OpenE2K
/
glibc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
glibc/sysdeps/ia64
History
Szabolcs Nagy 4ea49f4c08 New generic powf 
without wrapper on aarch64:
powf reciprocal-throughput: 4.2x faster
powf latency: 2.6x faster
old worst-case error: 1.11 ulp
new worst-case error: 0.82 ulp
aarch64 .text size: -780 bytes
aarch64 .rodata size: +144 bytes

powf(x,y) is implemented as exp2(y*log2(x)) with the same algorithms
that are used in exp2f and log2f, except that the log2f polynomial is
larger for extra precision and its output (and exp2f input) may be
scaled by a power of 2 (POWF_SCALE) to simplify the argument reduction
step of exp2 (possible when efficient round and convert toint operation
is available).

The special case handling tries to minimize the checks in the hot path.
When the input of exp2_inline is checked, int arithmetics is used as
that was faster on the tested aarch64 cores.

	* math/Makefile (type-float-routines): Add e_powf_log2_data.
	* sysdeps/ieee754/flt-32/e_powf.c: New implementation.
	* sysdeps/ieee754/flt-32/e_powf_log2_data.c: New file.
	* sysdeps/ieee754/flt-32/math_config.h (__powf_log2_data): Define.
	(issignalingf_inline): Likewise.
	(POWF_LOG2_TABLE_BITS): Likewise.
	(POWF_LOG2_POLY_ORDER): Likewise.
	(POWF_SCALE_BITS): Likewise.
	(POWF_SCALE): Likewise.
	* sysdeps/i386/fpu/e_powf_log2_data.c: New file.
	* sysdeps/ia64/fpu/e_powf_log2_data.c: New file.
	* sysdeps/m68k/m680x0/fpu/e_powf_log2_data.c: New file.
 		2017-09-29 17:30:53 +01:00
..
bits Simplify HUGE_VAL definitions. 2017-08-31 15:50:50 +00:00
fpu New generic powf 2017-09-29 17:30:53 +01:00
nptl Move shared pthread definitions to common headers 2017-05-09 17:49:17 -03:00
Implies Add float128 support for ia64. 2017-06-26 22:50:45 +00:00
Makeconfig ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
Makefile Add float128 support for ia64. 2017-06-26 22:50:45 +00:00
Versions hppa/ia64: _dl_unmap: make it hidden 2015-07-16 09:03:46 -04:00
_mcount.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
abort-instr.h ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
atomic-machine.h Optimize generic spinlock code and use C11 like atomic macros. 2017-06-06 09:41:56 +02:00
backtrace.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
bcopy.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
bzero.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
configure Require autoconf 2.69 2014-09-29 07:53:36 -07:00
configure.ac Require autoconf 2.69 2014-09-29 07:53:36 -07:00
crti.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
crtn.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-dtprocnum.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-fptr.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-lookupcfg.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-machine.h PowerPC64 ELFv2 PPC64_OPT_LOCALENTRY 2017-06-14 10:47:25 +09:30
dl-sysdep.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-tls.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
entry.h ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
float128-abi.h Add float128 support for ia64. 2017-06-26 22:50:45 +00:00
gccframe.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
hp-timing.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
htonl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
htons.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ia64libgcc.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
ieee754.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ldbl2mpn.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
libc-tls.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
linkmap.h Rename bits/linkmap.h to linkmap.h (bug 14912). 2015-09-04 19:44:27 +00:00
machine-gmon.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
math-tests.h Add float128 support for ia64. 2017-06-26 22:50:45 +00:00
memccpy.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memchr.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcmp.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcpy.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memmove.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memset.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memusage.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sched_cpucount.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
softpipe.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sotruss-lib.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
stackguard-macros.h ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
stackinfo.h Fix ia64 executable stack default (bug 22156). 2017-09-26 16:30:46 +00:00
start.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strchr.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcmp.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcpy.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strlen.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strncmp.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strncpy.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tininess.h ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
tls-macros.h ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
tst-audit.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00