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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2024-10-25 15:21:53 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2024-11-01 11:27:40 -0300
commitf338c7c5f526a86be2de7205d1e0876ff02e2087 (patch)
tree872a9456f1d347e556120bc0b0f2600d9176ea54 /SHARED-FILES
parent8ae9e513762b1a67bac854871fc02988feb22efb (diff)
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math: Use log10p1f from CORE-MATH
The CORE-MATH implementation is correctly rounded (for any rounding mode)
and shows slight better performance to the generic log10p1f.

The code was adapted to glibc style and to use the definition of
math_config.h (to handle errno, overflow, and underflow).

Benchtest on x64_64 (Ryzen 9 5900X, gcc 14.2.1), aarch64 (M1,
gcc 13.2.1), and powerpc (POWER10, gcc 13.2.1):

Latency                      master        patched   improvement
x86_64                      68.5251        32.2627        52.92%
x86_64v2                    68.8912        32.7887        52.41%
x86_64v3                    59.3427        27.0521        54.41%
i686                        162.026        103.383        36.19%
aarch64                     26.8513        14.5695        45.74%
power10                     12.7426         8.4929        33.35%
powerpc                     16.6768        9.29135        44.29%

reciprocal-throughput        master        patched   improvement
x86_64                      26.0969        12.4023        52.48%
x86_64v2                    25.0045        11.0748        55.71%
x86_64v3                    20.5610        10.2995        49.91%
i686                        89.8842        78.5211        12.64%
aarch64                     17.1200         9.4832        44.61%
power10                      6.7814         6.4258         5.24%
powerpc                      15.769         7.6825        51.28%

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-FILES4
1 files changed, 4 insertions, 0 deletions
diff --git a/SHARED-FILES b/SHARED-FILES
index 7fa54a5c9d..228f415dfd 100644
--- a/SHARED-FILES
+++ b/SHARED-FILES
@@ -264,3 +264,7 @@ sysdeps/ieee754/flt-32/s_log1pf.c
   (file src/binary32/log1p/log1pf.c in CORE-MATH)
   - The code was adapted to use glibc code style and internal
     functions to handle errno, overflow, and underflow.
+sysdeps/ieee754/flt-32/s_log10p1f.c
+  (file src/binary32/log10p1/log10p1f.c in CORE-MATH)
+  - The code was adapted to use glibc code style and internal
+    functions to handle errno, overflow, and underflow.