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, 44 insertions, 51 deletions

diff --git a/sys/arm/include/_limits.h b/sys/arm/include/_limits.h
index b5e3bd1..ce1cd20 100644
--- a/sys/arm/include/_limits.h
+++ b/sys/arm/include/_limits.h
@@ -34,72 +34,65 @@
  * $FreeBSD$
  */
 
-#ifndef _MACHINE_LIMITS_H_
-#define	_MACHINE_LIMITS_H_
+#ifndef _MACHINE__LIMITS_H_
+#define	_MACHINE__LIMITS_H_
 
-#define	CHAR_BIT	8		/* number of bits in a char */
+#define	__CHAR_BIT	8		/* 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	0x7f		/* max value for a signed char */
-#define	SCHAR_MIN	(-0x7f - 1)	/* min value for a signed char */
-
-#define	UCHAR_MAX	0xff		/* max value for an unsigned char */
+#define	__SCHAR_MAX	0x7f		/* max value for a signed char */
+#define	__SCHAR_MIN	(-0x7f - 1)	/* min value for a signed char */
 
-#ifdef __CHAR_UNSIGNED__
-#define	CHAR_MAX	UCHAR_MAX	/* max value for a char */
-#define	CHAR_MIN	0		/* min value for a char */
-#else
-#define	CHAR_MAX	SCHAR_MAX	/* max value for a char */
-#define	CHAR_MIN	SCHAR_MIN	/* min value for a char */
-#endif
+#define	__UCHAR_MAX	0xff		/* max value for an unsigned char */
 
-#define	USHRT_MAX	0xffff		/* max value for an unsigned short */
-#define	SHRT_MAX	0x7fff		/* max value for a short */
-#define	SHRT_MIN	(-0x7fff - 1)	/* min value for a short */
+#define	__USHRT_MAX	0xffff		/* max value for an unsigned short */
+#define	__SHRT_MAX	0x7fff		/* max value for a short */
+#define	__SHRT_MIN	(-0x7fff - 1)	/* min value for a short */
 
-#define	UINT_MAX	0xffffffffU	/* max value for an unsigned int */
-#define	INT_MAX		0x7fffffff	/* max value for an int */
-#define	INT_MIN		(-0x7fffffff - 1)	/* min value for an int */
+#define	__UINT_MAX	0xffffffffU	/* max value for an unsigned int */
+#define	__INT_MAX	0x7fffffff	/* max value for an int */
+#define	__INT_MIN	(-0x7fffffff - 1)	/* min value for an int */
 
 /* Bad hack for gcc configured to give 64-bit longs. */
 #ifdef _LARGE_LONG
-#define	ULONG_MAX	0xffffffffffffffffUL
-#define	LONG_MAX	0x7fffffffffffffffL
-#define	LONG_MIN	(-0x7fffffffffffffffL - 1)
+#define	__ULONG_MAX	0xffffffffffffffffUL
+#define	__LONG_MAX	0x7fffffffffffffffL
+#define	__LONG_MIN	(-0x7fffffffffffffffL - 1)
 #else
-#define	ULONG_MAX	0xffffffffUL	/* max value for an unsigned long */
-#define	LONG_MAX	0x7fffffffL	/* max value for a long */
-#define	LONG_MIN	(-0x7fffffffL - 1)	/* min value for a long */
+#define	__ULONG_MAX	0xffffffffUL	/* max value for an unsigned long */
+#define	__LONG_MAX	0x7fffffffL	/* max value for a long */
+#define	__LONG_MIN	(-0x7fffffffL - 1)	/* min value for a long */
 #endif
 
 			/* max value for an unsigned long long */
-#define	ULLONG_MAX	0xffffffffffffffffULL
-#define	LLONG_MAX	0x7fffffffffffffffLL	/* max value for a long long */
-#define	LLONG_MIN	(-0x7fffffffffffffffLL - 1)  /* min for a long long */
+#define	__ULLONG_MAX	0xffffffffffffffffULL
+#define	__LLONG_MAX	0x7fffffffffffffffLL	/* max value for a long long */
+#define	__LLONG_MIN	(-0x7fffffffffffffffLL - 1)  /* min for a long long */
 
-#if !defined(_ANSI_SOURCE)
-#define	SSIZE_MAX	INT_MAX		/* max value for a ssize_t */
+#define	__SSIZE_MAX	__INT_MAX	/* max value for a ssize_t */
 
-#if !defined(_POSIX_SOURCE)
-#define	SIZE_T_MAX	UINT_MAX	/* max value for a size_t */
+#define	__SIZE_T_MAX	__UINT_MAX	/* max value for a size_t */
 
-#define	OFF_MAX		LLONG_MAX	/* max value for a off_t */
-#define	OFF_MIN		LLONG_MIN	/* min value for a off_t */
+#define	__OFF_MAX	__LLONG_MAX	/* max value for a off_t */
+#define	__OFF_MIN	__LLONG_MIN	/* min value for a off_t */
 
 /* Quads and long longs are the same size.  Ensure they stay in sync. */
-#define	UQUAD_MAX	ULLONG_MAX	/* max value for a uquad_t */
-#define	QUAD_MAX	LLONG_MAX	/* max value for a quad_t */
-#define	QUAD_MIN	LLONG_MIN	/* min value for a quad_t */
-#endif /* !_POSIX_SOURCE */
-#endif /* !_ANSI_SOURCE */
+#define	__UQUAD_MAX	__ULLONG_MAX	/* max value for a uquad_t */
+#define	__QUAD_MAX	__LLONG_MAX	/* max value for a quad_t */
+#define	__QUAD_MIN	__LLONG_MIN	/* min value for a quad_t */
+
+#ifdef _LARGE_LONG
+#define	__LONG_BIT	64
+#else
+#define	__LONG_BIT	32
+#endif
+#define	__WORD_BIT	32
+
+#define	__DBL_DIG	15
+#define	__DBL_MAX	1.7976931348623157E+308
+#define	__DBL_MIN	2.2250738585072014E-308
+
+#define	__FLT_DIG	6
+#define	__FLT_MAX	3.40282347E+38F
+#define	__FLT_MIN	1.17549435E-38F
 
-#endif /* !_MACHINE_LIMITS_H_ */
+#endif /* !_MACHINE__LIMITS_H_ */