FastAcos 

FastAsin 

FastAtan 

FastErfInverse 
Approximates the inverse of erf(x) , valid on the interval
[0.9999779095,0.9999779095], with a maximum error of about 6e5 .

FastExp 

FastExp2 

FastFunc 
A function that precomputes its values for speed.

FastFuncUnboundedDomain 
Provides table lookup capability for functions of bounded
range but unbounded domain.

FastGaussian 
An approximation to a univariate gaussian pdf of mean zero, deviation 1.

FastLog 
Provides about 12 digits of accuracy at a fraction of the
cost of Math.log().

FastLog10 

FastSigmoid 

FastSin 

FastUnscaledGaussian 

PolynomialApprox 
This class contains polynomial approximations to Trigonometric functions, which are much faster
than the Java builtin routines, but not as accurate.

QuickAtan 
Faster but less accurate than Math.atan.

QuickExp 
A faster version of Math.exp with maximum relative error of 1e5.

QuickExp2 
Similar to QuickExp but uses 2 smaller lookup tables instead of one large one.

QuickExp3 
Similar to QuickExp but uses 3 smaller lookup tables instead of one large one.
