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From: Edward E Meyer <eem2314@origin.ca.boeing.com>
To: gcc-gnats@gcc.gnu.org
Subject: libstdc++/4622: incorrect implementation of complex operator/=
Date: Fri, 19 Oct 2001 13:56:00 -0000 [thread overview]
Message-ID: <200110192054.NAA64735@origin.ca.boeing.com> (raw)
>Number: 4622
>Category: libstdc++
>Synopsis: incorrect implementation of complex operator/=
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: wrong-code
>Submitter-Id: net
>Arrival-Date: Fri Oct 19 13:56:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Edward E Meyer
>Release: 3.0.1
>Organization:
Boeing
>Environment:
System: IRIX64 origin 6.5 01101245 IP35
host: mips-sgi-irix6.5
build: mips-sgi-irix6.5
target: mips-sgi-irix6.5
configured with: ../gcc-3.0.1/configure --prefix=/acct/eem2314/local
>Description:
the implementation of the operator/= function for std template complex
is wrong - the sign is reversed on the imaginary part on line 240 of
libstdc++-v3/include/bits/std_complex.h
>How-To-Repeat:
>Fix:
--- std_complex.h Fri Oct 19 20:04:32 2001
+++ std_complex.h.patch Fri Oct 19 20:05:41 2001
@@ -237,7 +237,7 @@
{
const _Tp __r = _M_real * __z.real() + _M_imag * __z.imag();
const _Tp __n = norm(__z);
- _M_imag = (_M_real * __z.imag() - _M_imag * __z.real()) / __n;
+ _M_imag = (_M_imag * __z.real() - _M_real * __z.imag()) / __n;
_M_real = __r / __n;
return *this;
}
>Release-Note:
>Audit-Trail:
>Unformatted:
next reply other threads:[~2001-10-19 13:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-19 13:56 Edward E Meyer [this message]
2001-10-25 23:15 bkoz
2001-10-31 0:36 bkoz
2001-11-04 11:26 bkoz
2001-11-04 13:29 bkoz
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