sysdeps/x86/fpu/math_private.h

   1 /* Private inline math functions for x86.
   2    Copyright (C) 1995-2021 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 X86_MATH_PRIVATE_H
  20 #define X86_MATH_PRIVATE_H 1
  21
  22 #include_next <math_private.h>
  23
  24 __extern_always_inline long double
  25 __NTH (__ieee754_atan2l (long double y, long double x))
  26 {
  27   long double ret;
  28   __asm__ __volatile__ ("fpatan" : "=t" (ret) : "0" (x), "u" (y) : "st(1)");
  29   return ret;
  30 }
  31
  32 #endif