Added Perspective.
Better comments.
Added SmallestNormal constants.
Added NearlyEqual (source: http://floating-point-gui.de/ ).
Fixed copy/paste bug.
Fixed copy/paste bug.
Use NearlyEqual in unit tests for Tan.
Added float <-> binary conversions.
Added Abs.
go fmt
Use Abs.
Added Inf, IsInf, NaN, IsNan and Normalize.