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author | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2012-09-25 14:42:18 +0000 |
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committer | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2012-09-25 14:42:18 +0000 |
commit | aeb5b827c5f7ed858a5b15101d1a3893356cc6ba (patch) | |
tree | 5d8e4382197847df3cf875caac4994390b6f1094 /libc/ports/sysdeps/alpha/fpu/get-rounding-mode.h | |
parent | 598804b7d4191eddbaf24784c3b25a6c4d6f33cd (diff) | |
download | eglibc2-aeb5b827c5f7ed858a5b15101d1a3893356cc6ba.tar.gz |
Merge changes between r20391 and r20863 from /fsf/trunk.
git-svn-id: svn://svn.eglibc.org/trunk@20864 7b3dc134-2b1b-0410-93df-9e9f96275f8d
Diffstat (limited to 'libc/ports/sysdeps/alpha/fpu/get-rounding-mode.h')
-rw-r--r-- | libc/ports/sysdeps/alpha/fpu/get-rounding-mode.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/ports/sysdeps/alpha/fpu/get-rounding-mode.h b/libc/ports/sysdeps/alpha/fpu/get-rounding-mode.h new file mode 100644 index 000000000..9d5b7246a --- /dev/null +++ b/libc/ports/sysdeps/alpha/fpu/get-rounding-mode.h @@ -0,0 +1,35 @@ +/* Determine floating-point rounding mode within libc. Alpha version. + Copyright (C) 2012 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef ALPHA_GET_ROUNDING_MODE_H +#define ALPHA_GET_ROUNDING_MODE_H 1 + +#include <fenv.h> +#include <fenv_libc.h> + +/* Return the floating-point rounding mode. */ + +static inline int +get_rounding_mode (void) +{ + unsigned long fpcr; + __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr)); + return (fpcr >> FPCR_ROUND_SHIFT) & 3; +} + +#endif /* get-rounding-mode.h */ |