Collaboration diagram for C language support macros:

Macros
#define	DPKG_GCC_VERSION 0

#define	DPKG_ATTR_UNUSED

#define	DPKG_ATTR_CONST

#define	DPKG_ATTR_PURE

#define	DPKG_ATTR_MALLOC

#define	DPKG_ATTR_NORET

#define	DPKG_ATTR_PRINTF(n)

#define	DPKG_ATTR_VPRINTF(n)

#define	DPKG_ATTR_NONNULL(...)

#define	DPKG_ATTR_REQRET

#define	DPKG_ATTR_SENTINEL

#define	DPKG_BEGIN_DECLS

#define	DPKG_END_DECLS

#define	DPKG_NULL NULL
	A null pointer constant that works on C or C++. More...

#define	DPKG_STATIC_CAST(type, expr) (type)(expr)
	Cast an expression to a given type that works on C or C++. More...

#define	DPKG_BIT(n) (1UL << (n))
	Return the integer value of bit n. More...

#define	array_count(a) (sizeof(a) / sizeof((a)[0]))
	Returns the amount of items in an array. More...

#define	min(a, b) ((a) < (b) ? (a) : (b))

#define	max(a, b) ((a) > (b) ? (a) : (b))

#define	clamp(v, l, h) ((v) > (h) ? (h) : ((v) < (l) ? (l) : (v)))
	Returns a normalized value within the low and high limits. More...

Detailed Description

Macro Definition Documentation

◆ array_count

#define array_count ( a ) (sizeof(a) / sizeof((a)[0]))

Returns the amount of items in an array.

◆ clamp

#define clamp	(	v,
		l,
		h
	)	((v) > (h) ? (h) : ((v) < (l) ? (l) : (v)))

Returns a normalized value within the low and high limits.

Parameters

v	The value to clamp.
l	The low limit.
h	The high limit.

◆ DPKG_ATTR_CONST

#define DPKG_ATTR_CONST

◆ DPKG_ATTR_MALLOC

#define DPKG_ATTR_MALLOC

◆ DPKG_ATTR_NONNULL

#define DPKG_ATTR_NONNULL ( ... )

◆ DPKG_ATTR_NORET

#define DPKG_ATTR_NORET

◆ DPKG_ATTR_PRINTF

#define DPKG_ATTR_PRINTF ( n )

◆ DPKG_ATTR_PURE

#define DPKG_ATTR_PURE

◆ DPKG_ATTR_REQRET

#define DPKG_ATTR_REQRET

◆ DPKG_ATTR_SENTINEL

#define DPKG_ATTR_SENTINEL

◆ DPKG_ATTR_UNUSED

#define DPKG_ATTR_UNUSED

◆ DPKG_ATTR_VPRINTF

#define DPKG_ATTR_VPRINTF ( n )

◆ DPKG_BEGIN_DECLS

#define DPKG_BEGIN_DECLS

◆ DPKG_BIT

#define DPKG_BIT ( n ) (1UL << (n))

Return the integer value of bit n.

◆ DPKG_END_DECLS

#define DPKG_END_DECLS

◆ DPKG_GCC_VERSION

#define DPKG_GCC_VERSION 0

◆ DPKG_NULL

#define DPKG_NULL NULL

A null pointer constant that works on C or C++.

To be used only on header files, where having to conditionalize the code to use either NULL or nullptr would be too cumbersome. Non-header files should use the appropriate constant directly.

◆ DPKG_STATIC_CAST

#define DPKG_STATIC_CAST	(	type,
		expr
	)	(type)(expr)

Cast an expression to a given type that works on C or C++.