ASSERT

Purpose

This procedure is a simple routine to check assumptions during
programming. If, at any time, an assertion fails to be true, the
program halts with an error message.

Calling Sequence

ASSERT, assertion [, msg]

Inputs

assertion: A boolean expression believed to be true
msg: An optional string to print when the assertion fails

Procedure

The procedure evaluates whether the assertion is true or false. If
true, the program exists quietly. If false, the program issues an
error message and exits

Modification History

April 2009- Written by Chris Beaumont
July 2011- Added msg input. cnb.