69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/*
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FUNCTION
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<<getw>>---read a word (int)
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INDEX
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getw
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ANSI_SYNOPSIS
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#include <stdio.h>
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int getw(FILE *<[fp]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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int getw(<[fp]>)
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FILE *<[fp]>;
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DESCRIPTION
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<<getw>> is a function, defined in <<stdio.h>>. You can use <<getw>>
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to get the next word from the file or stream identified by <[fp]>. As
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a side effect, <<getw>> advances the file's current position
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indicator.
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RETURNS The next word (read as an <<int>>), unless there is no more
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data, or the host system reports a read error; in either of these
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situations, <<getw>> returns <<EOF>>. Since <<EOF>> is a valid
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<<int>>, you must use <<ferror>> or <<feof>> to distinguish these
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situations.
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PORTABILITY
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<<getw>> is a remnant of K&R C, it is not part of any ISO C Standard.
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<<fread>> should be used instead. In fact, this implementation of
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<<getw>> is based upon <<fread>>.
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Supporting OS subroutines required: <<fread>>. */
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "%W% (Berkeley) %G%";
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#endif /* LIBC_SCCS and not lint */
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#include <_ansi.h>
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#include <stdio.h>
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int
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_DEFUN(getw, (fp),
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register FILE *fp)
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{
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int result;
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if (fread ((char*)&result, sizeof (result), 1, fp) != 1)
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return EOF;
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return result;
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}
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