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Bug #19878
closedMath.log is broken for bignum
Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
ruby 3.3.0dev (2023-09-04T01:35:26Z master 2ac3e9abe9) [x86_64-linux]
Description
p Math.log(2 ** 1020, 10) #=> 307.0505955772608
p Math.log(2 ** 1021, 10) #=> 307.35162557292483
p Math.log(2 ** 1022, 10) #=> 307.6526555685888
p Math.log(2 ** 1023, 10) #=> 688.6994720982339 <- WHAT!?
p Math.log(2 ** 1024, 10) #=> 689.3926192787939
p Math.log(2 ** 1025, 10) #=> 690.0857664593537
Updated by mame (Yusuke Endoh) 10 months ago
Updated by mame (Yusuke Endoh) 10 months ago
- Backport changed from 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN to 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED
Updated by mame (Yusuke Endoh) 10 months ago
Fortunately, this bug was introduced this year on da39936ce165ea9462b9e192eb6b608485c94842 so no need to backport.
Updated by mame (Yusuke Endoh) 10 months ago
- Status changed from Open to Closed
Applied in changeset git|411572661a3995a0daacb6c866ea3ac6b52ad25b.
math.c: Fix Math.log against huge bignum [Bug #19878]
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