Index for Section 3

Alphabetical listing for W

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wcwidth(3)
NAME
  wcwidth - Determine the display width of wide characters

SYNOPSIS
  #include <wchar.h>

  int wcwidth(
	  wchar_t wc );

LIBRARY
  Standard C Library (libc)

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

  wcwidth(): XSH5.0

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

PARAMETERS
  wc  Specifies a wide character.

DESCRIPTION
  The wcwidth() function determines the number of display columns to be
  occupied by the wide character specified by the wc parameter. The behavior
  of the wcwidth() function is determined by the LC_CTYPE category.

RETURN VALUES
  The wcwidth() function returns the number of display columns to be occupied
  by the wc parameter. If the wc parameter is a null wide character, a value
  of 0 (zero) is returned. If the wc parameter contains an invalid wide
  character code, a value of -1 is returned.

EXAMPLES
  The following example finds the display width of a wide character:

       #include <string.h>
       #include <locale.h>

       main()
       {

	       wchar_t wc;
	       int  retval;
	       (void)setlocale(LC_ALL, " ");
	       /* Let wc be the wide character whose
	       ** display width is to be found.
	       */
	       retval= wcwidth( wc );
	       if(retval == -1){
		       /*
		       ** Error handling. Invalid wide character in wc.
		       */
	 }
       }

SEE ALSO
  Functions: mblen(3), wcslen(3), wcswidth(3)

  Standards: standards(5)

Index for Section 3

Alphabetical listing for W

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