NX Nastran DMAP Programmer's Guide - Kxcad.net

Parameters
For example, the following sequence is recommended for setting the TYPE
of ALPHA:
TYPE PARM,,CS,Y,ALPHA=(1.,1.) $
TYPE PARM,,CS,N,ALPHAX $
.
.
.
ALPHAX=ALPHA $
IF( FLAG ) ALPHAX=CMPLX(BETA,GAMMA) $
.
.
.
ADD A,B/C/ALPHAX $
and the following is not recommended:
IF( FLAG ) PARAMR //'COMPLEX'//BETA/GAMMA/S,Y,ALPHA $
.
.
.
ADD A,B/C/V,Y,ALPHA=(1.,1.) $
Expressions and Operators
An expression represents a single value and consists of one or more constant and/or
variable parameters separated by operators. Expressions are classified as arithmetic,
relational, logical, or character. Arithmetic expressions produce numerical values;
relational and logical expressions produce logical values. An expression can contain
intrinsic functions. An expression is specified:
• In the right hand side of an assignment (=) statement
• As arguments for intrinsic functions
• As logical expressions in control statements:
DO WHILE, IF, IF-THEN, ELSE IF-THEN
• As logical expressions in the WHERE clause of
DBVIEW, DBEQUIV, and DBDELETE statements.
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