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Functions

Here is a simple example of how to define a new function:

Q1> :(Factorial :x) = if x=0 => 1 || x * (Factorial x-1)

This is the classical factorial function. Here is how to call it:

Q2> Factorial 30
265252859812191058636308480000000

Prefix and postfix functions:
Function definition syntax:
Parameter lists:
Tuples: Variable-length parameter lists
Keyword tuples: (NOT IMPLEMENTED)
Macros: Functions that create new expressions at compile time.
C interface: How to call (and be called by) functions written in C.