NX Nastran DMAP Programmer's Guide - Kxcad.net

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Instructions
or ALPHA:
ADD A , B / C / ALPHA $
If a parameter is to be used as both input and output, or output only, then a variable
name must be specified and preceded by S, N,. For example, on the PARAML module,
the fourth parameter, TERM, is an output parameter:
PARAML A // 'DMI' / 4 / 7 / S, N, TERM $
TERM is the value of matrix A at column 4 and row 7, which will be returned by the
PARAM module for later use in the DMAP program. If the S,N prefix is omitted, then
TERM is assumed to be input only, no fatal message is issued, and the TERM value is
incorrect.
Statements
A statement is any instruction that is not a module and that typically does not produce
output data blocks from input data blocks or parameters. Another distinction is that a
statement has no definition in the MPL (Module Property List). The different types of
statements are:
Assignment (=)
Function
Control
Declarative
Data Base Function
Assignment Statement
The assignment statement evaluates an expression and assigns the resulting value to
a variable parameter. This statement has the following form:
v = e $
where v is a variable parameter name, and e is an expression. The dollar sign [$] is
required to terminate the statement. Assignment statements are arithmetic, logical, or
character, depending on the type of the variable parameter. The type of the variable
and the expression must be the same. In other words, no mixed mode specification is
allowed.