Settings

Use this setting to specify the tolerance strategy for checking the numerical accuracy in the generated test bench. Based on the tolerance strategy that you specify, you can enter a custom tolerance value.

'relative' (default)

When you verify the generated code, HDL Coder™ checks for the floating-point tolerance based on the relative error.

'ulp'

When you verify the generated code, HDL Coder checks for the floating-point tolerance based on the ULP error.

Set or View This Property

To set this property, use hdlset_param or makehdl. To view the property value, use hdlget_param.

Example

To specify the floating-point tolerance value for a model, use the hdlset_param function to specify the tolerance strategy, and then enter the tolerance value. For example, to check the floating-point tolerance based on ULP error and enter the tolerance value:

% check for floating-point tolerance based on the ULP error
hdlset_param('sfir_single', 'FPToleranceStrategy', 'ULP');   

% When using ULP error, optionally enter tolerance value greater than or equal to 0        
hdlset_param('FP_test_16a', 'FPToleranceValue', 1);

See Also