1  /* Get NaN payload.  flt-32 version.
       2     Copyright (C) 2016-2023 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  #include <fix-int-fp-convert-zero.h>
      20  #include <math.h>
      21  #include <math_private.h>
      22  #include <libm-alias-float.h>
      23  #include <stdint.h>
      24  
      25  float
      26  __getpayloadf (const float *x)
      27  {
      28    uint32_t ix;
      29    GET_FLOAT_WORD (ix, *x);
      30    if ((ix & 0x7f800000) != 0x7f800000
      31        || (ix & 0x7fffff) == 0)
      32      return -1;
      33    ix &= 0x3fffff;
      34    if (FIX_INT_FP_CONVERT_ZERO && ix == 0)
      35      return 0.0f;
      36    return (float) ix;
      37  }
      38  libm_alias_float (__getpayload, getpayload)