WARN_ON_USE (logbf, "logbf is unportable - "
1494                  "use gnulib module logbf for portability");
1495 # endif
1496 #endif
1497
1498 #if @GNULIB_LOGB@
1499 # if @REPLACE_LOGB@
1500 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1501 #   undef logb
1502 #   define logb rpl_logb
1503 #  endif
1504 _GL_FUNCDECL_RPL (logb, double, (double x));
1505 _GL_CXXALIAS_RPL (logb, double, (double x));
1506 # else
1507 #  if !@HAVE_DECL_LOGB@
1508 _GL_FUNCDECL_SYS (logb, double, (double x));
1509 #  endif
1510 _GL_CXXALIAS_SYS (logb, double, (double x));
1511 # endif
1512 _GL_CXXALIASWARN (logb);
1513 #elif defined GNULIB_POSIXCHECK
1514 # undef logb
1515 # if HAVE_RAW_DECL_LOGB
1516 _GL_WARN_ON_USE (logb, "logb is unportable - "
1517                  "use gnulib module logb for portability");
1518 # endif
1519 #endif
1520
1521 #if @GNULIB_LOGBL@
1522 # if @REPLACE_LOGBL@
1523 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1524 #   undef logbl
1525 #   define logbl rpl_logbl
1526 #  endif
1527 _GL_FUNCDECL_RPL (logbl, long double, (long double x));
1528 _GL_CXXALIAS_RPL (logbl, long double, (long double x));
1529 # else
1530 #  if !@HAVE_LOGBL@
1531 _GL_FUNCDECL_SYS (logbl, long double, (long double x));
1532 #  endif
1533 _GL_CXXALIAS_SYS (logbl, long double, (long double x));
1534 # endif
1535 _GL_CXXALIASWARN (logbl);
1536 #elif defined GNULIB_POSIXCHECK
1537 # undef logbl
1538 # if HAVE_RAW_DECL_LOGBL
1539 _GL_WARN_ON_USE (logbl, "logbl is unportable - "
1540                  "use gnulib module logbl for portability");
1541 # endif
1542 #endif
1543
1544
1545 #if @GNULIB_MODFF@
1546 # if @REPLACE_MODFF@
1547 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1548 #   undef modff
1549 #   define modff rpl_modff
1550 #  endif
1551 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1552 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1553 # else
1554 #  if !@HAVE_MODFF@
1555 #   undef modff
1556 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1557 #  endif
1558 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1559 # endif
1560 _GL_CXXALIASWARN (modff);
1561 #elif defined GNULIB_POSIXCHECK
1562 # undef modff
1563 # if HAVE_RAW_DECL_MODFF
1564 _GL_WARN_ON_USE (modff, "modff is unportable - "
1565                  "use gnulib module modff for portability");
1566 # endif
1567 #endif
1568
1569 #if @GNULIB_MODF@
1570 # if @REPLACE_MODF@
1571 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1572 #   undef modf
1573 #   define modf rpl_modf
1574 #  endif
1575 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1576 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1577 # else
1578 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1579 # endif
1580 _GL_CXXALIASWARN (modf);
1581 #elif defined GNULIB_POSIXCHECK
1582 # undef modf
1583 # if HAVE_RAW_DECL_MODF
1584 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1585                  "use gnulib module modf for portability");
1586 # endif
1587 #endif
1588
1589 #if @GNULIB_MODFL@
1590 # if @REPLACE_MODFL@
1591 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1592 #   undef modfl
1593 #   define modfl rpl_modfl
1594 #  endif
1595 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1596                                       _GL_ARG_NONNULL ((2)));
1597 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1598 # else
1599 #  if !@HAVE_MODFL@
1600 #   undef modfl
1601 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1602                                       _GL_ARG_NONNULL ((2)));
1603 #  endif
1604 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1605 # endif
1606 _GL_CXXALIASWARN (modfl);
1607 #elif defined GNULIB_POSIXCHECK
1608 # undef modfl
1609 # if HAVE_RAW_DECL_MODFL
1610 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1611                  "use gnulib module modfl for portability");
1612 # endif
1613 #endif
1614
1615
1616 #if @GNULIB_POWF@
1617 # if !@HAVE_POWF@
1618 #  undef powf
1619 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1620 # endif
1621 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1622 _GL_CXXALIASWARN (powf);
1623 #elif defined GNULIB_POSIXCHECK
1624 # undef powf
1625 # if HAVE_RAW_DECL_POWF
1626 _GL_WARN_ON_USE (powf, "powf is unportable - "
1627                  "use gnulib module powf for portability");
1628 # endif
1629 #endif
1630
1631
1632 #if @GNULIB_REMAINDERF@
1633 # if @REPLACE_REMAINDERF@
1634 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1635 #   undef remainderf
1636 #   define remainderf rpl_remainderf
1637 #  endif
1638 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1639 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1640 # else
1641 #  if !@HAVE_REMAINDERF@
1642 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1643 #  endif
1644 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1645 # endif
1646 _GL_CXXALIASWARN (remainderf);
1647 #elif defined GNULIB_POSIXCHECK
1648 # undef remainderf
1649 # if HAVE_RAW_DECL_REMAINDERF
1650 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1651                  "use gnulib module remainderf for portability");
1652 # endif
1653 #endif
1654
1655 #if @GNULIB_REMAINDER@
1656 # if @REPLACE_REMAINDER@
1657 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1658 #   undef remainder
1659 #   define remainder rpl_remainder
1660 #  endif
1661 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1662 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1663 # else
1664 #  if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1665 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1666 #  endif
1667 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1668 # endif
1669 _GL_CXXALIASWARN (remainder);
1670 #elif defined GNULIB_POSIXCHECK
1671 # undef remainder
1672 # if HAVE_RAW_DECL_REMAINDER
1673 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1674                  "use gnulib module remainder for portability");
1675 # endif
1676 #endif
1677
1678 #if @GNULIB_REMAINDERL@
1679 # if @REPLACE_REMAINDERL@
1680 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1681 #   undef remainderl
1682 #   define remainderl rpl_remainderl
1683 #  endif
1684 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1685 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1686 # else
1687 #  if !@HAVE_DECL_REMAINDERL@
1688 #   undef remainderl
1689 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1690 #  endif
1691 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1692 # endif
1693 _GL_CXXALIASWARN (remainderl);
1694 #elif defined GNULIB_POSIXCHECK
1695 # undef remainderl
1696 # if HAVE_RAW_DECL_REMAINDERL
1697 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1698                  "use gnulib module remainderl for portability");
1699 # endif
1700 #endif
1701
1702
1703 #if @GNULIB_RINTF@
1704 # if !@HAVE_DECL_RINTF@
1705 _GL_FUNCDECL_SYS (rintf, float, (float x));
1706 # endif
1707 _GL_CXXALIAS_SYS (rintf, float, (float x));
1708 _GL_CXXALIASWARN (rintf);
1709 #elif defined GNULIB_POSIXCHECK
1710 # undef rintf
1711 # if HAVE_RAW_DECL_RINTF
1712 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1713                  "use gnulib module rintf for portability");
1714 # endif
1715 #endif
1716
1717 #if @GNULIB_RINT@
1718 # if !@HAVE_RINT@
1719 _GL_FUNCDECL_SYS (rint, double, (double x));
1720 # endif
1721 _GL_CXXALIAS_SYS (rint, double, (double x));
1722 _GL_CXXALIASWARN (rint);
1723 #elif defined GNULIB_POSIXCHECK
1724 # undef rint
1725 # if HAVE_RAW_DECL_RINT
1726 _GL_WARN_ON_USE (rint, "rint is unportable - "
1727                  "use gnulib module rint for portability");
1728 # endif
1729 #endif
1730
1731 #if @GNULIB_RINTL@
1732 # if !@HAVE_RINTL@
1733 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1734 # endif
1735 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1736 _GL_CXXALIASWARN (rintl);
1737 #elif defined GNULIB_POSIXCHECK
1738 # undef rintl
1739 # if HAVE_RAW_DECL_RINTL
1740 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1741                  "use gnulib module rintl for portability");
1742 # endif
1743 #endif
1744
1745
1746 #if @GNULIB_ROUNDF@
1747 # if @REPLACE_ROUNDF@
1748 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1749 #   undef roundf
1750 #   define roundf rpl_roundf
1751 #  endif
1752 _GL_FUNCDECL_RPL (roundf, float, (float x));
1753 _GL_CXXALIAS_RPL (roundf, float, (float x));
1754 # else
1755 #  if !@HAVE_DECL_ROUNDF@
1756 _GL_FUNCDECL_SYS (roundf, float, (float x));
1757 #  endif
1758 _GL_CXXALIAS_SYS (roundf, float, (float x));
1759 # endif
1760 _GL_CXXALIASWARN (roundf);
1761 #elif defined GNULIB_POSIXCHECK
1762 # undef roundf
1763 # if HAVE_RAW_DECL_ROUNDF
1764 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1765                  "use gnulib module roundf for portability");
1766 # endif
1767 #endif
1768
1769 #if @GNULIB_ROUND@
1770 # if @REPLACE_ROUND@
1771 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1772 #   undef round
1773 #   define round rpl_round
1774 #  endif
1775 _GL_FUNCDECL_RPL (round, double, (double x));
1776 _GL_CXXALIAS_RPL (round, double, (double x));
1777 # else
1778 #  if !@HAVE_DECL_ROUND@
1779 _GL_FUNCDECL_SYS (round, double, (double x));
1780 #  endif
1781 _GL_CXXALIAS_SYS (round, double, (double x));
1782 # endif
1783 _GL_CXXALIASWARN (round);
1784 #elif defined GNULIB_POSIXCHECK
1785 # undef round
1786 # if HAVE_RAW_DECL_ROUND
1787 _GL_WARN_ON_USE (round, "round is unportable - "
1788                  "use gnulib module round for portability");
1789 # endif
1790 #endif
1791
1792 #if @GNULIB_ROUNDL@
1793 # if @REPLACE_ROUNDL@
1794 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1795 #   undef roundl
1796 #   define roundl rpl_roundl
1797 #  endif
1798 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1799 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1800 # else
1801 #  if !@HAVE_DECL_ROUNDL@
1802 #   undef roundl
1803 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1804 #  endif
1805 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1806 # endif
1807 _GL_CXXALIASWARN (roundl);
1808 #elif defined GNULIB_POSIXCHECK
1809 # undef roundl
1810 # if HAVE_RAW_DECL_ROUNDL
1811 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1812                  "use gnulib module roundl for portability");
1813 # endif
1814 #endif
1815
1816
1817 #if @GNULIB_SINF@
1818 # if !@HAVE_SINF@
1819 #  undef sinf
1820 _GL_FUNCDECL_SYS (sinf, float, (float x));
1821 # endif
1822 _GL_CXXALIAS_SYS (sinf, float, (float x));
1823 _GL_CXXALIASWARN (sinf);
1824 #elif defined GNULIB_POSIXCHECK
1825 # undef sinf
1826 # if HAVE_RAW_DECL_SINF
1827 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1828                  "use gnulib module sinf for portability");
1829 # endif
1830 #endif
1831
1832 #if @GNULIB_SINL@
1833 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1834 #  undef sinl
1835 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1836 # endif
1837 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1838 _GL_CXXALIASWARN (sinl);
1839 #elif defined GNULIB_POSIXCHECK
1840 # undef sinl
1841 # if HAVE_RAW_DECL_SINL
1842 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1843                  "use gnulib module sinl for portability");
1844 # endif
1845 #endif
1846
1847
1848 #if @GNULIB_SINHF@
1849 # if !@HAVE_SINHF@
1850 #  undef sinhf
1851 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1852 # endif
1853 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1854 _GL_CXXALIASWARN (sinhf);
1855 #elif defined GNULIB_POSIXCHECK
1856 # undef sinhf
1857 # if HAVE_RAW_DECL_SINHF
1858 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1859                  "use gnulib module sinhf for portability");
1860 # endif
1861 #endif
1862
1863
1864 #if @GNULIB_SQRTF@
1865 # if !@HAVE_SQRTF@
1866 #  undef sqrtf
1867 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1868 # endif
1869 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1870 _GL_CXXALIASWARN (sqrtf);
1871 #elif defined GNULIB_POSIXCHECK
1872 # undef sqrtf
1873 # if HAVE_RAW_DECL_SQRTF
1874 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1875                  "use gnulib module sqrtf for portability");
1876 # endif
1877 #endif
1878
1879 #if @GNULIB_SQRTL@
1880 # if @REPLACE_SQRTL@
1881 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1882 #   undef sqrtl
1883 #   define sqrtl rpl_sqrtl
1884 #  endif
1885 _GL_FUNCDECL_RPL (sqrtl, long double, (long double x));
1886 _GL_CXXALIAS_RPL (sqrtl, long double, (long double x));
1887 # else
1888 #  if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1889 #   undef sqrtl
1890 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1891 #  endif
1892 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1893 # endif
1894 _GL_CXXALIASWARN (sqrtl);
1895 #elif defined GNULIB_POSIXCHECK
1896 # undef sqrtl
1897 # if HAVE_RAW_DECL_SQRTL
1898 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1899                  "use gnulib module sqrtl for portability");
1900 # endif
1901 #endif
1902
1903
1904 #if @GNULIB_TANF@
1905 # if !@HAVE_TANF@
1906 #  undef tanf
1907 _GL_FUNCDECL_SYS (tanf, float, (float x));
1908 # endif
1909 _GL_CXXALIAS_SYS (tanf, float, (float x));
1910 _GL_CXXALIASWARN (tanf);
1911 #elif defined GNULIB_POSIXCHECK
1912 # undef tanf
1913 # if HAVE_RAW_DECL_TANF
1914 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1915                  "use gnulib module tanf for portability");
1916 # endif
1917 #endif
1918
1919 #if @GNULIB_TANL@
1920 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1921 #  undef tanl
1922 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1923 # endif
1924 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1925 _GL_CXXALIASWARN (tanl);
1926 #elif defined GNULIB_POSIXCHECK
1927 # undef tanl
1928 # if HAVE_RAW_DECL_TANL
1929 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1930                  "use gnulib module tanl for portability");
1931 # endif
1932 #endif
1933
1934
1935 #if @GNULIB_TANHF@
1936 # if !@HAVE_TANHF@
1937 #  undef tanhf
1938 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1939 # endif
1940 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1941 _GL_CXXALIASWARN (tanhf);
1942 #elif defined GNULIB_POSIXCHECK
1943 # undef tanhf
1944 # if HAVE_RAW_DECL_TANHF
1945 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1946                  "use gnulib module tanhf for portability");
1947 # endif
1948 #endif
1949
1950
1951 #if @GNULIB_TRUNCF@
1952 # if @REPLACE_TRUNCF@
1953 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1954 #   define truncf rpl_truncf
1955 #  endif
1956 _GL_FUNCDECL_RPL (truncf, float, (float x));
1957 _GL_CXXALIAS_RPL (truncf, float, (float x));
1958 # else
1959 #  if !@HAVE_DECL_TRUNCF@
1960 _GL_FUNCDECL_SYS (truncf, float, (float x));
1961 #  endif
1962 _GL_CXXALIAS_SYS (truncf, float, (float x));
1963 # endif
1964 _GL_CXXALIASWARN (truncf);
1965 #elif defined GNULIB_POSIXCHECK
1966 # undef truncf
1967 # if HAVE_RAW_DECL_TRUNCF
1968 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1969                  "use gnulib module truncf for portability");
1970 # endif
1971 #endif
1972
1973 #if @GNULIB_TRUNC@
1974 # if @REPLACE_TRUNC@
1975 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1976 #   define trunc rpl_trunc
1977 #  endif
1978 _GL_FUNCDECL_RPL (trunc, double, (double x));
1979 _GL_CXXALIAS_RPL (trunc, double, (double x));
1980 # else
1981 #  if !@HAVE_DECL_TRUNC@
1982 _GL_FUNCDECL_SYS (trunc, double, (double x));
1983 #  endif
1984 _GL_CXXALIAS_SYS (trunc, double, (double x));
1985 # endif
1986 _GL_CXXALIASWARN (trunc);
1987 #elif defined GNULIB_POSIXCHECK
1988 # undef trunc
1989 # if HAVE_RAW_DECL_TRUNC
1990 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1991                  "use gnulib module trunc for portability");
1992 # endif
1993 #endif
1994
1995 #if @GNULIB_TRUNCL@
1996 # if @REPLACE_TRUNCL@
1997 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1998 #   undef truncl
1999 #   define truncl rpl_truncl
2000 #  endif
2001 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
2002 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
2003 # else
2004 #  if !@HAVE_DECL_TRUNCL@
2005 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
2006 #  endif
2007 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
2008 # endif
2009 _GL_CXXALIASWARN (truncl);
2010 #elif defined GNULIB_POSIXCHECK
2011 # undef truncl
2012 # if HAVE_RAW_DECL_TRUNCL
2013 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
2014                  "use gnulib module truncl for portability");
2015 # endif
2016 #endif
2017
2018
2019 /* Definitions of function-like macros come here, after the function
2020    declarations.  */
2021
2022
2023 #if @GNULIB_ISFINITE@
2024 # if @REPLACE_ISFINITE@
2025 _GL_EXTERN_C int gl_isfinitef (float x);
2026 _GL_EXTERN_C int gl_isfinited (double x);
2027 _GL_EXTERN_C int gl_isfinitel (long double x);
2028 #  undef isfinite
2029 #  define isfinite(x) \
2030    (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
2031     sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
2032     gl_isfinitef (x))
2033 # endif
2034 # ifdef __cplusplus
2035 #  ifdef isfinite
2036 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
2037 #   undef isfinite
2038 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
2039 #  endif
2040 # endif
2041 #elif defined GNULIB_POSIXCHECK
2042 # if defined isfinite
2043 _GL_WARN_REAL_FLOATING_DECL (isfinite);
2044 #  undef isfinite
2045 #  define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
2046 # endif
2047 #endif
2048
2049
2050 #if @GNULIB_ISINF@
2051 # if @REPLACE_ISINF@
2052 _GL_EXTERN_C int gl_isinff (float x);
2053 _GL_EXTERN_C int gl_isinfd (double x);
2054 _GL_EXTERN_C int gl_isinfl (long double x);
2055 #  undef isinf
2056 #  define isinf(x) \
2057    (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
2058     sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
2059     gl_isinff (x))
2060 # endif
2061 # ifdef __cplusplus
2062 #  ifdef isinf
2063 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
2064 #   undef isinf
2065 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
2066 #  endif
2067 # endif
2068 #elif defined GNULIB_POSIXCHECK
2069 # if defined isinf
2070 _GL_WARN_REAL_FLOATING_DECL (isinf);
2071 #  undef isinf
2072 #  define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
2073 # endif
2074 #endif
2075
2076
2077 #if @GNULIB_ISNANF@
2078 /* Test for NaN for 'float' numbers.  */
2079 # if @HAVE_ISNANF@
2080 /* The original <math.h> included above provides a declaration of isnan macro
2081    or (older) isnanf function.  */
2082 #  if __GNUC__ >= 4
2083     /* GCC 4.0 and newer provides three built-ins for isnan.  */
2084 #   undef isnanf
2085 #   define isnanf(x) __builtin_isnanf ((float)(x))
2086 #  elif defined isnan
2087 #   undef isnanf
2088 #   define isnanf(x) isnan ((float)(x))
2089 #  endif
2090 # else
2091 /* Test whether X is a NaN.  */
2092 #  undef isnanf
2093 #  define isnanf rpl_isnanf
2094 _GL_EXTERN_C int isnanf (float x);
2095 # endif
2096 #endif
2097
2098 #if @GNULIB_ISNAND@
2099 /* Test for NaN for 'double' numbers.
2100    This function is a gnulib extension, unlike isnan() which applied only
2101    to 'double' numbers earlier but now is a type-generic macro.  */
2102 # if @HAVE_ISNAND@
2103 /* The original <math.h> included above provides a declaration of isnan
2104    macro.  */
2105 #  if __GNUC__ >= 4
2106     /* GCC 4.0 and newer provides three built-ins for isnan.  */
2107 #   undef isnand
2108 #   define isnand(x) __builtin_isnan ((double)(x))
2109 #  else
2110 #   undef isnand
2111 #   define isnand(x) isnan ((double)(x))
2112 #  endif
2113 # else
2114 /* Test whether X is a NaN.  */
2115 #  undef isnand
2116 #  define isnand rpl_isnand
2117 _GL_EXTERN_C int isnand (double x);
2118 # endif
2119 #endif
2120
2121 #if @GNULIB_ISNANL@
2122 /* Test for NaN for 'long double' numbers.  */
2123 # if @HAVE_ISNANL@
2124 /* The original <math.h> included above provides a declaration of isnan
2125    macro or (older) isnanl function.  */
2126 #  if __GNUC__ >= 4
2127     /* GCC 4.0 and newer provides three built-ins for isnan.  */
2128 #   undef isnanl
2129 #   define isnanl(x) __builtin_isnanl ((long double)(x))
2130 #  elif defined isnan
2131 #   undef isnanl
2132 #   define isnanl(x) isnan ((long double)(x))
2133 #  endif
2134 # else
2135 /* Test whether X is a NaN.  */
2136 #  undef isnanl
2137 #  define isnanl rpl_isnanl
2138 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
2139 # endif
2140 #endif
2141
2142 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL!  */
2143 #if @GNULIB_ISNAN@
2144 # if @REPLACE_ISNAN@
2145 /* We can't just use the isnanf macro (e.g.) as exposed by
2146    isnanf.h (e.g.) here, because those may end up being macros
2147    that recursively expand back to isnan.  So use the gnulib
2148    replacements for them directly. */
2149 #  if @HAVE_ISNANF@ && __GNUC__ >= 4
2150 #   define gl_isnan_f(x) __builtin_isnanf ((float)(x))
2151 #  else
2152 _GL_EXTERN_C int rpl_isnanf (float x);
2153 #   define gl_isnan_f(x) rpl_isnanf (x)
2154 #  endif
2155 #  if @HAVE_ISNAND@ && __GNUC__ >= 4
2156 #   define gl_isnan_d(x) __builtin_isnan ((double)(x))
2157 #  else
2158 _GL_EXTERN_C int rpl_isnand (double x);
2159 #   define gl_isnan_d(x) rpl_isnand (x)
2160 #  endif
2161 #  if @HAVE_ISNANL@ && __GNUC__ >= 4
2162 #   define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
2163 #  else
2164 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
2165 #   define gl_isnan_l(x) rpl_isnanl (x)
2166 #  endif
2167 #  undef isnan
2168 #  define isnan(x) \
2169    (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
2170     sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
2171     gl_isnan_f (x))
2172 # elif __GNUC__ >= 4
2173 #  undef isnan
2174 #  define isnan(x) \
2175    (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
2176     sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
2177     __builtin_isnanf ((float)(x)))
2178 # endif
2179 # ifdef __cplusplus
2180 #  ifdef isnan
2181 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
2182 #   undef isnan
2183 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
2184 #  endif
2185 # else
2186 /* Ensure isnan is a macro.  */
2187 #  ifndef isnan
2188 #   define isnan isnan
2189 #  endif
2190 # endif
2191 #elif defined GNULIB_POSIXCHECK
2192 # if defined isnan
2193 _GL_WARN_REAL_FLOATING_DECL (isnan);
2194 #  undef isnan
2195 #  define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
2196 # endif
2197 #endif
2198
2199
2200 #if @GNULIB_SIGNBIT@
2201 # if @REPLACE_SIGNBIT_USING_GCC@
2202 #  undef signbit
2203    /* GCC 4.0 and newer provides three built-ins for signbit.  */
2204 #  define signbit(x) \
2205    (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
2206     sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
2207     __builtin_signbitf (x))
2208 # endif
2209 # if @REPLACE_SIGNBIT@
2210 #  undef signbit
2211 _GL_EXTERN_C int gl_signbitf (float arg);
2212 _GL_EXTERN_C int gl_signbitd (double arg);
2213 _GL_EXTERN_C int gl_signbitl (long double arg);
2214 #  if __GNUC__ >= 2 && !defined __STRICT_ANSI__
2215 #   define _GL_NUM_UINT_WORDS(type) \
2216       ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
2217 #   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
2218 #    define gl_signbitf_OPTIMIZED_MACRO
2219 #    define gl_signbitf(arg) \
2220        ({ union { float _value;                                         \
2221                   unsigned int _word[_GL_NUM_UINT_WORDS (float)];       \
2222                 } _m;                                                   \
2223           _m._value = (arg);                                            \
2224           (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1;          \
2225         })
2226 #   endif
2227 #   if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
2228 #    define gl_signbitd_OPTIMIZED_MACRO
2229 #    define gl_signbitd(arg) \
2230        ({ union { double _value;                                        \
2231                   unsigned int _word[_GL_NUM_UINT_WORDS (double)];      \
2232                 } _m;                                                   \
2233           _m._value = (arg);                                            \
2234           (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1;          \
2235         })
2236 #   endif
2237 #   if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
2238 #    define gl_signbitl_OPTIMIZED_MACRO
2239 #    define gl_signbitl(arg) \
2240        ({ union { long double _value;                                   \
2241                   unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
2242                 } _m;                                                   \
2243           _m._value = (arg);                                            \
2244           (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1;        \
2245         })
2246 #   endif
2247 #  endif
2248 #  define signbit(x) \
2249    (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
2250     sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
2251     gl_signbitf (x))
2252 # endif
2253 # ifdef __cplusplus
2254 #  ifdef signbit
2255 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
2256 #   undef signbit
2257 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
2258 #  endif
2259 # endif
2260 #elif defined GNULIB_POSIXCHECK
2261 # if defined signbit
2262 _GL_WARN_REAL_FLOATING_DECL (signbit);
2263 #  undef signbit
2264 #  define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
2265 # endif
2266 #endif
2267
2268
2269 #endif /* _@GUARD_PREFIX@_MATH_H */
2270 #endif /* _@GUARD_PREFIX@_MATH_H */