Expression Return and Parameter Types

Return Types

• 0: (No flags) This flag (or rather lack of flags) tells MMF that your expression will return an integer.
• EXPFLAG_DOUBLE: This flag tells MMF that your expression will return a floating point number. Information on Returning Floats
• EXPFLAG_STRING: This flag tells MMF that your expression will return a string. Information on Returning Strings

Parameter Types

• EXPPARAM_LONG: This parameter type tells MMF to get a number (integer or floating point) from the user.
• EXPPARAM_STRING: This parameter type tells MMF to get a string from the user. To the expression routine, MMF passes a pointer to the string.

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