glibc/sysdeps/riscv
Adhemerval Zanella 7cfd8b5698 math: Use atanhf from CORE-MATH
The CORE-MATH implementation is correctly rounded (for any rounding mode)
and shows slight better performance to the generic atanhf.

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 (Neoverse-N1,
gcc 13.3.1), and powerpc (POWER10, gcc 13.2.1):

Latency                      master        patched   improvement
x86_64                      59.4930        45.8568        22.92%
x86_64v2                    59.5705        45.5804        23.48%
x86_64v3                    53.1838        37.7155        29.08%
i686                        169.354       133.5940        21.12%
aarch64 (Neoverse)          26.0781        16.9829        34.88%
power10                     15.6591        10.7623        31.27%

reciprocal-throughput        master        patched   improvement
x86_64                      23.5903        18.5766        21.25%
x86_64v2                    22.6489        18.2683        19.34%
x86_64v3                    19.0401        13.9474        26.75%
i686                        97.6034       107.3260        -9.96%
aarch64 (Neoverse)          15.3664        9.57846        37.67%
power10                      6.8877        4.6242         32.86%

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>
2024-12-18 17:24:43 -03:00
..
bits Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
multiarch riscv: Fix alignment-ignorant memcpy implementation 2024-03-12 14:38:08 -03:00
nofpu math: Use atanhf from CORE-MATH 2024-12-18 17:24:43 -03:00
nptl nptl: Add <thread_pointer.h> for RISC-V 2024-12-09 13:26:55 -05:00
rv32 Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rv64 Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rvd math: Use atanhf from CORE-MATH 2024-12-18 17:24:43 -03:00
rvf RISC-V: Use builtin for fma and fmaf 2024-11-25 16:45:59 -03:00
sys Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
Implies
Makefile RISC-V: Add support for dl_runtime_profile (BZ #31151) 2023-12-30 11:00:10 +01:00
__longjmp.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
bsd-_setjmp.c
bsd-setjmp.c
configure Convert to autoconf 2.72 (vanilla release, no distribution patches) 2024-06-17 21:15:28 +02:00
configure.ac RISC-V: Enable static-pie. 2024-01-12 15:11:45 -03:00
dl-irel.h riscv: Add __riscv_hwprobe pointer to ifunc calls 2024-03-01 07:14:58 -08:00
dl-link.sym RISC-V: Add support for dl_runtime_profile (BZ #31151) 2023-12-30 11:00:10 +01:00
dl-machine.h RISC-V: Fix the static-PIE non-relocated object check 2024-03-25 15:17:13 +01:00
dl-relocate-ld.h 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-trampoline.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
e_sqrtl.c 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
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
linkmap.h
machine-gmon.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
math-tests-snan-payload.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
math-tests-trap.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
preconfigure configure: Use autoconf 2.71 2023-07-17 10:08:10 -04:00
preconfigure.ac
riscv-ifunc.h riscv: Enable multi-arg ifunc resolvers 2024-03-01 07:14:59 -08:00
setjmp.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sfp-machine.h 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
start.S riscv: align .preinit_array (bug 32228) 2024-10-02 13:04:30 +02:00
string-fza.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
string-fzi.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tininess.h
tst-audit.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
utmp-size.h login: Check default sizes of structs utmp, utmpx, lastlog 2024-04-19 14:38:17 +02:00