in routine of fast inverse square. which is disabled by default requires its return function to instead of return y, be return 1/y. this is already slower than the default version and it is disabled by default.
added 1/y for inverse square. this method will be replaced with one that makes more sense for the range of numbers. btw this feature was not used by default
in routine of fast inverse square. which is disabled by default requires its return function to instead of return y, be return 1/y. this is already slower than the default version and it is disabled by default.