1  /* Fix for conversion of float NAN to double.  Generic version.
       2     Copyright (C) 2022-2023 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