diff options
Diffstat (limited to 'sysdeps/s390')
| -rw-r--r-- | sysdeps/s390/fpu/math-use-builtins.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/s390/fpu/math-use-builtins.h b/sysdeps/s390/fpu/math-use-builtins.h new file mode 100644 index 0000000000..7abbfb3b50 --- /dev/null +++ b/sysdeps/s390/fpu/math-use-builtins.h @@ -0,0 +1,49 @@ +/* Using math gcc builtins instead of generic implementation. s390/s390x version. + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef MATH_USE_BUILTINS_S390_H +#define MATH_USE_BUILTINS_S390_H 1 + +#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT + +# include <features.h> /* For __GNUC_PREREQ. */ + +/* GCC emits the z196 zarch "load fp integer" instructions for these + builtins if build with at least --march=z196 -mzarch. Otherwise a + function call to libc is emitted. */ +# define USE_NEARBYINT_BUILTIN 1 +# define USE_NEARBYINTF_BUILTIN 1 +# define USE_NEARBYINTL_BUILTIN 1 + +# if __GNUC_PREREQ (8, 0) +# define USE_NEARBYINTF128_BUILTIN 1 +# else +# define USE_NEARBYINTF128_BUILTIN 0 +# endif + +#else + +/* Disable the builtins if we do not have the z196 zarch instructions. */ +# define USE_NEARBYINT_BUILTIN 0 +# define USE_NEARBYINTF_BUILTIN 0 +# define USE_NEARBYINTL_BUILTIN 0 +# define USE_NEARBYINTF128_BUILTIN 0 + +#endif /* ! HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT */ + +#endif /* math-use-builtins.h */ |