Re: Re: negative exponents

Here is the patch for this problem:

http://www.cormanlisp.com/CormanLisp/patches/2_5/

The file is math2.lisp.

Roger
----------------
At 01:53 PM 11/3/2003, you wrote:
>I will check this out and try to get a patch out right away. I will notify this message group when it's resolved.
>Roger
>
>At 02:52 AM 11/3/2003, you wrote:
>>Hi Nigel,
>>
>>
>>>    Date: Mon, 3 Nov 2003 10:48:04 +1000
>>>    From: [email protected]
>>> Subject: negative exponents in negative doubles
>>>
>>> why does in IDE
>>> (setf z 4.0D-5)
>>> echo
>>> 4.0d-5
>>>
>>> while
>>> (setf zz -4.0D-5)
>>> echo
>>> -4.0d0
>>
>>        Whoa... I reproduced your example.  An even simpler version is:
>>
>>        Try evaluating
>>
>>-1e+5
>>echo
>>0.0
>>
>>        It seems that any negative number for the mantissa will fail, 
>>regardless of the exponent.
>>
>>        This is really bad!  I'm hoping to do some scientific computing in 
>>CormanLisp.
>>
>>        Any patches or suggestions?  My problem is my code might accidently 
>>parse text data with -1e+5 without my knowing, and without returning an 
>>error, and then evaluating it to 0.0.
>>
>>Sincerely,
>>--Anthony Yan
>>
>>
>>
>>To unsubscribe from this group, send an email to:
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>>
>> 
>>
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>
>
>
>
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>[email protected]
>
> 
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