Subversion Repositories openrisc_2011-10-31

/*

 * Copyright (c) 1990 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that the above copyright notice and this paragraph are

 * duplicated in all such forms and that any documentation,

 * advertising materials, and other materials related to such

 * distribution and use acknowledge that the software was developed

 * by the University of California, Berkeley.  The name of the

 * University may not be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

/*

FUNCTION

<<getw>>---read a word (int)

INDEX

        getw

ANSI_SYNOPSIS

        #include <stdio.h>

        int getw(FILE *<[fp]>);

TRAD_SYNOPSIS

        #include <stdio.h>

        int getw(<[fp]>)

        FILE *<[fp]>;

DESCRIPTION

<<getw>> is a function, defined in <<stdio.h>>.  You can use <<getw>>

to get the next word from the file or stream identified by <[fp]>.  As

a side effect, <<getw>> advances the file's current position

indicator.

RETURNS

The next word (read as an <<int>>), unless there is no more

data or the host system reports a read error; in either of these

situations, <<getw>> returns <<EOF>>.  Since <<EOF>> is a valid

<<int>>, you must use <<ferror>> or <<feof>> to distinguish these

situations.

PORTABILITY

<<getw>> is a remnant of K&R C; it is not part of any ISO C Standard.

<<fread>> should be used instead.  In fact, this implementation of

<<getw>> is based upon <<fread>>.

Supporting OS subroutines required: <<fread>>.  */

#if defined(LIBC_SCCS) && !defined(lint)

static char sccsid[] = "%W% (Berkeley) %G%";

#endif /* LIBC_SCCS and not lint */

#include <_ansi.h>

#include <stdio.h>

int

_DEFUN(getw, (fp),

       register FILE *fp)

{

  int result;

  if (fread ((char*)&result, sizeof (result), 1, fp) != 1)

    return EOF;

  return result;

}