User guide

D-3

Compiler Directives and System Tasks

Compiler Directives for Setting Defaults

`default_nettype

Sets default net type for implicit nets. See IEEE Std 1364-2001

page 350. Syntax:

‘default_nettype wire | tri | tri0 | wand | triand

`resetall

Resets all compiler directives. See IEEE 1364-2001 page 357.

Syntax:

‘resetall

Compiler Directives for Macros

`define

Defines a text macro. See IEEE Std 1364-2001 page 351. Syntax:

‘define text_macro_name macro_text

`else

Used with `ifdef. Specifies an alternative group of source code

lines that VCS compiles if the text macro specified with an ‘ifdef

compiler directive is not defined. See IEEE Std 1364-2001 page

353. Syntax:

‘else second_group_of_lines

‘elseif

Used with `ifdef. Specifies an alternative group of source code

lines that VCS compiles if the text macro specified with an ‘ifdef

compiler directive is not defined but the text macro specified with

this compiler directive is defined. See IEEE Std 1364-2001 page

353.Syntax:

‘elseif text_macro_name second_group_of_lines