sysdeps/generic/fix-float-double-convert-nan.h

   1 /* Fix for conversion of float NAN to double.  Generic version.
   2    Copyright (C) 2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef FIX_FLOAT_DOUBLE_CONVERT_NAN_H
  20 #define FIX_FLOAT_DOUBLE_CONVERT_NAN_H
  21
  22 /* This function aims to work around conversions of float -NAN
  23    to double returning NAN instead of the correct -NAN in some
  24    architectures.  */
  25 static inline double __attribute__ ((always_inline))
  26 keep_sign_conversion (float flt)
  27 {
  28   return flt;
  29 }
  30
  31 #endif