Bitmasks functions. More...

Macros
#define	bit_set(V, B) ((V) \| (1U << (B)))
	Sets the given bit.

#define	bit_clear(V, B) ((V) & ~(1U << (B)))
	Clears the given bit.

#define	bit_flip(V, B) ((V) ^ (1U << (B)))
	Flips the given bit.

#define	bit_check(V, B) ((V) & (1U << (B)))
	Checks if the given bit is 1.

#define	bit_toggle(V, B, C) ((C) ? bit_set(V, B) : bit_clear(V, B))
	Sets the given bit based on control bit C.

#define	bit_set_assign(V, B) ((V) \|= (1U << (B)))
	Sets the given bit, permanently.

#define	bit_clear_assign(V, B) ((V) &= ~(1U << (B)))
	Clears the given bit, permanently.

#define	bit_flip_assign(V, B) ((V) ^= (1U << (B)))
	Flips the given bit, permanently.

#define	bit_toggle_assign(V, B, C) ((C) ? bit_set_assign(V, B) : bit_clear_assign(V, B))
	Sets the given bit based on control bit C.

#define	bitmask_set(V, M) ((V) \| (M))
	Sets the bits identified by the mask.

#define	bitmask_clear(V, M) ((V) & ~(M))
	Clears the bits identified by the mask.

#define	bitmask_flip(V, M) ((V) ^ (M))
	Flips the bits identified by the mask.

#define	bitmask_check(V, M) ((V) & (M))
	Checks if the bits identified by the mask are all 1.

#define	bitmask_exact(V, M) (((V) & (M)) == (M))
	Checks if all the bits identified by the mask are all 1.

#define	bitmask_set_assign(V, M) ((V) \|= (M))
	Sets the bits identified by the mask, permanently.

#define	bitmask_clear_assign(V, M) ((V) &= ~(M))
	Clears the bits identified by the mask, permanently.

#define	bitmask_flip_assign(V, M) ((V) ^= (M))
	Flips the bits identified by the mask, permanently.

Functions
static int	find_first_zero (unsigned long value)
	Finds the first bit at zero, starting from the less significative bit. More...

static int	find_first_non_zero (unsigned long value)
	Finds the first bit not zero, starting from the less significative bit. More...

Detailed Description

Bitmasks functions.

Copyright: (c) 2014-2024 This file is distributed under the MIT License. See LICENSE.md for details.

Function Documentation

static int find_first_non_zero ( unsigned long value )

inlinestatic

Finds the first bit not zero, starting from the less significative bit.

Parameters

value the value we need to analyze.

static int find_first_zero ( unsigned long value )

inlinestatic

Finds the first bit at zero, starting from the less significative bit.

Parameters

value the value we need to analyze.