[Pnet-developers] [bugs #10483] Modulus (%) borked

[Gopal.V]

This mail is an automated notification from the bugs tracker
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/**************************************************************************/
[bugs #10483] Latest Modifications:

Changes by: 
                Gopal.V <address@hidden>
'Date: 
                Thu 09/23/2004 at 17:44 (Asia/Calcutta)

------------------ Additional Follow-up Comments ----------------------------
I'm attaching my debug results and strangely this looks like a CPU bug ?.

See the float.log for the gdb logs which are clearly strange.
and the md_x86.c.hack for the changes need to start debugging
this problem

Using fprem instead of the IEEE fprem1 fixed the issue, but it's a sad day when 
FREM doesn't behave like IEEE float specs.








/**************************************************************************/
[bugs #10483] Full Item Snapshot:

URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=10483>
Project: DotGNU Portable.NET
Submitted by: Carl-Adam Brengesjo
On: Thu 09/23/2004 at 16:13

Category:  None
Severity:  7 - Major
Item Group:  None
Resolution:  None
Privacy:  Public
Assigned to:  None
Status:  Open


Summary:  Modulus (%) borked

Original Submission:  This is is really borked operation...
A simple mod operation of 3 and 2 results in -1 !!

test.cs:
using System;

class Foo
{
  static void Main()
  {
    Double x1 = 3, x2 = 2, x3 = x1 % x2;
    Console.WriteLine("x3 = {0} = {1} % {2}", x3, x1, x2);
  }
}

pnet output:
x3 = -1 = 3 % 2

expected:
x3 = 1 = 3 % 2

Follow-up Comments
------------------


-------------------------------------------------------
Date: Thu 09/23/2004 at 17:44       By: Gopal.V <t3rmin4t0r>
I'm attaching my debug results and strangely this looks like a CPU bug ?.

See the float.log for the gdb logs which are clearly strange.
and the md_x86.c.hack for the changes need to start debugging
this problem

Using fprem instead of the IEEE fprem1 fixed the issue, but it's a sad day when 
FREM doesn't behave like IEEE float specs.








File Attachments
-------------------

-------------------------------------------------------
Date: Thu 09/23/2004 at 17:44  Name: float.log  Size: 4.81KB   By: t3rmin4t0r
gdb log
http://savannah.gnu.org/bugs/download.php?item_id=10483&amp;item_file_id=1698






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