Instances of de.grogra.xl.lang.FloatToFloat represent functions which take floats as input and return values of type float. Such instances cant be created by:

• lambda expressions of the XL programming language, e.g.,

  FloatToFloat f = float x => float

• some expression containing x

• FloatToFloat[float] compute the FloatToFloat function on the float argument.

The package de.grogra.math contains many predefined FloatToFloat objects, and is imported by default in RGG files. Thus, it is possible to write:

new Abs()[-5]; // return 5
//or define the object once and use it several times:
static Abs ABS = new Abs();
ABS[-5];
ABS[42]; // ...