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wcsspn(3)
NAME
  wcsspn, wcscspn - Return the length of the initial segment of a wide-
  character string

SYNOPSIS
  #include <wchar.h>

  size_t wcsspn(
	  const wchar_t *wcstring1,
	  const wchar_t *wcstring2 );

  size_t wcscspn(
	  const wchar_t *wcstring1,
	  const wchar_t *wcstring2 );

LIBRARY
  Standard C Library (libc)

STANDARDS
  Interfaces documented on this reference page conform to industry standards
  as follows:

  wcscspn(), wcsspn(): ISO C, XPG4

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

PARAMETERS
  wcstring1
      Points to a wide-character string being checked for an initial segment.

  wcstring2
      Points to a wide-character string containing a set of wide characters
      that define the initial segment.

DESCRIPTION
  The wcsspn() and wcscspn() functions compute the number of wide characters
  in the initial segment of a wide-character string. The wcsspn() function
  considers the initial segment to consist of all wide characters that are
  included in the set of wide characters pointed to by the wcstring2
  parameter. The function counts these wide characters until it finds one
  that is not included in the set. The wcscspn() function considers the
  initial segment to consist of all wide characters that are not included in
  the set of wide characters pointed to by the wcstring2 parameter. The
  function counts these wide characters until it finds one that is included
  in the set.

RETURN VALUES
  On successful completion, the wcsspn() and wcscspn() functions return the
  number of wide characters in the segment.  No error return is defined for
  these functions.

SEE ALSO
  Functions: setlocale(3), strspn(3), wcslen(3)

  Standards: standards(5)

Index for Section 3

Alphabetical listing for W

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