fmath.hpp provides a fast approximate exp(x) of float x. The function is is 2~6 times faster than std::expf() ofVC10 and 10~50 times faster than that of gcc 4.4 on Core2Duo. fmath.hpp is available on 32-bit/64-bit Visual Studio 2008/2010 and 32-bit/64-bit gcc 4.1 or later.
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fmath
