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newlib-cygwin/newlib/libm/math
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Fabian Schriever 5fcf159b99 powf: Fix the hi+lo decomposition for 2/(3ln2) (FreeBSD) 
The decomposition needs to be into 12+24 bits of precision for extra-
precision multiplication, but was into 13+24 bits. On i386 with -O1 the
bug was hidden by accidental extra precision, but on amd64, in 2^32
trials the bug caused about 200000 errors of more than 1 ulp, with a
maximum error of about 80 ulps. Now the maximum error in 2^32 trials
on amd64 is 0.8573 ulps. It is still 0.8316 ulps on i386 with -O1.

The nearby decomposition of 1/ln2 and the decomposition of 2/(3ln2) in
the double precision version seem to be sub-optimal but not broken.

Reference: b4437c3d32
Original Author: Bruce Evans
2024-09-19 13:58:12 -04:00
..
e_acos.c
…
e_acosh.c
…
e_asin.c
…
e_atan2.c
Throughout, run newlib with -Wall -Werror option and fix bugs and
2012-08-08 11:04:18 +00:00
e_atanh.c
…
e_cosh.c
libm/math: Use __math_xflow in obsolete math code [v2]
2020-08-03 13:29:27 +02:00
e_exp.c
Fix a typo in the comment.
2022-12-16 12:18:28 -05:00
e_fmod.c
…
e_hypot.c
…
e_j0.c
Fix spurious underflow exceptions for Bessel functions for double(from glibc bug 14155)
2020-03-26 12:21:33 +01:00
e_j1.c
Fix spurious underflow exceptions for Bessel functions for double(from glibc bug 14155)
2020-03-26 12:21:33 +01:00
e_jn.c
…
e_log10.c
…
e_log.c
Fix 3 other instances of Reme typo (should be Remez)
2022-12-16 14:18:56 -05:00
e_pow.c
Replace always true if with else
2023-04-13 13:36:11 -04:00
e_rem_pio2.c
Throughout, run newlib with -Wall -Werror option and fix bugs and
2012-08-08 11:04:18 +00:00
e_remainder.c
…
e_scalb.c
e_scalb.c: Call scalbln instead of scalbn on 16-bit targets to ensure constant fits in an int.
2018-09-03 09:41:23 +02:00
e_sinh.c
…
e_sqrt.c
Fix rounding issues with sqrt/sqrtf
2021-06-04 14:42:58 -04:00
e_tgamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00
ef_acos.c
…
ef_acosh.c
…
ef_asin.c
…
ef_atan2.c
…
ef_atanh.c
…
ef_cosh.c
libm/math: Use __math_xflow in obsolete math code [v2]
2020-08-03 13:29:27 +02:00
ef_exp.c
libm/math: ensure that expf(-huge) sets FE_UNDERFLOW exception
2020-08-10 10:31:36 +02:00
ef_fmod.c
…
ef_hypot.c
Fix hypotf missing mask in hi+lo decomposition
2020-03-19 16:46:17 +01:00
ef_j0.c
Fix spurious underflow exceptions for Bessel functions for double(from glibc bug 14155)
2020-03-26 12:21:33 +01:00
ef_j1.c
Fix spurious underflow exceptions for Bessel functions for double(from glibc bug 14155)
2020-03-26 12:21:33 +01:00
ef_jn.c
newlib: fix various gcc warnings
2018-08-08 10:50:19 +02:00
ef_log10.c
…
ef_log.c
New expf, exp2f, logf, log2f and powf implementations
2017-10-13 10:58:00 +02:00
ef_pow.c
powf: Fix the hi+lo decomposition for 2/(3ln2) (FreeBSD)
2024-09-19 13:58:12 -04:00
ef_rem_pio2.c
…
ef_remainder.c
…
ef_scalb.c
2009-07-09 Craig Howland <howland@LGSInnovations.com>
2009-07-09 17:04:56 +00:00
ef_sinh.c
…
ef_sqrt.c
Fix rounding issues with sqrt/sqrtf
2021-06-04 14:42:58 -04:00
ef_tgamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00
el_hypot.c
* libc/include/complex.h (cabsl): Add prototype.
2015-02-06 16:14:04 +00:00
er_lgamma.c
Update gamma functions from code in picolibc
2020-12-17 16:23:43 -05:00
erf_lgamma.c
Improve lgammaf range for very small cases
2022-02-14 14:44:11 +01:00
k_cos.c
…
k_rem_pio2.c
newlib: fix various gcc warnings
2018-08-08 10:50:19 +02:00
k_sin.c
…
k_standard.c
libm: Make tgamma(-small) = -INFINITY
2020-09-18 17:20:27 -04:00
k_tan.c
Fix for k_tan.c specific inputs
2020-03-18 10:05:11 +01:00
kf_cos.c
…
kf_rem_pio2.c
Fix error in float trig. function range reduction
2020-03-03 16:45:22 +01:00
kf_sin.c
…
kf_tan.c
…
Makefile.inc
Move signgm.c from libc/reent to libm/math
2023-05-05 14:49:48 -04:00
math.tex
newlib: docs: add "Function " to every function node
2024-01-22 21:58:58 -05:00
s_asinh.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_atan.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_ceil.c
…
s_cos.c
…
s_erf.c
libm/math: Use __math_xflow in obsolete math code [v2]
2020-08-03 13:29:27 +02:00
s_fabs.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_floor.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_frexp.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_ldexp.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_signif.c
…
s_sin.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_tan.c
math: remove TRAD_SYNOPSIS
2017-12-01 03:41:53 -06:00
s_tanh.c
Fix rounding issues with sqrt/sqrtf
2021-06-04 14:42:58 -04:00
sf_asinh.c
…
sf_atan.c
…
sf_ceil.c
…
sf_cos.c
Remove unused variable 'one' from sf_cos.c
2018-08-29 15:57:27 +02:00
sf_erf.c
libm/math: Use __math_xflow in obsolete math code [v2]
2020-08-03 13:29:27 +02:00
sf_fabs.c
…
sf_floor.c
…
sf_frexp.c
…
sf_ldexp.c
…
sf_signif.c
…
sf_sin.c
Improve performance of sinf/cosf/sincosf
2018-06-21 09:37:04 +02:00
sf_tan.c
…
sf_tanh.c
Fix rounding issues with sqrt/sqrtf
2021-06-04 14:42:58 -04:00
signgam.c
Move signgm.c from libc/reent to libm/math
2023-05-05 14:49:48 -04:00
w_acos.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_acosh.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_asin.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_atan2.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_atanh.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_cosh.c
Remove HUGE_VAL definition from libm math functions
2019-01-23 10:46:30 +01:00
w_drem.c
…
w_exp2.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_exp.c
Remove HUGE_VAL definition from libm math functions
2019-01-23 10:46:30 +01:00
w_fmod.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_gamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00
w_hypot.c
Remove HUGE_VAL definition from libm math functions
2019-01-23 10:46:30 +01:00
w_j0.c
libm/math: Make yx functions set errno=ERANGE for x=0
2020-08-05 22:16:31 +02:00
w_j1.c
libm/math: Make yx functions set errno=ERANGE for x=0
2020-08-05 22:16:31 +02:00
w_jn.c
libm/math: Make yx functions set errno=ERANGE for x=0
2020-08-05 22:16:31 +02:00
w_lgamma.c
Add --enable-newlib-reent-thread-local option
2022-07-13 06:55:46 +02:00
w_log10.c
Remove HUGE_VAL definition from libm math functions
2019-01-23 10:46:30 +01:00
w_log.c
Remove HUGE_VAL definition from libm math functions
2019-01-23 10:46:30 +01:00
w_pow.c
libm/math: Don't modify __ieee754_pow return values in pow
2020-08-05 22:16:31 +02:00
w_remainder.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_scalb.c
Remove HUGE_VAL definition from libm math functions
2019-01-23 10:46:30 +01:00
w_sincos.c
…
w_sinh.c
Remove HUGE_VAL definition from libm math functions
2019-01-23 10:46:30 +01:00
w_sqrt.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
w_tgamma.c
fixes to make compilation succeeds
2020-12-18 10:06:31 +01:00
wf_acos.c
Use nanf() instead of nan() in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_acosh.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
wf_asin.c
Use nanf() instead of nan() in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_atan2.c
…
wf_atanh.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
wf_cosh.c
Use HUGE_VALF instead of HUGE_VAL in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_drem.c
…
wf_exp2.c
New expf, exp2f, logf, log2f and powf implementations
2017-10-13 10:58:00 +02:00
wf_exp.c
Fix expf overflow limit
2022-02-10 15:59:14 +01:00
wf_fmod.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
wf_gamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00
wf_hypot.c
Use HUGE_VALF instead of HUGE_VAL in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_j0.c
libm/math: Make yx functions set errno=ERANGE for x=0
2020-08-05 22:16:31 +02:00
wf_j1.c
libm/math: Make yx functions set errno=ERANGE for x=0
2020-08-05 22:16:31 +02:00
wf_jn.c
libm/math: Make yx functions set errno=ERANGE for x=0
2020-08-05 22:16:31 +02:00
wf_lgamma.c
libm/math: set errno to ERANGE at gamma poles
2020-08-05 22:16:31 +02:00
wf_log2.c
New expf, exp2f, logf, log2f and powf implementations
2017-10-13 10:58:00 +02:00
wf_log10.c
Use nanf() instead of nan() in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_log.c
Use nanf() instead of nan() in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_pow.c
libm/math: Don't modify __ieee754_pow return values in pow
2020-08-05 22:16:31 +02:00
wf_remainder.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
wf_scalb.c
Use HUGE_VALF instead of HUGE_VAL in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_sincos.c
Improve performance of sinf/cosf/sincosf
2018-06-21 09:37:04 +02:00
wf_sinh.c
Use HUGE_VALF instead of HUGE_VAL in single-precision float libm math functions
2019-01-23 10:46:30 +01:00
wf_sqrt.c
Remove matherr, and SVID and X/Open math library configurations
2019-01-23 10:46:24 +01:00
wf_tgamma.c
fixes to make compilation succeeds
2020-12-18 10:06:31 +01:00
wr_gamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00
wr_lgamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00
wrf_gamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00
wrf_lgamma.c
libm: Fix 'gamma' and 'gammaf' functions. Clean up other gamma code. [v2]
2020-09-04 21:27:11 +02:00