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_ismbcalnum, _ismbcalnum_l, _ismbcalpha, _ismbcalpha_, _ismbcdigit, _ismbcdigit_l

Checks whether a multibyte character is an alphanumeric, alpha, or digit character.

int _ismbcalnum
(
   unsigned int c 
);
int _ismbcalnum_l
(
   unsigned int c,
   _locale_t locale
);
int _ismbcalpha
(
   unsigned int c 
);
int _ismbcalpha_l
(
   unsigned int c,
   _locale_t locale
);
int _ismbcdigit
(
   unsigned int c 
);
int _ismbcdigit_l
(
   unsigned int c,
   _locale_t locale
);

c

Character to be tested.

locale

Locale to use.

Each of these routines returns a nonzero value if the character satisfies the test condition or 0 if it does not. If c<= 255 and there is a corresponding _ismbb routine (for example, _ismbcalnum corresponds to _ismbbalnum), the result is the return value of the corresponding _ismbb routine.

Each of these routines tests a given multibyte character for a given condition.

The versions of these functions with the _l suffix are identical except that they use the locale passed in instead of the current locale for their locale-dependent behavior. For more information, see Locale.

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: 0x41<=c<=0x5A or 0x61<=c<=0x7A; or a katakana letter: 0xA6<=c<=0xDF.

_ismbcdigit,_ismbcdigit

Digit

Returns nonzero if and only if c is a single-byte representation of an ASCII digit: 0x30<=c<=0x39.

Routine

Required header

_ismbcalnum,_ismbcalnum_l

<mbstring.h>

_ismbcalpha,_ismbcalpha_l

<mbstring.h>

_ismbcdigit,_ismbcdigit_l

<mbstring.h>

For more compatibility information, see Compatibility in the Introduction.

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