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_ismbc routines

  • Άρθρο

Each _ismbc routine tests a given multibyte character c for a particular condition.

Remarks

The test result of each _ismbc routine depends on the multibyte code page in effect. Multibyte code pages have single-byte alphabetic characters. By default, the multibyte code page is set to the system-default ANSI code page obtained from the operating system at program startup. You can query or change the multibyte code page in use with _getmbcp or _setmbcp, respectively.

The output value is affected by the LC_CTYPE category setting of the locale. For more information, see setlocale. The versions of these functions without the _l suffix use the current locale for this locale-dependent behavior; the versions with the _l suffix are identical except that they use the locale parameter passed in instead.

Routine Test condition Code page 932 example
_ismbcalnum, _ismbcalnum_l Alphanumeric Returns nonzero if and only if c is a single-byte representation of an ASCII English letter: See examples for _ismbcdigit and _ismbcalpha.
_ismbcalpha, _ismbcalpha_l Alphabetic Returns nonzero if and only if c is a single-byte representation of an ASCII English letter: See examples for _ismbcupper and _ismbclower; or a katakana letter: 0xA6<=c<=0xDF.
_ismbcdigit, _ismbcdigit_l Digit Returns nonzero if and only if c is a single-byte representation of an ASCII digit: 0x30<=c<=0x39.
_ismbcgraph, _ismbcgraph_l Graphic Returns nonzero if and only if c is a single-byte representation of any ASCII or katakana printable character except a white space ( ). See examples for _ismbcdigit, _ismbcalpha, and _ismbcpunct.
_ismbclegal, _ismbclegal_l Valid multibyte character Returns nonzero if and only if the first byte of c is within ranges 0x81 - 0x9F or 0xE0 - 0xFC, while the second byte is within ranges 0x40 - 0x7E or 0x80 - FC.
_ismbclower, _ismbclower_l Lowercase alphabetic Returns nonzero if and only if c is a single-byte representation of an ASCII lowercase English letter: 0x61<=c<=0x7A.
_ismbcprint, _ismbcprint_l Printable Returns nonzero if and only if c is a single-byte representation of any ASCII or katakana printable character including a white space ( ): See examples for _ismbcspace, _ismbcdigit, _ismbcalpha, and _ismbcpunct.
_ismbcpunct, _ismbcpunct_l Punctuation Returns nonzero if and only if c is a single-byte representation of any ASCII or katakana punctuation character.
_ismbcblank, _ismbcblank_l Space or horizontal tab Returns nonzero if and only if c is a single-byte representation of a space character or a horizontal tab character: c=0x20 or c=0x09.
_ismbcspace, _ismbcspace_l Whitespace Returns nonzero if and only if c is a white space character: c=0x20 or 0x09<=c<=0x0D.
_ismbcsymbol, _ismbcsymbol_l Multibyte symbol Returns nonzero if and only if 0x8141<=c<=0x81AC.
_ismbcupper, _ismbcupper_l Uppercase alphabetic Returns nonzero if and only if c is a single-byte representation of an ASCII uppercase English letter: 0x41<=c<=0x5A.

Code Page 932 Specific

The following routines are specific to code page 932.

Routine Test condition (code page 932 only)
_ismbchira, _ismbchira_l Double-byte Hiragana: 0x829F<=c<=0x82F1.
_ismbckata, _ismbckata_l Double-byte katakana: 0x8340<=c<=0x8396.
_ismbcl0, _ismbcl0_l JIS non-Kanji: 0x8140<=c<=0x889E.
_ismbcl1, _ismbcl1_l JIS level-1: 0x889F<=c<=0x9872.
_ismbcl2, _ismbcl2_l JIS level-2: 0x989F<=c<=0xEA9E.

_ismbcl0, _ismbcl1, and _ismbcl2 check that the specified value c matches the test conditions described in the preceding table, but don't check that c is a valid multibyte character. If the lower byte is in the ranges 0x00 - 0x3F, 0x7F, or 0xFD - 0xFF, these functions return a nonzero value, indicating that the character satisfies the test condition. Use _ismbbtrail, _ismbbtrail_l to test whether the multibyte character is defined.

END Code Page 932 Specific

See also

Character classification
is, isw routines
_ismbb routines