Changes between Version 3 and Version 5 of Ticket #13134


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Timestamp:
06/20/12 06:45:26 (10 years ago)
Author:
jdemeyer
Comment:

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  • Ticket #13134

    • Property Summary changed from real_double logarithm test fails on Solaris to real_double logarithm test fails due to ulp() bug
  • Ticket #13134 – Description

    v3 v5  
    1 This is a doctest error on Solaris SPARC introduced by #12557:
     1This is a doctest error on Solaris SPARC and FreeBSD introduced by #12557:
    22{{{
    33sage -t  --long -force_lib devel/sage/sage/rings/real_double.pyx
     
    1212}}}
    1313
    14 It turns out that the bug is actually in the `ulp()` method which returns a value which is a factor 2 too small.  Since in all other systems except SPARC the RDF `log()` method is accurate up to 0.5 ulp, the tests for #12557 passed.
     14It turns out that the bug is actually in the `ulp()` method which returns a value which is a factor 2 too small.  Since in all other systems (except Solaris SPARC and FreeBSD) the RDF `log()` method is accurate up to 0.5 ulp, the tests for #12557 passed.