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wcsspn

Defined in header <wchar.h> 
size_t wcsspn( const wchar_t* dest, const wchar_t* src );
 (since C95)

Returns the length of the maximum initial segment of the wide string pointed to by dest, that consists of only the characters found in wide string pointed to by src.

Parameters

dest - pointer to the null-terminated wide string to be analyzed
src - pointer to the null-terminated wide string that contains the characters to search for

Return value

The length of the maximum initial segment that contains only characters from wide string pointed to by src.

Example

References

  • C11 standard (ISO/IEC 9899:2011):
    • 7.29.4.5.5 The wcsspn function (p: 436)
  • C99 standard (ISO/IEC 9899:1999):
    • 7.24.4.5.5 The wcsspn function (p: 382)

See also

(C95)
 returns the length of the maximum initial segment that consists
of only the wide chars not found in another wide string
(function)
(C95)
 finds the first location of any wide character in one wide string, in another wide string
(function)

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