newlib-2.4.0

git-svn-id: svn://kolibrios.org@6536 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-09-27 20:37:49 +00:00
parent 8eb81c3968
commit e6fe081453
120 changed files with 7543 additions and 1031 deletions
--- a/contrib/sdk/sources/newlib/libc/stdio/getc.c
+++ b/contrib/sdk/sources/newlib/libc/stdio/getc.c
@@ -0,0 +1,117 @@
+/*
+ * 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
+<<getc>>---read a character (macro)
+
+INDEX
+	getc
+INDEX
+	_getc_r
+
+ANSI_SYNOPSIS
+	#include <stdio.h>
+	int getc(FILE *<[fp]>);
+
+	#include <stdio.h>
+	int _getc_r(struct _reent *<[ptr]>, FILE *<[fp]>);
+
+TRAD_SYNOPSIS
+	#include <stdio.h>
+	int getc(<[fp]>)
+	FILE *<[fp]>;
+
+	#include <stdio.h>
+	int _getc_r(<[ptr]>, <[fp]>)
+	struct _reent *<[ptr]>;
+	FILE *<[fp]>;
+
+DESCRIPTION
+<<getc>> is a macro, defined in <<stdio.h>>.  You can use <<getc>>
+to get the next single character from the file or stream
+identified by <[fp]>.  As a side effect, <<getc>> advances the file's
+current position indicator.
+
+For a subroutine version of this macro, see <<fgetc>>.
+
+The <<_getc_r>> function is simply the reentrant version of <<getc>>
+which passes an additional reentrancy structure pointer argument: <[ptr]>.
+
+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, <<getc>> returns <<EOF>>.
+
+You can distinguish the two situations that cause an <<EOF>> result by
+using the <<ferror>> and <<feof>> functions.
+
+PORTABILITY
+ANSI C requires <<getc>>; it suggests, but does not require, that
+<<getc>> be implemented as a macro.  The standard explicitly permits
+macro implementations of <<getc>> to use the argument more than once;
+therefore, in a portable program, you should not use an expression
+with side effects as the <<getc>> argument.
+
+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 */
+
+#include <_ansi.h>
+#include <stdio.h>
+#include "local.h"
+
+/*
+ * A subroutine version of the macro getc.
+ */
+
+#undef getc
+
+int
+_DEFUN(_getc_r, (ptr, fp),
+       struct _reent *ptr _AND
+       register FILE *fp)
+{
+  int result;
+  CHECK_INIT (ptr, fp);
+  _newlib_flockfile_start (fp);
+  result = __sgetc_r (ptr, fp);
+  _newlib_flockfile_end (fp);
+  return result;
+}
+
+#ifndef _REENT_ONLY
+
+int
+_DEFUN(getc, (fp),
+       register FILE *fp)
+{
+  int result;
+  struct _reent *reent = _REENT;
+
+  CHECK_INIT (reent, fp);
+  _newlib_flockfile_start (fp);
+  result = __sgetc_r (reent, fp);
+  _newlib_flockfile_end (fp);
+  return result;
+}
+
+#endif /* !_REENT_ONLY */