This is the mail archive of the gcc-bugs@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [Bug libstdc++/22200] numeric_limits<signed>::is_modulo is inconsistend with gcc

From: Andrew Pinski <pinskia at physics dot uc dot edu>
To: gcc-bugzilla at gcc dot gnu dot org
Cc: gcc-bugs at gcc dot gnu dot org
Date: Mon, 27 Jun 2005 12:53:28 -0400
Subject: Re: [Bug libstdc++/22200] numeric_limits<signed>::is_modulo is inconsistend with gcc
References: <20050627151911.22200.veksler@il.ibm.com> <20050627162502.3366.qmail@sourceware.org>

On Jun 27, 2005, at 12:25 PM, gdr at integrable-solutions dot net wrote:

| Actually it is modulo for all operations.

But then do read the comment as far as the loop optimizer is
concerned. It does not seem like it understands that it is modulo
arithmetic.


But that is because overflow is undefined, read what other people
have written.  It is modulo for all normal operations but it is still
undefined at what the output will be.

-- Pinski

References:
- [Bug libstdc++/22200] New: numeric_limits<signed>::is_modulo is inconsistend with gcc
  - From: veksler at il dot ibm dot com
- [Bug libstdc++/22200] numeric_limits<signed>::is_modulo is inconsistend with gcc
  - From: gdr at integrable-solutions dot net

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]