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Adhemerval Zanella 8ae9e51376 math: Use log1pf from CORE-MATH 
The CORE-MATH implementation is correctly rounded (for any rounding mode)
and shows slight better performance to the generic log1pf.

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                      71.8142        38.9668        45.74%
x86_64v2                    71.9094        39.1321        45.58%
x86_64v3                    60.1000        32.4016        46.09%
i686                        147.105        104.258        29.13%
aarch64                     26.4439        14.0050        47.04%
power10                     19.4874         9.4146        51.69%
powerpc                     17.6145        8.00736        54.54%

reciprocal-throughput        master        patched   improvement
x86_64                      19.7604        12.7254        35.60%
x86_64v2                    19.0039        11.9455        37.14%
x86_64v3                    16.8559        11.9317        29.21%
i686                        82.3426        73.9718        10.17%
aarch64                     14.4665         7.9614        44.97%
power10                     11.9974         8.4117        29.89%
powerpc                     7.15222         6.0914        14.83%

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>
 		2024-11-01 11:27:39 -03:00
..
bits Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
fpu math: Use log1pf from CORE-MATH 2024-11-01 11:27:39 -03:00
nofpu math: Use log1pf from CORE-MATH 2024-11-01 11:27:39 -03:00
nptl Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
power4 Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
power6 Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
powerpc32 nptl: Fix Race conditions in pthread cancellation [BZ#12683] 2024-08-23 14:27:43 -03:00
powerpc64 powerpc64le: Adhere to ABI stack alignment requirement 2024-10-28 16:12:34 -05:00
sys/platform Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
Makefile powerpc: Fix unrecognized instruction errors with recent binutils 2021-09-29 14:42:20 -05:00
Versions powerpc: Add space for HWCAP3/HWCAP4 in the TCB for future Power. 2023-12-15 20:20:14 -06:00
abort-instr.h
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atomic-machine.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-lookupcfg.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-procinfo.c powerpc: Add HWCAP3/HWCAP4 data to TCB for Power Architecture. 2024-03-19 17:19:27 -05:00
dl-procinfo.h elf: Remove HWCAP_IMPORTANT 2024-06-18 10:45:36 +02:00
dl-tls.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tls.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tunables.list Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
elf-initfini.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
fpu_control.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
gccframe.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
hwcapinfo.c powerpc: Add HWCAP3/HWCAP4 data to TCB for Power Architecture. 2024-03-19 17:19:27 -05:00
hwcapinfo.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
ifunc-sel.h
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jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
ldsodefs.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libc-tls.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
locale-defines.sym
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longjmp.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
machine-gmon.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
math-tests-snan-cast.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
math-use-builtins-ffs.h string: Use builtins for ffs and ffsll 2024-02-01 09:31:33 -03:00
mod-cache-ppc.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
mod-tlsopt-powerpc.c elf/tst-tlsopt-powerpc fails when compiled with -mcpu=power10 (BZ# 29776) 2022-11-14 22:04:25 +10:30
mp_clz_tab.c
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novmx-longjmp.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
novmx-sigjmp.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
novmxsetjmp.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
preconfigure powerpc: Placeholder and infrastructure/build support to add Power11 related changes. 2024-03-19 21:11:34 -05:00
preconfigure.ac powerpc: Placeholder and infrastructure/build support to add Power11 related changes. 2024-03-19 21:11:34 -05:00
rtld-global-offsets.sym powerpc: Move cache line size to rtld_global_ro 2020-01-17 09:05:03 -03:00
sigjmp.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sotruss-lib.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stackinfo.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
string-fza.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sysdep.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
test-arith.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
test-arithf.c
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test-get_hwcap-static.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
test-get_hwcap.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
test-gettimebase.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-cache-ppc-static-dlopen.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-cache-ppc-static.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-cache-ppc.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-set_ppr.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-stack-align.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-tlsifunc-static.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-tlsifunc.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-tlsopt-powerpc.c
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utmp-size.h login: Check default sizes of structs utmp, utmpx, lastlog 2024-04-19 14:38:17 +02:00