From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-prs-return-34895-listarch-gcc-prs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 24106 invoked by alias); 10 May 2003 19:36:01 -0000
Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-prs/>
List-Post: <mailto:gcc-prs@gcc.gnu.org>
List-Help: <mailto:gcc-prs-help@gcc.gnu.org>
Sender: gcc-prs-owner@gcc.gnu.org
Received: (qmail 24088 invoked by uid 71); 10 May 2003 19:36:00 -0000
Date: Sat, 10 May 2003 19:36:00 -0000
Message-ID: <20030510193600.24085.qmail@sources.redhat.com>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
From: Dara Hazeghi <dhazeghi@yahoo.com>
Subject: Re: libstdc++/10689: pow(std::complex(0),1/3) returns (nan, nan) instead of 0.
Reply-To: Dara Hazeghi <dhazeghi@yahoo.com>
X-SW-Source: 2003-05/txt/msg00983.txt.bz2
List-Id: <gcc-prs.sourceware.org>

The following reply was made to PR libstdc++/10689; it has been noted by GNATS.

From: Dara Hazeghi <dhazeghi@yahoo.com>
To: gcc-gnats@gcc.gnu.org, Daniel.Levine@jhuapl.edu
Cc:  
Subject: Re: libstdc++/10689: pow(std::complex(0),1/3) returns (nan, nan) instead of 0.
Date: Sat, 10 May 2003 12:26:42 -0700

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 trail&database=gcc&pr=10689
 
 Hello,
 
 I can confirm this problem with 3.3 branch and mainline (20030508).  
 However, next time you send in a testcase, make sure it compilers first.
 
 Dara
 
 #include <iostream>
 #include <complex>
   using namespace std;
 int main() {
   complex<double> complexZero;
   complex<double> cubeRootof0;
   complex<double> zeroToThe1;
   cubeRootof0 = pow(complexZero, 1.0/3.0);
   cerr << cubeRootof0 << endl; // Should be 0.0;
   zeroToThe1 = pow(complexZero, 1.0);
   cerr << zeroToThe1 << endl; // Should be 0.0;
   zeroToThe1 = pow(complexZero, 1);
   cerr << zeroToThe1 << endl; // Is 0.0;
 }