CTYPEDEFINE Define C Type

Section: FreeMat External Interface

Usage

The ctypedefine function allows you to define C types for use with FreeMat. Three variants of C types can be used. You can use structures, enumerations, and aliases (typedefs). All three are defined through a single function ctypedefine. The general syntax for its use is
  ctypedefine(typeclass,typename,...)

where typeclass is the variant of the type (legal values are 'struct', 'alias', 'enum'). The second argument is the name of the C type. The remaining arguments depend on what the class of the typedef is. To define a C structure, use the 'struct' type class. The usage in this case is:

  ctypedefine('struct',typename,field1,type1,field2,type2,...)

The argument typename must be a valid identifier string. Each of of the field arguments is also a valid identifier string that describe in order, the elements of the C structure. The type arguments are typespecs. They can be of three types:

To define a C enumeration, use the 'enum' type class. The usage in this case is: ctypedefine('enum',typename,name1,value1,name2,value2,...) @] The argument typename must be a valid identifier string. Each of the name arguments must also be valid identifier strings that describe the possible values that the enumeration can take an, and their corresponding integer values. Note that the names should be unique. The behavior of the various cenum functions is undefined if the names are not unique. To define a C alias (or typedef), use the following form of ctypedefine:
  ctypedefine('alias',typename,aliased_typename)

where aliased_typename is the type that is being aliased to.