Specifications

Chapter 14. Statement Reference
216
• If you specify a global variable in
realparameter when calling a user-defined
function, the user-defined function cannot update the value of the global variable.
This is because all
realparameters are passed not by address but by value.
(So called "Call-by-value")
Syntax errors:
■ When programming a user-defined function
NOTE
Before any call to a FUNCTION...END FUNCTION, you need to place def-
inition of the FUNCTION function or declaration of the FUNCTION by the
DECLARE statement in your source program.
Error code and message Meaning
error 64: Function
redefinition
You made double definition to a same
function name.
error 71: Syntax error • funcname is an integer function
name, but
generalexpression
is a real type. (If funcname is a
real function name and
general-
expression
is an integer type,
then no error occurs.)
• stringlength is out of the
range.
• stringlength is not an integer
constant.
• The function name is assigned a
value outside the function definition
block.
error 95: Incorrect use
of FUNCTION,
EXIT FUNC-
TION, or END
FUNCTION
• The EXIT FUNCTION statement is
specified outside the function defini-
tion block.
• The
END FUNCTION statement is
specified outside the function defini-
tion block.