fgetws man page on Darwin

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FGETWS(3)		 BSD Library Functions Manual		     FGETWS(3)

NAME
     fgetws, fgetws_l — get a line of wide characters from a stream

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdio.h>
     #include <wchar.h>

     wchar_t *
     fgetws(wchar_t *restrict ws, int n, FILE *restrict stream);

     #include <stdio.h>
     #include <wchar.h>
     #include <xlocale.h>

     wchar_t *
     fgetws_l(wchar_t *restrict ws, int n, FILE *restrict stream,
	 locale_t loc);

DESCRIPTION
     The fgetws() function reads at most one less than the number of charac‐
     ters specified by n from the given stream and stores them in the wide
     character string ws.  Reading stops when a newline character is found, at
     end-of-file or error.  The newline, if any, is retained.  If any charac‐
     ters are read and there is no error, a ‘\0’ character is appended to end
     the string.

     While the fgetws() function uses the current locale, the fgetws_l() func‐
     tion may be passed a locale directly. See xlocale(3) for more informa‐
     tion.

RETURN VALUES
     Upon successful completion, fgetws() returns ws.  If end-of-file occurs
     before any characters are read, fgetws() returns NULL and the buffer con‐
     tents remain unchanged.  If an error occurs, fgetws() returns NULL and
     the buffer contents are indeterminate.  The fgetws() function does not
     distinguish between end-of-file and error; callers must use feof(3) and
     ferror(3) to determine which occurred.

ERRORS
     The fgetws() function will fail if:

     [EBADF]		The given stream argument is not a readable stream.

     [EILSEQ]		The data obtained from the input stream does not form
			a valid multibyte character.

     The function fgetws() may also fail and set errno for any of the errors
     specified for the routines fflush(3), fstat(2), read(2), or malloc(3).

SEE ALSO
     feof(3), ferror(3), fgets(3), xlocale(3)

STANDARDS
     The fgetws() function conforms to IEEE Std 1003.1-2001 (“POSIX.1”).

BSD				August 6, 2002				   BSD
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