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| author | Andoni Arregi <andoni.arregui@gtd-gmbh.de> | 2023-04-12 17:34:43 +0200 |
|---|---|---|
| committer | Jeff Johnston <jjohnstn@redhat.com> | 2023-04-13 13:33:46 -0400 |
| commit | e5a36e6af7c52b70fbc8c11a888220d8579e0275 (patch) | |
| tree | 2f7f136795d3097586392e0dcb0d79c82226da5e /newlib | |
| parent | 5a961061de7d70bd3568270185c3189e20958e68 (diff) | |
| download | newlib-e5a36e6af7c52b70fbc8c11a888220d8579e0275.zip newlib-e5a36e6af7c52b70fbc8c11a888220d8579e0275.tar.gz newlib-e5a36e6af7c52b70fbc8c11a888220d8579e0275.tar.bz2 | |
Fix x close to 1, y between 2^31 and 2^64
E.g. known errors:
x = 0x1.000002c5e2e99p+0, y = 0x1.c9eee35374af6p+31 had an error of 639
ULP and is now correctly rounded.
x = 0x1.fffffd2e3e669p-1, y = 0x1.344c9823eb66cp+32 had an error of 428
ULP and is now correctly rounded.
Diffstat (limited to 'newlib')
| -rw-r--r-- | newlib/libm/math/e_pow.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/newlib/libm/math/e_pow.c b/newlib/libm/math/e_pow.c index f02f76d..f24a98f 100644 --- a/newlib/libm/math/e_pow.c +++ b/newlib/libm/math/e_pow.c @@ -196,8 +196,8 @@ ivln2_l = 1.92596299112661746887e-08; /* 0x3E54AE0B, 0xF85DDF44 =1/ln2 tail*/ } /* |y| is huge */ - if(iy>0x41e00000) { /* if |y| > 2**31 */ - if(iy>0x43f00000){ /* if |y| > 2**64, must o/uflow and y is an even integer */ + if(iy>0x42000000) { /* if |y| > ~2**33 (does not regard mantissa) */ + if(iy>0x43f00000){ /* if |y| > ~2**64, must o/uflow and y is an even integer */ if(ix<=0x3fefffff) return (hy<0)? __math_oflow(0):__math_uflow(0); if(ix>=0x3ff00000) return (hy>0)? __math_oflow(0):__math_uflow(0); } |