URL
https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio/] [getchar.c] - Rev 232
Go to most recent revision | Compare with Previous | Blame | View Log
/* * 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 <<getchar>>---read a character (macro) INDEX getchar INDEX _getchar_r ANSI_SYNOPSIS #include <stdio.h> int getchar(void); int _getchar_r(struct _reent *<[reent]>); TRAD_SYNOPSIS #include <stdio.h> int getchar(); int _getchar_r(<[reent]>) char * <[reent]>; DESCRIPTION <<getchar>> is a macro, defined in <<stdio.h>>. You can use <<getchar>> to get the next single character from the standard input stream. As a side effect, <<getchar>> advances the standard input's current position indicator. The alternate function <<_getchar_r>> is a reentrant version. The extra argument <[reent]> is a pointer to a reentrancy structure. RETURNS The next character (read as an <<unsigned char>>, and cast to <<int>>), unless there is no more data, or the host system reports a read error; in either of these situations, <<getchar>> returns <<EOF>>. You can distinguish the two situations that cause an <<EOF>> result by using `<<ferror(stdin)>>' and `<<feof(stdin)>>'. PORTABILITY ANSI C requires <<getchar>>; it suggests, but does not require, that <<getchar>> be implemented as a macro. Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, <<lseek>>, <<read>>, <<sbrk>>, <<write>>. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "%W% (Berkeley) %G%"; #endif /* LIBC_SCCS and not lint */ /* * A subroutine version of the macro getchar. */ #include <_ansi.h> #include <reent.h> #include <stdio.h> #include "local.h" #undef getchar int _DEFUN(_getchar_r, (reent), struct _reent *reent) { _REENT_SMALL_CHECK_INIT (reent); return _getc_r (reent, _stdin_r (reent)); } #ifndef _REENT_ONLY int _DEFUN_VOID(getchar) { /* CHECK_INIT is called (eventually) by __srefill_r. */ _REENT_SMALL_CHECK_INIT (_REENT); return _getc_r (_REENT, _stdin_r (_REENT)); } #endif
Go to most recent revision | Compare with Previous | Blame | View Log