Constants

OVM also supports the concept of a constant. Constants are similar to variables except that the constant’s value is assigned once, and only once by the OVM compiler at compile time. Constants can be used in places where a literal of the same type would otherwise have been required. The type of the constant can be integer, boolean, or string and the initialising value is checked by the OVM compiler. Well named constants can make scripts easier to read because the constant name explains the purpose of the value of it holds.

The syntax for defining a constant and its value is
@constant type constantname = constant expression
For example.
@constant integer fred = 10            ! define integer constant fred
@constant boolean mary = true          ! define boolean constant mary
@constant string  jane = "Hello"       ! define string  constant jane

@comment(fred," ",mary," ",jane)       ! display the values of the constants
Multiple constants of the same type may be defined on a single line.
@constant integer t1 = 100, t2 = 200   ! define two integer constants
Constants may be used to initialise other constants and the dimensions of arrays.
@constant integer t3 = t1 + t2         ! t3 will have the value 300

@integer  myarray[t3]                  ! define an array of 300 elements 

Literals

Contents

Variables

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