The same result in Maxima 5.26 and 5.27 under Win XP:
float((2^60-1)/2^60)-1;
-> -1.1102230246251565*10^-16
float((2^1000-1)/2^1000)-1;
-> -1.1102230246251565*10^-16
25.08.2012 15:43, David Billinghurst ?????:
> I see these too, and I should have mentioned them. I don't see them if I
> use gcl with gcc-4.5, but I can only built this version under XP - it
> doesn't compile under Windows 7. I haven't had the time to look into it
> more fully.
>
> On 25/08/2012 10:29 PM, Volker van Nek wrote:
>> Thank you very much for creating a Windows installer.
>>
>> I run the test suite on Vista in a VirtualBox.
>>
>> Maxima 5.28.0 http://maxima.sourceforge.net
>> using Lisp GNU Common Lisp (GCL) GCL 2.6.8 (a.k.a. GCL)
>>
>> Error summary:
>> Errors found in
>> C:/PROGRA~1/MAXIMA~3.0/share/maxima/5.28.0/tests/rtest16.mac, problems:
>> (196 197)
>> 2 tests failed out of 9,351 total tests.
>>
>> ********************** Problem 196 ***************
>> Input:
>> float((2^60-1)/2^60)-1
>> Result:
>> -1.1102230246251565E-16
>> This differed from the expected result:
>> 0.0
>> ********************** Problem 197 ***************
>> Input:
>> float((2^1000-1)/2^1000)-1
>> Result:
>> -1.1102230246251565E-16
>> This differed from the expected result:
>> 0.0
>>
>> GCL is from git I assume.
>>
>> In GCL 2.6.7 which I installed from debian sid to build Maxima on
>> Linux these problems are not present.
>>
>> Volker van Nek
>>
>> 2012/8/25 David Billinghurst <dbmaxima at gmail.com
>> <mailto:dbmaxima at gmail.com>>
>>
>> There is a windows installer at
>> http://billinghurst.customer.netspace.net.au/maxima-5.28.0.exe
>>
>> As with past windows binaries this is built with an ancient
>> mingw/msys and gcl/gcc-3.3.1. I now have the technology to build
>> with a newer mingw/gcc and/or with other lisps.
>>
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>>
>>
>
>
>
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