Built-In Functions

Over 50 functions are built into the language processor. The built-in functions fall into the following categories:

Arithmetic functions
These functions evaluate numbers from the argument and return a particular value.
Comparison functions
These functions compare numbers and/or strings and return a value.
Conversion functions
These functions convert one type of data representation to another type of data representation.
Formatting functions
These functions manipulate the characters and spacing in strings supplied in the argument.
String manipulating functions
These functions analyze a string supplied in the argument (or a variable representing a string) and return a particular value.
Miscellaneous functions
These functions do not clearly fit into any of the other categories.

The following tables briefly describe the functions in each category. For a complete description of these functions, see z/OS TSO/E REXX Reference.