Floating point tolerance

Numeric tolerance when comparing floating point values from Simulink output with the DPI component outputs running in the HDL simulator

Since R2025a

Model Configuration Pane: SystemVerilog DPI / Test Bench Generation

Description

Specify a numeric tolerance when comparing floating point values from Simulink^® output with the DPI component outputs running in the HDL simulator. Differences smaller than the specified tolerance value are considered equivalent.

Small differences can be caused when the HDL simulator is using different math libraries than the ones Simulink and MATLAB^® use.

Dependencies

To enable this parameter, you must select Generate test bench.

Settings

4.09e-16 (default)

Default: 4.409e-16.

Programmatic Use

Parameter: DPIFloatingPointTolerance

Type:

Values: 4.09e-16

Default:4.09e-16

Version History

Introduced in R2025a