[PATCH] c99 math func log2

[H.Heinold]

Hi,

I actual found a program that is using log2, so I would be glad
if this function would be integrated. The program is inside qt-embedded-4.4.1
and compiling is failing with this line: 

qpf2.cpp:(.text+0x26d8): undefined reference to `log2'

I have attached a patch which should working against latest svn head.

If the patch is okay I will open a bug report too.

-- 


Bye Henning
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