Bug 14996

Summary:	casinh, casin spurious overflows
Product:	glibc	Reporter:	Joseph Myers <jsm28>
Component:	math	Assignee:	Not yet assigned to anyone <unassigned>
Status:	RESOLVED FIXED
Severity:	normal	Flags:	fweimer: security-
Priority:	P2
Version:	2.16
Target Milestone:	---
Host:		Target:
Build:		Last reconfirmed:

Description Joseph Myers 2013-01-04 23:56:14 UTC

casinh (and so casin, which calls casinh) suffers spurious overflows on large arguments from internal calculations.  E.g., on x86_64, casinh (0x1.fp1023 + 0x1.fp1023i) raises spurious INVALID and OVERFLOW exceptions and returns a result that wrongly has infinite real part.

Comment 1 Joseph Myers 2013-01-07 15:02:14 UTC

Fixed for 2.18 by:

commit a9708fed779ff4e61e07ec2eae78e5c0753e1222
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Mon Jan 7 14:59:53 2013 +0000

    Fix casinh, casin overflow (bug 14996).