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Szabolcs Nagy fb929067db New exp and exp2 implementations 
The new implementations are provided under !__OBSOLETE_MATH, they use
ISO C99 code.  There are several settings, with the default one the
worst case error in nearest rounding mode is 0.509 ULP for exp and
0.507 ULP for exp2 when a multiply and add is contracted into an fma.
They use a shared 2 KB lookup table, on aarch64 .text+.rodata size
of libm.a is increased by 1868 bytes.  The w_*.c wrappers are disabled
for the new code as it takes care of error handling inline.

The old exp2(x) code used to be just pow(2,x) so the speedup there
is more significant.

The file name has no special prefix to avoid any name collision with
existing files.

Improvements on Cortex-A72:
exp latency: 3.2x
exp thruput: 4.1x
exp2 latency: 7.8x
exp2 thruput: 18.8x
 		2018-06-27 15:40:49 +02:00
..
Makefile.am New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
Makefile.in New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
acoshl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
acosl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
asinhl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
asinl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
atan2l.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
atanhl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
atanl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
cbrtl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
ceill.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
copysignl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
cosf.c Improve performance of sinf/cosf/sincosf 2018-06-21 09:37:04 +02:00
coshl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
cosl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
erfcl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
erfl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
exp.c New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
exp2.c New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
exp2l.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
exp_data.c New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
expl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
expm1l.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
fabsl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
fdiml.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
fdlibm.h New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
floorl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
fmal.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
fmaxl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
fminl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
fmodl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
frexpl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
hypotl.c * libc/include/complex.h (cabsl): Add prototype. 2015-02-06 16:14:04 +00:00
ilogbl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
isgreater.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
ldexpl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
lgammal.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
llrintl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
llroundl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
local.h 2009-04-24 Jeff johnston <jjohnstn@redhat.com> 2009-04-24 22:49:55 +00:00
log1pl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
log2l.c 2014-12-15 Jonathan Roelofs <jonathan@codesourcery.com> 2014-12-15 20:50:23 +00:00
log10l.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
logbl.c 2014-12-15 Jonathan Roelofs <jonathan@codesourcery.com> 2014-12-15 20:50:23 +00:00
logl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
lrintl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
lroundl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
math_config.h New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
math_err.c New exp and exp2 implementations 2018-06-27 15:40:49 +02:00
math_errf.c Use uint32_t sign argument to math error functions 2018-06-27 15:40:49 +02:00
modfl.c 2013-11-19 Joel Sherrill <joel.sherrill@oarcorp.com> 2013-11-19 17:28:04 +00:00
nanl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
nearbyintl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
nextafterl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
nexttoward.c 2014-12-15 Jonathan Roelofs <jonathan@codesourcery.com> 2014-12-15 20:50:23 +00:00
nexttowardf.c Use _LDBL_EQ_DBL in nexttowardf.c 2018-05-07 12:22:12 -04:00
nexttowardl.c 2014-12-15 Jonathan Roelofs <jonathan@codesourcery.com> 2014-12-15 20:50:23 +00:00
powl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
remainderl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
remquol.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
rintl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
roundl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
s_cbrt.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_copysign.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_exp10.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_expm1.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_fdim.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_finite.c import newlib-2000-02-17 snapshot 2000-02-17 19:39:52 +00:00
s_fma.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_fmax.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_fmin.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_fpclassify.c 2007-04-25 Jeff Johnston <jjohnstn@redhat.com> 2007-04-25 22:28:19 +00:00
s_ilogb.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_infinity.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_isinf.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
s_isinfd.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
s_isnan.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_isnand.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
s_lib_ver.c 2006-09-13 Patrick Mansfield <patmans@us.ibm.com> 2006-09-13 22:06:43 +00:00
s_llrint.c fix llrint and lrint for 52 <= exponent <= 62 2018-05-29 15:59:48 +02:00
s_llround.c 2010-08-03 Craig Howland <howland@LGSInnovations.com> 2010-08-03 18:21:20 +00:00
s_log1p.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_log2.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_logb.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_lrint.c fix llrint and lrint for 52 <= exponent <= 62 2018-05-29 15:59:48 +02:00
s_lround.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_matherr.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_modf.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_nan.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_nearbyint.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_nextafter.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_pow10.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_remquo.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_rint.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_round.c libm/common/s_round.c (round): Add cast for 16-bit CPUs 2018-06-21 09:31:13 +02:00
s_scalbln.c * libm/common/s_fdim.c: New file. 2002-06-07 21:59:57 +00:00
s_scalbn.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_signbit.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
s_trunc.c libm/common: remove TRAD_SYNOPSIS 2017-12-01 03:41:53 -06:00
scalblnl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
scalbnl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
sf_cbrt.c * libc/include/machine/ieeefp.h: Comment about new configuration 2001-04-04 13:33:01 +00:00
sf_copysign.c import newlib-2000-02-17 snapshot 2000-02-17 19:39:52 +00:00
sf_exp.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_exp2.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_exp2_data.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_exp10.c 2007-05-17 Yaakov Selkowitz <yselkowitz <at> users.sourceforge.net> 2007-05-17 18:50:57 +00:00
sf_expm1.c * libc/include/machine/ieeefp.h: Comment about new configuration 2001-04-04 13:33:01 +00:00
sf_fdim.c 2009-03-25 Craig Howland <howland@LGSInnovations.com> 2009-03-25 19:13:24 +00:00
sf_finite.c * libc/include/machine/ieeefp.h: Comment about new configuration 2001-04-04 13:33:01 +00:00
sf_fma.c 2009-03-25 Craig Howland <howland@LGSInnovations.com> 2009-03-25 19:13:24 +00:00
sf_fmax.c 2005-08-10 Stephen Huw Clarke <stephen.clarke@st.com> 2005-08-10 21:02:28 +00:00
sf_fmin.c 2005-08-10 Stephen Huw Clarke <stephen.clarke@st.com> 2005-08-10 21:02:28 +00:00
sf_fpclassify.c 2007-04-25 Jeff Johnston <jjohnstn@redhat.com> 2007-04-25 22:28:19 +00:00
sf_ilogb.c 2010-02-11 Craig Howland <howland@LGSInnovations.com> 2010-02-11 21:00:33 +00:00
sf_infinity.c import newlib-2000-02-17 snapshot 2000-02-17 19:39:52 +00:00
sf_isinf.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
sf_isinff.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
sf_isnan.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
sf_isnanf.c ansification: remove _DEFUN 2018-01-17 11:47:26 -06:00
sf_llrint.c * libm/common/sf_llrint.c, libm/common/sf_round.c: Add explicit casts 2010-10-08 15:24:56 +00:00
sf_llround.c 2009-03-25 Craig Howland <howland@LGSInnovations.com> 2009-03-25 19:13:24 +00:00
sf_log.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_log1p.c * libc/include/machine/ieeefp.h: Comment about new configuration 2001-04-04 13:33:01 +00:00
sf_log2.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_log2_data.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_log_data.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_logb.c 2009-03-25 Craig Howland <howland@LGSInnovations.com> 2009-03-25 19:13:24 +00:00
sf_lrint.c Add new binutils target: moxie 2009-04-16 15:39:46 +00:00
sf_lround.c 2009-03-25 Craig Howland <howland@LGSInnovations.com> 2009-03-25 19:13:24 +00:00
sf_modf.c import newlib-2000-02-17 snapshot 2000-02-17 19:39:52 +00:00
sf_nan.c 2014-03-21 Maciej W. Rozycki <macro@codesourcery.com> 2014-03-21 21:27:29 +00:00
sf_nearbyint.c * libm/common/s_fdim.c: New file. 2002-06-07 21:59:57 +00:00
sf_nextafter.c * libc/include/machine/ieeefp.h: Comment about new configuration 2001-04-04 13:33:01 +00:00
sf_pow.c Use uint32_t sign argument to math error functions 2018-06-27 15:40:49 +02:00
sf_pow10.c 2007-05-17 Yaakov Selkowitz <yselkowitz <at> users.sourceforge.net> 2007-05-17 18:50:57 +00:00
sf_pow_log2_data.c New expf, exp2f, logf, log2f and powf implementations 2017-10-13 10:58:00 +02:00
sf_remquo.c 2009-03-25 Craig Howland <howland@LGSInnovations.com> 2009-03-25 19:13:24 +00:00
sf_rint.c 2010-03-08 Craig Howland <howland@LGSInnovations.com> 2010-03-08 17:16:37 +00:00
sf_round.c Throughout, run newlib with -Wall -Werror option and fix bugs and 2012-08-08 11:04:18 +00:00
sf_scalbln.c * libm/common/s_fdim.c: New file. 2002-06-07 21:59:57 +00:00
sf_scalbn.c * libc/include/machine/ieeefp.h: Comment about new configuration 2001-04-04 13:33:01 +00:00
sf_trunc.c * libm/common/s_fdim.c: New file. 2002-06-07 21:59:57 +00:00
sincosf.c Improve performance of sinf/cosf/sincosf 2018-06-21 09:37:04 +02:00
sincosf.h Improve performance of sinf/cosf/sincosf 2018-06-21 09:37:04 +02:00
sincosf_data.c Improve performance of sinf/cosf/sincosf 2018-06-21 09:37:04 +02:00
sinf.c Improve performance of sinf/cosf/sincosf 2018-06-21 09:37:04 +02:00
sinhl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
sinl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
sl_finite.c finitel: Use correct GCC builtin 2016-03-26 20:29:20 +01:00
sqrtl.c * libc/include/complex.h (cabsl): Add prototype. 2015-02-06 16:14:04 +00:00
tanhl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
tanl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
tgammal.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00
truncl.c 2009-04-17 Jeff johnston <jjohnstn@redhat.com> 2009-04-17 22:15:43 +00:00