Date: Mon, 11 Feb 2013 15:15:46 GMT From: Pedro Giffuni <giffunip@tutopia.com> To: freebsd-gnats-submit@FreeBSD.org Subject: standards/176031: [msun] pow() returns roots of negative values. Message-ID: <201302111515.r1BFFklI090495@red.freebsd.org> Resent-Message-ID: <201302111520.r1BFK1m5032992@freefall.freebsd.org>
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>Number: 176031 >Category: standards >Synopsis: [msun] pow() returns roots of negative values. >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-standards >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Feb 11 15:20:00 UTC 2013 >Closed-Date: >Last-Modified: >Originator: Pedro Giffuni >Release: 9.1-PRERELEASE >Organization: >Environment: FreeBSD pcbsd-8555 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #7: Sun Oct 7 00:05:03 COT 2012 Pedro@pcbsd-8555:/usr/src/sys/amd64/compile/GENERIC amd64 >Description: I think there is a bug in our pow(). According to IEEE 754, pow(x,y) signals the invalid operation exception when x <0 and y is a non-integer value. (-3)^1.5 returns -3 in FreeBSD, on Windows it produces an error. >How-To-Repeat: This was seen in OpenOffice (which uses pow() ). >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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