Add a new sys/limits.h file which in turn depends on machine/_limits.h

to get actual constant values. This is in preparation for machine/limits.h
retirement.

Discussed on:	standards@
Submitted by:	Craig Rodrigues <rodrigc@attbi.com>  (*)
Modified by:	kan

1 files changed, 107 insertions, 0 deletions

diff --git a/sys/sys/limits.h b/sys/sys/limits.h
new file mode 100644
index 000000000000..92387e9d929a
--- /dev/null
+++ b/sys/sys/limits.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_SYS_LIMITS_H_
+#define	_SYS_LIMITS_H_
+
+#include <machine/_limits.h>
+
+#define	CHAR_BIT	__CHAR_BIT	/* number of bits in a char */
+
+/*
+ * According to ANSI (section 2.2.4.2), the values below must be usable by
+ * #if preprocessing directives.  Additionally, the expression must have the
+ * same type as would an expression that is an object of the corresponding
+ * type converted according to the integral promotions.  The subtraction for
+ * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
+ * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
+ * These numbers are for the default configuration of gcc.  They work for
+ * some other compilers as well, but this should not be depended on.
+ */
+#define	SCHAR_MAX	__SCHAR_MAX	/* max value for a signed char */
+#define	SCHAR_MIN	__SCHAR_MIN	/* min value for a signed char */
+
+#define	UCHAR_MAX	__UCHAR_MAX	/* max value for an unsigned char */
+#define	CHAR_MAX	__CHAR_MAX	/* max value for a char */
+#define	CHAR_MIN	__CHAR_MIN	/* min value for a char */
+
+#define	USHRT_MAX	__USHRT_MAX	/* max value for an unsigned short */
+#define	SHRT_MAX	__SHRT_MAX	/* max value for a short */
+#define	SHRT_MIN	__SHRT_MIN	/* min value for a short */
+
+#define	UINT_MAX	__UNIT_MAX	/* max value for an unsigned int */
+#define	INT_MAX		__INT_MAX	/* max value for an int */
+#define	INT_MIN		__INT_MIN	/* min value for an int */
+
+#define	ULONG_MAX	__ULONG_MAX	/* max for an unsigned long */
+#define	LONG_MAX	__LONG_MAX	/* max for a long */
+#define	LONG_MIN	__LONG_MIN	/* min for a long */
+
+/* Long longs and longs are the same size on the alpha. */
+					/* max for an unsigned long long */
+#define	ULLONG_MAX	__ULLONG_MAX
+#define	LLONG_MAX	__LLONG_MAX	/* max for a long long */
+#define	LLONG_MIN	__LLONG_MIN	/* min for a long long */
+
+#if !defined(_ANSI_SOURCE)
+#define	SSIZE_MAX	__SSIZE_MAX	/* max value for a ssize_t */
+
+#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
+#define	SIZE_T_MAX	__SIZE_T_MAX	/* max value for a size_t */
+
+#define	OFF_MAX		__OFF_MAX	/* max value for a off_t */
+#define	OFF_MIN		__OFF_MIN	/* min value for a off_t */
+
+/* Quads and longs are the same on the alpha.  Ensure they stay in sync. */
+#define	UQUAD_MAX	(__UQUAD_MAX)	/* max value for a uquad_t */
+#define	QUAD_MAX	(__QUAD_MAX)	/* max value for a quad_t */
+#define	QUAD_MIN	(__QUAD_MIN)	/* min value for a quad_t */
+#endif /* !_POSIX_SOURCE && !_XOPEN_SOURCE */
+#endif /* !_ANSI_SOURCE */
+
+#if (!defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)) || defined(_XOPEN_SOURCE)
+#define	LONG_BIT	__LONG_BIT
+#define	WORD_BIT	__WORD_BIT
+
+#define	DBL_DIG		__DBL_DIG
+#define	DBL_MAX		__DBL_MAX
+#define	DBL_MIN		__DBL_MIN
+
+#define	FLT_DIG		__FLT_DIG
+#define	FLT_MAX		__FLT_MAX
+#define	FLT_MIN		__FLT_MIN
+#endif
+
+#endif /* !_SYS_LIMITS_H_ */