sysdeps/powerpc/fpu/math_private.h

   1 /* Private inline math functions for powerpc.
   2    Copyright (C) 2006-2022 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 _PPC_MATH_PRIVATE_H_
  20 #define _PPC_MATH_PRIVATE_H_
  21
  22 #include <sysdep.h>
  23 #include <ldsodefs.h>
  24 #include <dl-procinfo.h>
  25
  26 #include_next <math_private.h>
  27
  28 #ifdef _ARCH_PWR9
  29
  30 #if __GNUC_PREREQ (8, 0)
  31 # define _GL_HAS_BUILTIN_ILOGB 1
  32 #elif defined __has_builtin
  33 # define _GL_HAS_BUILTIN_ILOGB __has_builtin (__builtin_vsx_scalar_extract_exp)
  34 #else
  35 # define _GL_HAS_BUILTIN_ILOGB 0
  36 #endif
  37
  38 #define __builtin_test_dc_ilogbf __builtin_test_dc_ilogb
  39 #define __builtin_ilogbf __builtin_ilogb
  40
  41 #define __builtin_test_dc_ilogb(x, y) \
  42         __builtin_vsx_scalar_test_data_class_dp(x, y)
  43 #define __builtin_ilogb(x) __builtin_vsx_scalar_extract_exp(x) - 0x3ff
  44
  45 #define __builtin_test_dc_ilogbf128(x, y) \
  46         __builtin_vsx_scalar_test_data_class_qp(x, y)
  47 #define __builtin_ilogbf128(x) __builtin_vsx_scalar_extract_expq(x) - 0x3fff
  48
  49 #if __HAVE_DISTINCT_FLOAT128
  50 extern __always_inline _Float128
  51 __ieee754_sqrtf128 (_Float128 __x)
  52 {
  53   _Float128 __z;
  54   asm ("xssqrtqp %0,%1" : "=v" (__z) : "v" (__x));
  55   return __z;
  56 }
  57 #endif
  58 #else /* !_ARCH_PWR9 */
  59 #define _GL_HAS_BUILTIN_ILOGB 0
  60 #endif
  61
  62 #endif /* _PPC_MATH_PRIVATE_H_ */