HP 3000 Manuals

System Debug Reference Manual

Expressions 

Expressions are formulas for computing new values from a collection of
operators and their operands.  Operator precedence, in combination with
the use of parentheses, determines the order of expression evaluation.
When two or more operators of the same precedence occur at the same level
of evaluation, they are evaluated from left to right.

Expression operands may be literals, variables, functions, macros, and
symbolic procedure names, each of which denotes a value of some type.

Examples of valid expressions are:

   $12                          Simple numeric literal

   pc + 4                       Predefined variable

   FOPEN + 12                   Symbolic procedure name

   [dst 2.104]                  Indirection - contents of DST 2.104

   (count < 5) and (q>200)      Boolean expression with relational
                                operators

   strup('hello') + "MOM"       Standard function result

MPE/iX 5.0 Documentation