bugGNU Common Lisp - Bugs: bug #17541, floating point special values...


bug #17541: floating point special values provoke "Can't print a non-number"

Submitted by:  Robert Dodier <robert_dodier>
Submitted on:  Sun 27 Aug 2006 03:51:03 AM UTC  
Category:  None Severity:  3 - Normal
Item Group:  None Status:  Fixed
Privacy:  Public Assigned to:  None
Open/Closed:  Closed

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Thu 21 Nov 2013 10:02:27 PM UTC, comment #1:

Thanks for your report! (setq si::*print-nans* t) allows the printing of non-numbers.

Camm Maguire <camm>
Project Administrator
Sun 27 Aug 2006 03:51:03 AM UTC, original submission:

GCL 2.6.7 on Linux: GCL is happy enough to compute floating point infinity and not-a-number, but then it complains "Can't print a non-number" if an attempt is made to display the result.


>(* 2 most-positive-double-float)

Error in SYSTEM:TOP-LEVEL [or a callee]: Can't print a non-number.

>(* 2 most-negative-double-float)

Error in SYSTEM:TOP-LEVEL [or a callee]: Can't print a non-number.

>(- (* 2 most-positive-double-float) (* 2 most-positive-double-float))

Error in SYSTEM:TOP-LEVEL [or a callee]: Can't print a non-number.

I didn't check GCL's treatment of signed zero (dunno how to get GCL to compute a signed zero).

Robert Dodier <robert_dodier>


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    Follow 2 latest changes.

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

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