newlib/libc/stdio/putw.c

   1 /*
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that the above copyright notice and this paragraph are
   7  * duplicated in all such forms and that any documentation,
   8  * and/or other materials related to such
   9  * distribution and use acknowledge that the software was developed
  10  * by the University of California, Berkeley.  The name of the
  11  * University may not be used to endorse or promote products derived
  12  * from this software without specific prior written permission.
  13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16  */
  17
  18 /*
  19 FUNCTION
  20 <<putw>>---write a word (int)
  21
  22 INDEX
  23         putw
  24
  25 SYNOPSIS
  26         #include <stdio.h>
  27         int putw(int <[w]>, FILE *<[fp]>);
  28
  29 DESCRIPTION
  30 <<putw>> is a function, defined in <<stdio.h>>.  You can use <<putw>>
  31 to write a word to the file or stream identified by <[fp]>.  As a side
  32 effect, <<putw>> advances the file's current position indicator.
  33
  34 RETURNS
  35 Zero on success, <<EOF>> on failure.
  36
  37 PORTABILITY
  38 <<putw>> is a remnant of K&R C; it is not part of any ISO C Standard.
  39 <<fwrite>> should be used instead.  In fact, this implementation of
  40 <<putw>> is based upon <<fwrite>>.
  41
  42 Supporting OS subroutines required: <<fwrite>>.
  43 */
  44
  45 #if defined(LIBC_SCCS) && !defined(lint)
  46 static char sccsid[] = "%W% (Berkeley) %G%";
  47 #endif /* LIBC_SCCS and not lint */
  48
  49 #include <stdio.h>
  50
  51 int
  52 putw (int w,
  53        register FILE *fp)
  54 {
  55   if (fwrite ((const char*)&w, sizeof (w), 1, fp) != 1)
  56     return EOF;
  57   return 0;
  58 }