Floating-Point Model Without Fixed-Point Data

open_system("ex_if_block_floatingpoint.slx");

Block and Model Configurations

In this model, the If Action Subsystem blocks use their default configurations. The simulation parameters are set to their default values except for the parameters listed in this table.

The block parameters are set to their default values except for the parameters listed in this table.

For this model, when input u1 is greater than 0 or input u2 is greater than 0.5, the output is 4. Otherwise, the output is -4. The Scope block displays the output from the Merge block with inputs u1 and u2.

Model with If Action Subsystems and Fixed-Point Data Types

open_system("ex_if_block_fixedpoint.slx");

Model Analysis

The Repeating Sequence Stair blocks output fixed-point data types.

The Compare To Constant blocks implement two parts of the If expression that is used in the If block in the floating-point version of the model, (u1 > 0) and (u2 > 0.5). The OR operation, (u1|u2), can still be implemented inside the If block. For a fixed-point model, the expression must be partially implemented outside of the If block as it is in this model.

The block and simulation parameters for the fixed-point model are the same as for the floating-point model with these exceptions and additions.