bugGNU Common Lisp - Bugs: bug #30079, MINUSP handles float NaN...

 
 

bug #30079: MINUSP handles float NaN incorrectly in compiled code

Submitter:  None
Submitted:  Tue 08 Jun 2010 05:07:42 AM UTC
   
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  Fixed
Privacy:  Public Assigned to:  None
Open/Closed:  Closed
* Mandatory Fields

Add a New Comment Rich Markup
   

Thu 21 Nov 2013 03:53:13 PM UTC, comment #1: 

Greetings, and thanks for your report!  This is fixed in the latest release, 2.6.10.

Camm Maguire <camm>
Group administrator
Tue 08 Jun 2010 05:07:42 AM UTC, original submission:  

In the following, X is floating point infinity, Y is NaN.
MINUSP should return NIL for NaN, and in interpreted code it does, but in compiled code it is incorrect.

(setf si:*print-nans* t)
(defvar x (exp (expt 2 1000)))
(defvar y (- x x))
(defun f (x) (minusp x))
(defun g (x) (minusp x))
(compile 'g)
(f y)
 => NIL (OK)
(g y)
 => T (INCORRECT !!!)


Anonymous

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:
   
   
Comment:
   

No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -email is unavailable- added by camm (Posted a comment)
  •  

    There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.

    Only logged-in users can vote.

     

    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2013-11-21 camm StatusNone Fixed
        Open/ClosedOpen Closed

    Back to the top

    Powered by Savane 3.13-d3ae.
    Corresponding source code