kc3-lang/gnulib/lib/isnanf-nolibm.h

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• Hash : a3696e42
  Author :
  Date : 2020-08-09T12:09:17
  

  Use __builtin_isnan with clang.
  
  * lib/isnanf-nolibm.h (isnanf): Use the GCC built-in __builtin_isnan,
  not __builtin_isnanf. Also on clang.
  * m4/isnanf.m4 (gl_HAVE_ISNANF_NO_LIBM, gl_ISNANF_WORKS): Use the GCC
  built-in __builtin_isnan, not __builtin_isnanf. Also on clang.
  * lib/isnand-nolibm.h (isnand): With clang, use the GCC built-in.
  * m4/isnand.m4 (gl_HAVE_ISNAND_IN_LIBM): With clang, use the GCC
  built-in.
  * lib/isnanl-nolibm.h (isnanf): Use the GCC built-in __builtin_isnan,
  not __builtin_isnanl. Also on clang.
  * m4/isnanl.m4 (gl_HAVE_ISNANL_NO_LIBM, gl_FUNC_ISNANL_WORKS): Use the
  GCC built-in __builtin_isnan, not __builtin_isnanl. Also on clang.
  * lib/math.in.h (__has_builtin): Remove macro.
  (isnanf, gl_isnan_f): Use the GCC built-in __builtin_isnan, not
  __builtin_isnanf. Also on clang.
  (isnand, gl_isnan_d): With clang, use the GCC built-in.
  (isnanl, gl_isnan_l): Use the GCC built-in __builtin_isnan, not
  __builtin_isnanl. Also on clang.
  (isnan): Use the GCC built-in __builtin_isnan in all three cases. Also
  on clang.
  

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• lib/isnanf-nolibm.h

• /* Test for NaN that does not need libm.
     Copyright (C) 2007-2020 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #if HAVE_ISNANF_IN_LIBC
  /* Get declaration of isnan macro or (older) isnanf function.  */
  # include <math.h>
  # if (__GNUC__ >= 4) || (__clang_major__ >= 4)
     /* GCC >= 4.0 and clang provide a type-generic built-in for isnan.
        GCC >= 4.0 also provides __builtin_isnanf, but clang doesn't.  */
  #  undef isnanf
  #  define isnanf(x) __builtin_isnan ((float)(x))
  # elif defined isnan
  #  undef isnanf
  #  define isnanf(x) isnan ((float)(x))
  # else
     /* Get declaration of isnanf(), if not declared in <math.h>.  */
  #  if defined __sgi
     /* We can't include <ieeefp.h>, because it conflicts with our definition of
        isnand.  Therefore declare isnanf separately.  */
  extern int isnanf (float x);
  #  endif
  # endif
  #else
  /* Test whether X is a NaN.  */
  # undef isnanf
  # define isnanf rpl_isnanf
  extern int isnanf (float x);
  #endif
  

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