[Ecls-list] Another question

Paul Bowyer pbowyer at olynet.com
Sun Dec 18 21:37:58 UTC 2011

On 12/18/2011 12:12 PM, Juan Jose Garcia-Ripoll wrote:
> On Sun, Dec 18, 2011 at 8:52 PM, Paul Bowyer <pbowyer at olynet.com 
> <mailto:pbowyer at olynet.com>> wrote:
>     I've just gotten a test copy of the 64-bit version of PCLinuxOS
>     running on another computer and as part of checking it out, I
>      have tried to set up ECL on it. Everything seems to have gone
>     correctly and ECL installed apparently without problems, but when
>     I ran the tests, I experienced more failures in the ansi.log file
>     for the 64-bit install than I get with the 32-bit install that I
>     have been using.
> Some of the ANSI tests are not very "correct" I would say. The tests 
> check on the accuracy of certain functions, but what is accurate is 
> something to be discussed. The differences between 32- and 64-bit 
> platforms, or between operating systems in the same machine, are due 
> to how the C library computes those mathematical functions. Some of 
> them have enough accuracy for long-double types, some don't. Some work 
> internally with double-float precision and have more accuracy than 
> what the test suite expects. Some signal overflows, some don't. etc, etc.
> The other two tests
> MISC.528
> MISC.529
> are also probably due to the fact that the code uses internally double 
> types for the products, exceeding the precision of the interpreted 
> code. I also see them in my computer.
> Unless the
> Juanjo
> -- 
> Instituto de Física Fundamental, CSIC
> c/ Serrano, 113b, Madrid 28006 (Spain)
> http://juanjose.garciaripoll.googlepages.com


Thanks for easing my doubts. I assume the unfinished "Unless the" was 
meant to convey that there is no reason to assume there are problems in 
the 64-bit install that I need to worry about.


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