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[Bug math/16354] New: cosh spurious underflows
- From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 20 Dec 2013 18:11:26 +0000
- Subject: [Bug math/16354] New: cosh spurious underflows
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=16354
Bug ID: 16354
Summary: cosh spurious underflows
Product: glibc
Version: 2.19
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
On x86_64, for long double, cosh of subnormals produces spurious underflow
exceptions:
Failure: cosh (0x2p-16384): Exception "Underflow" set
It looks likely that other versions of cosh have the same bug, arising from use
of expm1, except for it being covered up by bug 16353 meaning some expm1
versions fail to raise the exception when they should.
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