diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2024-11-08 13:24:28 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2024-11-22 10:52:27 -0300 |
| commit | bccb0648ea29f89a7b1b64f3e5674d2338e3798e (patch) | |
| tree | 31849761a6d493625977c973db58c50669935fc9 /SHARED-FILES | |
| parent | d846f4c12d7636efd5b7cff173456e616a185e24 (diff) | |
math: Use tanf from CORE-MATH
The CORE-MATH implementation is correctly rounded (for any rounding mode)
and shows better performance to the generic tanf.
The code was adapted to glibc style, to use the definition of
math_config.h, to remove errno handling, and to use a generic
128 bit routine for ABIs that do not support it natively.
Benchtest on x64_64 (Ryzen 9 5900X, gcc 14.2.1), aarch64 (neoverse1,
gcc 13.2.1), and powerpc (POWER10, gcc 13.2.1):
latency master patched improvement
x86_64 82.3961 54.8052 33.49%
x86_64v2 82.3415 54.8052 33.44%
x86_64v3 69.3661 50.4864 27.22%
i686 219.271 45.5396 79.23%
aarch64 29.2127 19.1951 34.29%
power10 19.5060 16.2760 16.56%
reciprocal-throughput master patched improvement
x86_64 28.3976 19.7334 30.51%
x86_64v2 28.4568 19.7334 30.65%
x86_64v3 21.1815 16.1811 23.61%
i686 105.016 15.1426 85.58%
aarch64 18.1573 10.7681 40.70%
power10 8.7207 8.7097 0.13%
Signed-off-by: Alexei Sibidanov <sibid@uvic.ca>
Signed-off-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: DJ Delorie <dj@redhat.com>
Diffstat (limited to 'SHARED-FILES')
| -rw-r--r-- | SHARED-FILES | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/SHARED-FILES b/SHARED-FILES index 033ce7f092..9f4de81b66 100644 --- a/SHARED-FILES +++ b/SHARED-FILES @@ -288,3 +288,9 @@ sysdeps/ieee754/flt-32/e_lgammaf_r.c: - remove the errno stuff (this is done by the wrapper) - replace 0x1p127f * 0x1p127f by math_narrow_eval (x * 0x1p127f) - add libm_alias_finite (__ieee754_lgammaf_r, __lgammaf_r) at the end +sysdeps/ieee754/flt-32/s_tanf.c: + (src/binary32/tan/tanf.c in CORE-MATH) + - The code was adapted to use glibc code style and internal + functions to handle errno, overflow, and underflow. It was changed + to use an internal wrapper for 128 bit unsigned integer operations + for ABIs that do not support the type natively. |