Message        The complex data type is a new feature in the C99
                standard.  Other C compilers may not support this
                extension.

 Description    This is a new language feature in the C99 revision of
                the standard.  While having a standard specification
                for portability, the feature may not yet be available
                in all of the compilers you use.

 User Action    Determine whether or not the use of this feature will
                cause portability problems for this code.