deriveMinMax

R2026b

Derive range information for model

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Syntax

deriveMinMax(converter)

Description

deriveMinMax(converter) derives the minimum and maximum values for each block in the system under design specified by the DataTypeWorkflow.Converter object based on design minimum and maximum values.

example

Examples

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Suppose you have the ex_derived_min_max_1 model from the Derive Ranges Using Design Ranges example. The block diagram displays the design minimum and maximum values specified for each block in the model:

  • In1 design range is [-50..100].

  • In2 design range is [-50..35].

  • Add block design range is [-125..55].

ex_derived_min_max_1 model with design minimum and maximum values displayed.

Create a DataTypeWorkflow.Converter object for this model.

model = 'ex_derived_min_max_1';
converter = DataTypeWorkflow.Converter(model);

Use the deriveMinMax function to perform derived range analysis on this converter object.

deriveMinMax(converter)

The DerivedMin and DerivedMax properties of the DataTypeWorkflow.Result object contain the calculated derived minimum and maximum values for each block in this model.

result = results(converter,'Run 1')
result = 

  1×4 Result array with properties:

    ResultName
    SpecifiedDataType
    CompiledDataType
    ProposedDataType
    Wraps
    Saturations
    WholeNumber
    SimMin
    SimMax
    DerivedMin
    DerivedMax
    RunName
    Comments
    DesignMin
    DesignMax

Display the derived minimum and maximum range values collected for each block in this model.

name = arrayfun(@(r) r.ResultName,result,'UniformOutput',false).';
minVal = arrayfun(@(r) r.DesignMin,result,'UniformOutput',false).';
maxVal = arrayfun(@(r) r.DesignMax,result,'UniformOutput',false).';
T = table(name,minVal,maxVal,'VariableNames',{'Block','DesignMin','DesignMax'});
disp(T)
                    Block                     DesignMin       DesignMax  
    _____________________________________    ____________    ____________

    {'ex_derived_min_max_1/In1'         }    {[     -50]}    {[     100]}
    {'ex_derived_min_max_1/In2'         }    {[     -50]}    {[      35]}
    {'ex_derived_min_max_1/Add : Output'}    {[    -125]}    {[      55]}
    {'ex_derived_min_max_1/Out1'        }    {0×0 double}    {0×0 double}

You can compare these results to the values returned by the Fixed-Point Tool for the same model in the Derive Ranges Using Design Ranges example.

Input Arguments

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Converter object for the system under design, specified as a DataTypeWorkflow.Converter object.

Example: converter = DataTypeWorkflow.Converter(model);

Tips

If you encounter any issues during the derivation, you can query them using the proposalIssues object function.

Alternatives

The deriveMinMax function is equivalent to the Collect Ranges button in the Fixed-Point Tool when the Range Collection Mode is set to Derived ranges.

Version History

Introduced in R2014b

See Also

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