/*
* limits.h
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is a part of the mingw-runtime package.
- * No warranty is given; refer to the file DISCLAIMER within the package.
*
- * Functions for manipulating paths and directories (included from io.h)
- * plus functions for setting the current drive.
+ * Manifest constants defining the sizes of integral types.
*
- * Defines constants for the sizes of integral types.
+ * $Id$
*
- * NOTE: GCC should supply a version of this header and it should be safe to
- * use that version instead of this one (maybe safer).
+ * Written by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
+ * Copyright (C) 1997, 1999-2001, 2004, 2005, 2010, 2012, 2017,
+ * MinGW.org Project
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice, this permission notice, and the following
+ * disclaimer shall be included in all copies or substantial portions of
+ * the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OF OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
*/
+#ifndef _LIMITS_H
+#pragma GCC system_header
+#define _LIMITS_H
-#ifndef _LIMITS_H_
-#define _LIMITS_H_
-
-/* All the headers include this file. */
+/* All MinGW headers are required to include <_mingw.h>
+ */
#include <_mingw.h>
-/*
- * File system limits
+/* File system limits
+ *
+ * TODO (REVIEW): Are NAME_MAX and OPEN_MAX file system limits, or not?
+ * Are they the same as FILENAME_MAX and FOPEN_MAX from <stdio.h>?
*
- * TODO: NAME_MAX and OPEN_MAX are file system limits or not? Are they the
- * same as FILENAME_MAX and FOPEN_MAX from stdio.h?
- * NOTE: PATH_MAX is the POSIX equivalent for Microsoft's MAX_PATH; the two
- * are semantically identical, with a limit of 259 characters for the
- * path name, plus one for a terminating NUL, for a total of 260.
+ * NOTE: PATH_MAX is the POSIX equivalent for Microsoft's MAX_PATH; the
+ * two are semantically identical, with a limit of 259 characters for the
+ * path name, plus one for a terminating NUL, making a total of 260.
*/
#ifndef __STRICT_ANSI__
# define PATH_MAX 260
#endif
-/*
- * Characteristics of the char data type.
+/* Characteristics of the char data type.
*
- * TODO: Is MB_LEN_MAX correct?
+ * FIXME: Is MB_LEN_MAX correct? Probably yes, for Microsoft MBCS, which
+ * effectively seem to all be DBCS.
*/
#define CHAR_BIT 8
#define MB_LEN_MAX 2
#define UCHAR_MAX 255
-/* TODO: Is this safe? I think it might just be testing the preprocessor,
- * not the compiler itself... */
-#if ('\x80' < 0)
-#define CHAR_MIN SCHAR_MIN
-#define CHAR_MAX SCHAR_MAX
+#if '\x80' < 0
+/* FIXME: is this safe? I think it might just be testing
+ * the preprocessor, not the compiler itself.
+ */
+# define CHAR_MIN SCHAR_MIN
+# define CHAR_MAX SCHAR_MAX
#else
-#define CHAR_MIN 0
-#define CHAR_MAX UCHAR_MAX
+# define CHAR_MIN 0
+# define CHAR_MAX UCHAR_MAX
#endif
-/*
- * Maximum and minimum values for ints.
+/* Maximum and minimum values for ints.
*/
#define INT_MAX 2147483647
#define INT_MIN (-INT_MAX-1)
-#define UINT_MAX 0xffffffff
+#define UINT_MAX 0xFFFFFFFF
-/*
- * Maximum and minimum values for shorts.
+/* Maximum and minimum values for shorts.
*/
#define SHRT_MAX 32767
#define SHRT_MIN (-SHRT_MAX-1)
-#define USHRT_MAX 0xffff
+#define USHRT_MAX 0xFFFF
-/*
- * Maximum and minimum values for longs and unsigned longs.
- *
- * TODO: This is not correct for Alphas, which have 64 bit longs.
+/* Maximum and minimum values for longs and unsigned longs;
+ * this isn't correct for Alphas, which have 64 bit longs, but
+ * that is probably no longer a concern.
*/
#define LONG_MAX 2147483647L
#define LONG_MIN (-LONG_MAX-1)
-#define ULONG_MAX 0xffffffffUL
+#define ULONG_MAX 0xFFFFFFFFUL
#ifndef __STRICT_ANSI__
-/* POSIX wants this. */
-#define SSIZE_MAX LONG_MAX
+/* POSIX wants this.
+ */
+#define SSIZE_MAX LONG_MAX
#endif
-#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \
- || !defined(__STRICT_ANSI__)
-/* ISO C9x macro names */
-#define LLONG_MAX 9223372036854775807LL
-#define LLONG_MIN (-LLONG_MAX - 1)
-#define ULLONG_MAX (2ULL * LLONG_MAX + 1)
+#if _ISOC99_SOURCE
+/* Implicitly defined in <_mingw.h>, (or explicitly defined by
+ * the user), for C99, C++, or POSIX.1-2001; make these ISO-C99
+ * macro names available.
+ */
+#define LLONG_MAX 9223372036854775807LL
+#define LLONG_MIN (-LLONG_MAX - 1)
+#define ULLONG_MAX (2ULL * LLONG_MAX + 1)
#endif
-/*
- * The GNU C compiler also allows 'long long int'
+#if defined __GNUC__ && ! defined __STRICT_ANSI__
+/* The GNU C compiler also allows 'long long int', but we don't
+ * want that capability polluting the strict ANSI namespace.
*/
-#if !defined(__STRICT_ANSI__) && defined(__GNUC__)
-
#define LONG_LONG_MAX 9223372036854775807LL
#define LONG_LONG_MIN (-LONG_LONG_MAX-1)
#define ULONG_LONG_MAX (2ULL * LONG_LONG_MAX + 1)
-/* MSVC compatibility */
-#define _I64_MIN LONG_LONG_MIN
-#define _I64_MAX LONG_LONG_MAX
-#define _UI64_MAX ULONG_LONG_MAX
-
-#endif /* Not Strict ANSI and GNU C compiler */
-
+/* MSVC compatibility
+ */
+#define _I64_MIN LONG_LONG_MIN
+#define _I64_MAX LONG_LONG_MAX
+#define _UI64_MAX ULONG_LONG_MAX
-#endif /* not _LIMITS_H_ */
+#endif /* __GNUC__ && !__STRICT_ANSI__ */
+#endif /* !_LIMITS_H: $RCSfile$: end of file */
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