The class tests available for DBCS items are IS [NOT] DBCS, IS [NOT] KANJI, and IS [NOT] JAPANESE.
- IS [NOT] DBCS
- When CHARSET"EBCDIC" is in effect, the IS DBCS test returns true when each character in the string is deemed to be a valid DBCS character. A valid character has its first byte in the range 0x41 through 0xFE, and the second byte in the range 0x41 through 0xFE, or the character is an EBCDIC space (0x4040).
- When CHARSET"ASCII" is in effect, the DBCS test uses an OS call to determine if the string contains only valid double-byte character, and returns true if valid.
- IS [NOT] KANJI
- When CHARSET"EBCDIC" is in effect, the IS KANJI test returns true when each character in the string is deemed to be a valid Kanji character. A valid character has its first byte in the range 0x41 through 0x7F, and the second byte in the range 0x41 through 0xFE, or the character is an EBCDIC space (0x4040).
- When CHARSET"ASCII" is in effect, the IS KANJI test uses an OS call to determine if the string contains only valid Kanji character, and returns true if valid.
- IS [NOT] JAPANESE
- When CHARSET"EBCDIC" is in effect, the IS JAPANESE test is not supported, and will generate a
COBCH1806 Feature not supported in selected charset message on compilation.
- When CHARSET"ASCII" is in effect, the IS JAPANESE test returns true when the string contains only double-byte Japanese characters or single-byte Japanese Katakana characters, and returns true if valid.
When NSYMBOL"NATIONAL" is in effect, these class tests are not supported, and will generate a
COBCH0303 Operand has wrong data-type message on compilation.
