glibc/sysdeps/ieee754
Akila Welihinda 3b1402b3fc sysdeps: Simplify sin Taylor Series calculation
The macro TAYLOR_SIN adds the term `-0.5*da*a^2 + da` in hopes
of regaining some precision as a function of da. However the
comment says we add the term `-0.5*da*a^2 + 0.5*da` which is
different. This fix updates the comment to reflect the
code and also simplifies the calculation by replacing `a` with `x`
because they always have the same value.

Signed-off-by: Akila Welihinda <akilawelihinda@ucla.edu>
Reviewed-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
2021-12-13 15:31:05 +01:00
..
dbl-64 sysdeps: Simplify sin Taylor Series calculation 2021-12-13 15:31:05 +01:00
float128 powerpc64le: Avoid conflicting types for f64xfmaf128 when IFUNC is not used 2021-09-23 19:29:54 -03:00
flt-32 math: Remove the error handling wrapper from hypot and hypotf 2021-12-13 10:08:46 -03:00
ldbl-64-128 Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ldbl-96 math: Use an improved algorithm for hypotl (ldbl-96) 2021-12-13 09:02:34 -03:00
ldbl-128 math: Use an improved algorithm for hypotl (ldbl-128) 2021-12-13 09:02:34 -03:00
ldbl-128ibm Add narrowing fma functions 2021-09-22 21:25:31 +00:00
ldbl-128ibm-compat Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
ldbl-opt Add fmaximum, fminimum functions 2021-09-28 23:31:35 +00:00
soft-fp Add narrowing fma functions 2021-09-22 21:25:31 +00:00
ieee754.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
k_standard.c Use copysign functions not __copysign functions in glibc libm. 2018-09-27 20:04:48 +00:00
k_standardf.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
k_standardl.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libm-alias-finite.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile Avoid -Wno-write-strings for k_standard.c. 2015-02-26 22:50:54 +00:00
s_lib_version.c Simplify math-svid-compat code. 2017-08-28 15:19:52 +00:00
s_matherr.c Obsolete matherr, _LIB_VERSION, libieee.a. 2017-08-21 17:45:10 +00:00
s_signgam.c Remove unnecessary math_private.h includes. 2018-09-28 21:53:33 +00:00