diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-11-19 15:21:44 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-11-19 15:21:44 -0300 |
| commit | 92186652d8653993ca51e97b895baf7edc745794 (patch) | |
| tree | 282404df025eb206013d60d96e05e0e5423ee30d /sysdeps | |
| parent | 56549264d1e1723dc8ad9675141f316dc83626b3 (diff) | |
math: Sync atanh from CORE-MATH
The CORE-MATH commit 703d7487 fixes some issues for RNDZ:
Failure: Test: atanh_towardzero (0x5.96200b978b69cp-4)
Result:
is: 3.6447730550366463e-01 0x1.753989ed16faap-2
should be: 3.6447730550366458e-01 0x1.753989ed16fa9p-2
difference: 5.5511151231257827e-17 0x1.0000000000000p-54
ulp : 1.0000
max.ulp : 0.0000
Maximal error of `atanh_towardzero'
is : 1 ulp
accepted: 0 ulp
Checked on x86_64-linux-gnu, x86_64-linux-gnu-v3, aarch64-linux-gnu,
and i686-linux-gnu.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/e_atanh.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/ieee754/dbl-64/e_atanh.c b/sysdeps/ieee754/dbl-64/e_atanh.c index 9ebc7bab84..68ef87818d 100644 --- a/sysdeps/ieee754/dbl-64/e_atanh.c +++ b/sysdeps/ieee754/dbl-64/e_atanh.c @@ -3,7 +3,7 @@ Copyright (c) 2023-2025 Alexei Sibidanov. The original version of this file was copied from the CORE-MATH -project (file src/binary64/atanh/atanh.c, revision 4da7f241). +project (file src/binary64/atanh/atanh.c, revision 703d7487). Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal @@ -147,7 +147,7 @@ __ieee754_atanh (double x) ll += f; lh *= copysign (1, x); ll *= copysign (1, x); - double eps = 31e-24 + dx2 * 0x1p-49; + double eps = 34e-24 + dx2 * 0x1p-49; double lb = lh + (ll - eps), ub = lh + (ll + eps); if (__glibc_likely (lb == ub)) return lb; |