External Interfaces

Enumerated Types

For arguments defined as C enumerated types, you can pass either the enumeration string or its integer equivalent.

The readEnum function from the shrlibsample library returns the enumeration string that matches the argument passed in. Here is the Enum1 definition and the readEnum function in C:

• enum Enum1 {en1 = 1, en2, en4 = 4} TEnum1;
  
  char* readEnum(TEnum1 val) {
     switch (val) {
     case 1 :return "You chose en1";
     case 2: return "You chose en2";
     case 4: return "You chose en4";
     default : return "enum not defined";
     }
  }
  

In MATLAB, you can express an enumerated type as either the enumeration string or its equivalent numeric value. The TEnum1 definition above declares enumeration en4 to be equal to 4. Call readEnum first with a string:

• calllib('shrlibsample', 'readEnum', 'en4')
  ans =
     You chose en4
  

Now call it with the equivalent numeric argument, 4:

• calllib('shrlibsample', 'readEnum', 4)
  ans =
     You chose en4
  

Primitive Types

Structures

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