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The If Generate Statement lists a series of behavioral statements that are activated after the positive evaluation of an arithmetic expression.

The following example shows an If Generate Statement:

IF DEVICE_FAMILY == "FLEX®6000" GENERATE
   c[] = 6kadder(a[], b[], cin);
ELSE GENERATE 
   c[] = otheradder(a[], b[], cin);
END GENERATE;

This example uses the predefined Altera® parameter DEVICE_FAMILY, which represents the target device family that you specified for the current design with the Device page of the Settings dialog box (Assignments menu).

The If Generate Statement has the following characteristics:

• The keywords IF and GENERATE enclose the arithmetic expression to be evaluated and are followed by one or more behavioral statements, each of which ends with a semicolon (;). These statements are activated if the expression is true.

• The keywords ELSE GENERATE are followed by one or more behavioral statements, each of which ends with a semicolon. These statements are activated if the arithmetic expression is false.

• The keywords END GENERATE and a semicolon (;) end the If Generate Statement.

• The If Generate Statement can be used in the Logic Section or in the Variable Section.

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