[Bug math/5781] Slow sine function for special values on AMD64 - second attempt

[jakub at redhat dot com]

------- Additional Comments From jakub at redhat dot com  2008-02-21 09:39 -------
Most of the double routines in libm come from IBM accurate matematical library,
which ensures <= 0.5ulp error.  Trigonometric etc. functions are computed using
floating point computations, but if the possible error from that is too high, it 
uses slower multiprecision computation to guarantee ultimate precise result.
Guess you just picked some worst-case values.
i386 uses the non-precise hardware instructions instead, so doesn't guarantee
the <= 0.5ulp precision.



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           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


http://sourceware.org/bugzilla/show_bug.cgi?id=5781

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