1  /* Total order operation on absolute values.  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 <math.h>
      20  #include <math_private.h>
      21  #include <libm-alias-float.h>
      22  #include <nan-high-order-bit.h>
      23  #include <stdint.h>
      24  #include <shlib-compat.h>
      25  #include <first-versions.h>
      26  
      27  int
      28  __totalordermagf (const float *x, const float *y)
      29  {
      30    uint32_t ix, iy;
      31    GET_FLOAT_WORD (ix, *x);
      32    GET_FLOAT_WORD (iy, *y);
      33    ix &= 0x7fffffff;
      34    iy &= 0x7fffffff;
      35  #if HIGH_ORDER_BIT_IS_SET_FOR_SNAN
      36    /* For the preferred quiet NaN convention, this operation is a
      37       comparison of the representations of the absolute values of the
      38       arguments.  If both arguments are NaNs, invert the
      39       quiet/signaling bit so comparing that way works.  */
      40    if (ix > 0x7f800000 && iy > 0x7f800000)
      41      {
      42        ix ^= 0x00400000;
      43        iy ^= 0x00400000;
      44      }
      45  #endif
      46    return ix <= iy;
      47  }
      48  #ifdef SHARED
      49  # define CONCATX(x, y) x ## y
      50  # define CONCAT(x, y) CONCATX (x, y)
      51  # define UNIQUE_ALIAS(name) CONCAT (name, __COUNTER__)
      52  # define do_symbol(orig_name, name, aliasname)		\
      53    strong_alias (orig_name, name)			\
      54    versioned_symbol (libm, name, aliasname, GLIBC_2_31)
      55  # undef weak_alias
      56  # define weak_alias(name, aliasname)			\
      57    do_symbol (name, UNIQUE_ALIAS (name), aliasname);
      58  #endif
      59  libm_alias_float (__totalordermag, totalordermag)
      60  #if SHLIB_COMPAT (libm, GLIBC_2_25, GLIBC_2_31)
      61  int
      62  attribute_compat_text_section
      63  __totalordermag_compatf (float x, float y)
      64  {
      65    return __totalordermagf (&x, &y);
      66  }
      67  #undef do_symbol
      68  #define do_symbol(orig_name, name, aliasname)			\
      69    strong_alias (orig_name, name)				\
      70    compat_symbol (libm, name, aliasname,				\
      71  		 CONCAT (FIRST_VERSION_libm_, aliasname))
      72  libm_alias_float (__totalordermag_compat, totalordermag)
      73  #endif