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[Bug math/16400] New: ldbl-128 / ldbl-128ibm lgamma spurious underflows for small positive argument
- From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 06 Jan 2014 16:12:05 +0000
- Subject: [Bug math/16400] New: ldbl-128 / ldbl-128ibm lgamma spurious underflows for small positive argument
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=16400
Bug ID: 16400
Summary: ldbl-128 / ldbl-128ibm lgamma spurious underflows for
small positive argument
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
The ldbl-128 lgamma (also used for ldbl-128ibm) produces spurious underflows
for small positive arguments. E.g. for powerpc32:
Failure: lgamma (0x1p-1000): Exception "Underflow" set
Failure: lgamma (0x4p-1024): Exception "Underflow" set
Failure: lgamma (0x4p-1076): Exception "Underflow" set
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