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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2021-06-08 13:33:09 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2021-06-08 13:33:09 +0100 |
| commit | 6a86bc099219a656be479d5f31ff90ec7860b112 (patch) | |
| tree | bd87bb83418d61806d268464f16d0149b376622c /sysdeps | |
| parent | b190bccc8a7e4919d3bd68a153577284f201819a (diff) | |
| download | glibc-6a86bc099219a656be479d5f31ff90ec7860b112.tar.gz glibc-6a86bc099219a656be479d5f31ff90ec7860b112.tar.xz glibc-6a86bc099219a656be479d5f31ff90ec7860b112.zip | |
AArch64: Add support for roundeven[f]
Add inline assembler for the roundeven functions. Passes GLIBC regression. Note GCC does not inline the builtin (PR100966), so this cannot be used for now.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/aarch64/fpu/s_roundeven.c | 29 | ||||
| -rw-r--r-- | sysdeps/aarch64/fpu/s_roundevenf.c | 28 |
2 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/aarch64/fpu/s_roundeven.c b/sysdeps/aarch64/fpu/s_roundeven.c new file mode 100644 index 0000000000..d74b40daf5 --- /dev/null +++ b/sysdeps/aarch64/fpu/s_roundeven.c @@ -0,0 +1,29 @@ +/* Copyright (C) 2021 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/>. */ + +#include <math.h> +#include <libm-alias-double.h> + +double +__roundeven (double x) +{ + asm volatile ("frintn \t%d0, %d1" : "=w" (x) : "w" (x)); + return x; +} +hidden_def (__roundeven) +libm_alias_double (__roundeven, roundeven) diff --git a/sysdeps/aarch64/fpu/s_roundevenf.c b/sysdeps/aarch64/fpu/s_roundevenf.c new file mode 100644 index 0000000000..dfc492c2f8 --- /dev/null +++ b/sysdeps/aarch64/fpu/s_roundevenf.c @@ -0,0 +1,28 @@ +/* Copyright (C) 2021 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/>. */ + +#include <math.h> +#include <libm-alias-float.h> + +float +__roundevenf (float x) +{ + asm volatile ("frintn \t%s0, %s1" : "=w" (x) : "w" (x)); + return x; +} +libm_alias_float (__roundeven, roundeven) |