Bitwise.c File Reference

Functions for bit-level operations. More...

#include "pch.h"

Functions
int	TestBit (int BitNumber, unsigned long *addr)
	Check whether the bit is set or not.
void	ClearBit (int BitNumber, unsigned long *addr)
	unset the bit
void	SetBit (int BitNumber, unsigned long *addr)
	set the bit

Detailed Description

Functions for bit-level operations.

Author

Sina Karvandi (sina@.nosp@m.hype.nosp@m.rdbg..nosp@m.org)

Version

0.2

Date

2023-04-27

Copyright

This project is released under the GNU Public License v3.

Function Documentation

ClearBit()

void ClearBit	(	int	BitNumber,
		unsigned long *	addr )

unset the bit

Parameters

BitNumber
addr

{
    BITMAP_ENTRY(BitNumber, addr) &= ~(1UL << BITMAP_SHIFT(BitNumber));
}

SetBit()

void SetBit	(	int	BitNumber,
		unsigned long *	addr )

set the bit

Parameters

BitNumber
addr

{
    BITMAP_ENTRY(BitNumber, addr) |= (1UL << BITMAP_SHIFT(BitNumber));
}

TestBit()

int TestBit	(	int	BitNumber,
		unsigned long *	addr )

Check whether the bit is set or not.

Parameters

BitNumber
addr

Returns

int

{
    return (BITMAP_ENTRY(BitNumber, addr) >> BITMAP_SHIFT(BitNumber)) & 1;
}