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[Bug math/13629] clog() returns wrong values around z=1


http://sourceware.org/bugzilla/show_bug.cgi?id=13629

Tim Prince <tprince at computer dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |tprince at computer dot org

--- Comment #3 from Tim Prince <tprince at computer dot org> 2012-01-27 16:00:17 UTC ---
I ran the TOMS 714 test against glibc-2.12-1.7.el6.x86_64 and Intel libimf
(latter requires option -fp-model source).
This test doesn't exercise the neighborhood of (1, 0).
The only outright failure for glibc came with LOG(  0.1797693+309 
0.1797693+309).
Otherwise, the maximum errors in each tested region are similar for the two
libraries, but the number of unequal comparisons is about 10 times as many for
glibc.
Comparisons attached: 
dclog_gf.txt (gfortran/glibc)
dclog_if.txt (ifort/imf)

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