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-4047 Mixed informal and formal function declaration syntax.

Return type is ignored.

A function declaration has blended informal (FUNCTION program block) and formal (FUNCTION prototype) syntax. The parenthesized list of arguments gave only names, with the types to be defined later in a VARIABLE statement, but the declaration then continued with a RETURNING clause, available only in the FUNCTION prototype style of declaration. Consult the IBM Informix 4GL Reference Manual.