Converting double-byte character set (DBCS) data

The Language Environment® service routines IGZCA2D and IGZCD2A were intended for converting alphanumeric data items that contain DBCS data to and from pure DBCS data items in order to reliably perform operations such as STRING, UNSTRING, and reference modification.

These service routines continue to be provided for compatibility; however, using national data items and the national conversion operations is now recommended instead for this purpose.

The service routines do not support a code-page argument and are not sensitive to the code page specified by the CODEPAGE compiler option. The DBCS compiler option does not affect their operation.