_mbsnbicmp, _mbsnbicmp_l

發行項
07/24/2011

Compares n bytes of two multibyte-character strings, ignoring case.

int _mbsnbicmp(
   const unsigned char *string1,
   const unsigned char *string2,
   size_t count 
);

Parameters

string1, string2
Null-terminated strings to compare.
count
Number of bytes to compare.

Return Value

The return value indicates the relationship between the substrings.

Return value	Description
< 0	string1 substring less than string2 substring.
0	string1 substring identical to string2 substring.
> 0	string1 substring greater than string2 substring.

On an error, _mbsnbcmp returns _NLSCMPERROR, which is defined in String.h and Mbstring.h.

Remarks

The _mbsnbicmp function lexicographically compares, at most, the first count bytes of string1 and string2. The comparison is performed without regard to case; _mbsnbcmp is a case-sensitive version of _mbsnbicmp. The comparison ends if a terminating null character is reached in either string before count characters are compared. If the strings are equal when a terminating null character is reached in either string before count characters are compared, the shorter string is lesser.

_mbsnbicmp is similar to _mbsnicmp, except that it compares strings by bytes instead of by characters.

Two strings containing characters located between 'Z' and 'a' in the ASCII table ('[', '\', ']', '^', '_', and '`') compare differently, depending on their case. For example, the two strings "ABCDE" and "ABCD^" compare one way if the comparison is lowercase ("abcde" > "abcd^") and the other way ("ABCDE" < "ABCD^") if it is uppercase.

_mbsnbicmp recognizes multibyte-character sequences according to the multibyte code page currently in use. It is not affected by the current locale setting.

If either string1 or string2 is a null pointer, _mbsnbicmp invokes the invalid parameter handler as described in Parameter Validation. If execution is allowed to continue, the function returns _NLSCMPERROR and sets errno to EINVAL.

Generic-Text Routine Mappings

Tchar.h routine	_UNICODE and _MBCS not defined	_MBCS defined	_UNICODE defined
_tcsnicmp	_strnicmp	_mbsnbicmp	_wcsnicmp
_tcsnicmp_l	_strnicmp_l	_mbsnbicmp_l	_wcsnicmp_l

Requirements

Routine	Required header
_mbsnbicmp	<mbstring.h>

For more compatibility information, see Compatibility in the Introduction.

Example

See the example for _mbsnbcmp, _mbsnbcmp_l.

.NET Framework Equivalent

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

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