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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2018-08-15 16:01:21 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2018-08-15 16:01:21 +0100 |
| commit | 126c4e3f804881f9fbc4eb71787f41793d2d7be5 (patch) | |
| tree | a8925aeea4de10fc9fdf788cabc89118e06cd892 /ChangeLog | |
| parent | 49acec179ca9fb2da961b78f56ef5ce501bbb50b (diff) | |
| download | glibc-126c4e3f804881f9fbc4eb71787f41793d2d7be5.tar.xz glibc-126c4e3f804881f9fbc4eb71787f41793d2d7be5.zip | |
Use generic sinf/cosf in lgammaf_r
The internal functions __kernel_sinf and __kernel_cosf are used only by
lgammaf_r. Removing the internal functions and using the generic sinf
and cosf is better overall. Benchmarking on Cortex-A72 shows the generic
sinf and cosf are 1.4x and 2.3x faster in the range |x| < PI/4, and 0.66x
and 1.1x for |x| < PI/2, so it should make lgammaf_r faster on average.
GLIBC regression tests pass on AArch64.
* sysdeps/ieee754/flt-32/e_lgammaf_r.c (sin_pif): Use __sinf/__cosf.
* sysdeps/ieee754/flt-32/k_cosf.c (__kernel_cosf): Remove all code.
* sysdeps/ieee754/flt-32/k_sinf.c (__kernel_sinf): Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -1,5 +1,11 @@ 2018-08-15 Wilco Dijkstra <wdijkstr@arm.com> + * sysdeps/ieee754/flt-32/e_lgammaf_r.c (sin_pif): Use __sinf/__cosf. + * sysdeps/ieee754/flt-32/k_cosf.c (__kernel_cosf): Remove all code. + * sysdeps/ieee754/flt-32/k_sinf.c (__kernel_sinf): Likewise. + +2018-08-15 Wilco Dijkstra <wdijkstr@arm.com> + * sysdeps/x86_64/fpu/libm-test-ulps: Regenerate to fix spaces. 2018-08-14 Florian Weimer <fweimer@redhat.com> |