ISO specific standard procedures and functions

The standard function LENGTH is specific to ISO Modula-2 and is defined as:

(*
   IM - returns the imaginary component of a complex type.
        The return value will the same type as the imaginary field
        within the complex type.
*)

IM
PROCEDURE IM (c: <any complex type>) : <floating point type> ;

(*
   INT - returns an INTEGER value which has the same value as v.
         This function is equivalent to: VAL(INTEGER, v).
*)

INT
PROCEDURE INT (v: <any ordinal type>) : INTEGER ;

(*
   LENGTH - returns the length of string a.
*)

LENGTH
PROCEDURE LENGTH (a: ARRAY OF CHAR) : CARDINAL ;

This function is evaluated at compile time, providing that string a is a constant. If a cannot be evaluated then a call is made to M2RTS.Length.

(*
   ODD - returns a BOOLEAN indicating whether the whole number
         value, v, is odd.
*)

ODD
PROCEDURE ODD (v: <any whole number type>) : BOOLEAN ;

(*
   RE - returns the real component of a complex type.
        The return value will the same type as the real field
        within the complex type.
*)

RE
PROCEDURE RE (c: <any complex type>) : <floating point type> ;