Fits a number to the -1 to 1 range.
Replaced by: hou.hmath
See also: fit, fit01, fit10
fit11(num, newmin, newmax)
Return a number between newmin and newmax that is relative to num in the range between -1 and 1. If the value is outside the -1 to 1 it will be clamped to the new range.
fit(.3,5,20)=14.75