Which function can I use to get the information of simulink.AliasType/NumericType in M file?

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博学黄 2022-9-3

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回答： Andy Bartlett 2024-4-15，15:40

such as for Enum class, we can use getEnumTypeInfo to get the information of Enum, i would like to know the simaliar function for Alias type and NumericType

thx

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Answer 1

Andy Bartlett 2024-4-15，15:40

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First you need to have access to the Alias Type as a variable.

If you only have the name of the alias type used by a model, then you can get a copy of the variable using slResolve

aliasTypeVariable = slResolve( aliasTypeNameString, modelNameOrHandle )

Once you have the variable, you can use fixed.extractNumericType to get the type attributes.

For example,

myAliasType1 = Simulink.AliasType;
myAliasType1.BaseType = 'fixdt(1,16,3)';
nt1 = fixed.extractNumericType( myAliasType1.BaseType)
nt1 =


          DataTypeMode: Fixed-point: binary point scaling
            Signedness: Signed
            WordLength: 16
        FractionLength: 3
myAliasType2 = Simulink.AliasType;
myAliasType2.BaseType = 'single';
nt2 = fixed.extractNumericType( myAliasType2.BaseType)
nt2 =


          DataTypeMode: Single

FYI: You can also use fixed.extractNumericType to get the numerictype info from other things such as numeric variable or a type name.

myNumericVar = single(pi);
nt3 = fixed.extractNumericType(myNumericVar)
nt3 =


          DataTypeMode: Single
nt4 = fixed.extractNumericType('ufix16_En13')
nt4 =


          DataTypeMode: Fixed-point: binary point scaling
            Signedness: Unsigned
            WordLength: 16
        FractionLength: 13