Functions listed by SuSv3 but not (yet) included in uClibc

A. Craig West acraigwest at
Tue Jan 12 15:32:23 UTC 2010

I recently ran into a problem building ffmpeg on a uclibc system,
where ffmpeg appears to depend on the log2f function. A bit of
investigation led me to a section of code in libm/float_wrappers.c,
with #undef L_log2f, and the comment:
 /* For the time being, do _NOT_ implement these functions
 * that are defined by SuSv3 */

What is missing is any explanation of WHY these functions are left
unimplemented. There is the secondary issue of why ffmpeg requires
this function, but that isn't really pertinent to this list...
-A. Craig West

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