HP 3000 Manuals

HP Business BASIC/XL Reference Manual

FNEND 

The FNEND statement defines the end of a multi-line function.  A
multi-line function returns both control of the execution and a value via
a RETURN statement.  The FNEND statement serves as a marker for the last
statement in the function.  Therefore, an error occurs if the FNEND
statement actually executes.

Syntax 

{FNEND }
{FN END}

The FNEND statement is legal only in a multi-line function.  It is
illegal in the main program or a subprogram.

It is good programming practice to end a multi-line function with an
FNEND statement and use RETURN statements within the function.  However,
an FNEND statement can appear more than once in a multi-line function at
either the beginning of the next subunit or at the end of the containing
program.  The start of the next subunit in a program does indicate the
end of the multi-line function, but for program documentation purposes it
is a good idea to include the FNEND.

Example 

      10 READ A
      25 DATA 3
      20 C= FNMath(A)         !Calls the function.
      30 PRINT C
      99 END
     100 DEF FNMath(X)        !Start of the function.
     110 Y=X*2
     120 RETURN Y             !Return from the function.
     999 FNEND                !Indicates the end of the function.

MPE/iX 5.0 Documentation