import newlib-2000-02-17 snapshot

1 files changed, 94 insertions, 0 deletions

diff --git a/newlib/libc/stdio/putchar.c b/newlib/libc/stdio/putchar.c
new file mode 100644
index 000000000..7f7c442e4
--- /dev/null
+++ b/newlib/libc/stdio/putchar.c
@@ -0,0 +1,94 @@
+/*
+ * 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
+<<putchar>>---write a character (macro)
+
+INDEX
+	putchar
+INDEX
+	_putchar_r
+
+ANSI_SYNOPSIS
+	#include <stdio.h>
+	int putchar(int <[ch]>);
+
+	int _putchar_r(void *<[reent]>, int <[ch]>);
+
+TRAD_SYNOPSIS
+	#include <stdio.h>
+	int putchar(<[ch]>)
+	int <[ch]>;
+
+	int _putchar_r(<[reent]>, <[ch]>)
+	char *<[reent]>;
+	int <[ch]>;
+
+DESCRIPTION
+<<putchar>> is a macro, defined in <<stdio.h>>.  <<putchar>>
+writes its argument to the standard output stream,
+after converting it from an <<int>> to an <<unsigned char>>.
+
+The alternate function <<_putchar_r>> is a reentrant version.  The
+extra argument <[reent]> is a pointer to a reentrancy structure.
+
+RETURNS
+If successful, <<putchar>> returns its argument <[ch]>.  If an error
+intervenes, the result is <<EOF>>.  You can use `<<ferror(stdin)>>' to
+query for errors.
+
+PORTABILITY
+ANSI C requires <<putchar>>; it suggests, but does not require, that
+<<putchar>> 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 putchar
+ */
+
+#include <stdio.h>
+
+#undef putchar
+
+int
+_putchar_r (ptr, c)
+     struct _reent *ptr;
+     int c;
+{
+  return __sputc (c, _stdout_r (ptr));
+}
+
+#ifndef _REENT_ONLY
+
+int
+putchar (c)
+     int c;
+{
+  /* CHECK_INIT is (eventually) called by __swbuf.  */
+
+  _putchar_r (_REENT, c);
+}
+
+#endif