CENUM CENUM Lookup Enumerated C Type

Usage

The cenum function allows you to use the textual strings of C 
enumerated types (that have been defined using ctypedefine) in
your FreeMat scripts isntead of the hardcoded numerical values.  The
general syntax for its use is

  enum_int = cenum(enum_type,enum_string)

which looks up the integer value of the enumerated type based on the
string.  You can also supply an integer argument, in which case
cenum will find the matching string

  enum_string = cenum(enum_type,enum_int)

