From 1217289737588e65b088b3535428b27c7287d699 Mon Sep 17 00:00:00 2001
From: Manuel Novoa III <mjn3@codepoet.org>
Date: Fri, 1 Aug 2003 20:08:59 +0000
Subject: Add a new *scanf implementation, includeing the *wscanf functions.  
 Should be standards compliant and with several optional features,   including
 support for hexadecimal float notation, locale awareness,   glibc-like
 locale-specific digit grouping with the `'' flag, and   positional arg
 support.  I tested it pretty well (finding several   bugs in glibc's scanf in
 the process), but it is brand new so be   aware.

The *wprintf functions now support floating point output.  Also, a
  couple of bugs were squashed.  Finally, %a/%A conversions are
  now implemented.

Implement the glibc xlocale interface for thread-specific locale
  support.  Also add the various *_l(args, locale_t loc_arg) funcs.

  NOTE!!!  setlocale() is NOT threadsafe!  NOTE!!!

The strto{floating point} conversion functions are now locale aware.
  The also now support hexadecimal floating point notation.

Add the wcsto{floating point} conversion functions.

Fix a bug in mktime() related to dst.  Note that unlike glibc's mktime,
  uClibc's version always normalizes the struct tm before attempting
  to determine the correct dst setting if tm_isdst == -1 on entry.

Add a stub version of the libintl functions.  (untested)

Fixed a known memory leak in setlocale() related to the collation data.

Add lots of new config options (which Erik agreed to sort out :-),
  including finally exposing some of the stripped down stdio configs.
  Be careful with those though, as they haven't been tested in a
  long time.


(temporary) GOTCHAs...

The ctype functions are currently incorrect for 8-bit locales.  They
  will be fixed shortly.

The ctype functions are now table-based, resulting in larger staticly
  linked binaries.  I'll be adding an option to use the old approach
  in the stub locale configuration.
---
 libc/sysdeps/linux/common/bits/uClibc_uwchar.h | 56 ++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 libc/sysdeps/linux/common/bits/uClibc_uwchar.h

(limited to 'libc/sysdeps/linux/common/bits/uClibc_uwchar.h')

diff --git a/libc/sysdeps/linux/common/bits/uClibc_uwchar.h b/libc/sysdeps/linux/common/bits/uClibc_uwchar.h
new file mode 100644
index 000000000..206191276
--- /dev/null
+++ b/libc/sysdeps/linux/common/bits/uClibc_uwchar.h
@@ -0,0 +1,56 @@
+/*  Copyright (C) 2003     Manuel Novoa III
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!
+ *
+ *  Besides uClibc, I'm using this code in my libc for elks, which is
+ *  a 16-bit environment with a fairly limited compiler.  It would make
+ *  things much easier for me if this file isn't modified unnecessarily.
+ *  In particular, please put any new or replacement functions somewhere
+ *  else, and modify the makefile to use your version instead.
+ *  Thanks.  Manuel
+ *
+ *  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION! */
+
+
+/*  Define an internal unsigned int type __uwchar_t just large enough
+ *  to hold a wchar_t.
+ */
+
+#ifndef _UCLIBC_UWCHAR_H
+#define _UCLIBC_UWCHAR_H
+
+#include <limits.h>
+#include <stdint.h>
+
+#if WCHAR_MIN == 0
+typedef wchar_t				__uwchar_t;
+#elif WCHAR_MAX <= USHRT_MAX
+typedef unsigned short		__uwchar_t;
+#elif WCHAR_MAX <= UINT_MAX
+typedef unsigned int		__uwchar_t;
+#elif WCHAR_MAX <= ULONG_MAX
+typedef unsigned long		__uwchar_t;
+#elif defined(ULLONG_MAX) && (WCHAR_MAX <= ULLONG_MAX)
+typedef unsigned long long	__uwchar_t;
+#elif WCHAR_MAX <= UINTMAX_MAX
+typedef uintmax_t			__uwchar_t;
+#else
+#error Can not determine an appropriate type for __uwchar_t!
+#endif
+
+#endif /* _UCLIBC_UWCHAR_H */
-- 
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