The type of the function is numeric.

## General Format

## Arguments

- Argument-1 must be of the class numeric.

## Returned Values

- The returned value is:
(argument-1 - FUNCTION INTEGER-PART (argument-1))

where the argument for the INTEGER-PART function is the same as for the FRACTION-PART function itself.

Note: If the value of argument-1 is +1.5, +0.5 is returned. If the value of argument-1 is -1.5, -0.5 is returned.