simpleBit.h File Reference

Contains three macros that allow simple bit manipulations on an (presumably unsigned) 64 bit integer. More...

#include <cassert>
#include <cmath>

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Macros
#define	SIMPLEBIT_H
	macro for avoiding multiple inclusion during compilation More...
#define	B(x, i)   ((x) & (0x80000000 >> (i)))
	Extract the bit at the specified position i from x. More...
#define	setB(x, i)   x= ((x) | (0x80000000 >> (i)))
	Set the bit at the specified position i in x to 1. More...
#define	delB(x, i)   x= ((x) & (~(0x80000000 >> (i))))
	Set the bit at the specified position i in x to 0. More...

Detailed Description

Contains three macros that allow simple bit manipulations on an (presumably unsigned) 64 bit integer.

Macro Definition Documentation

#define B	(		x,
			i
	)		((x) & (0x80000000 >> (i)))

Extract the bit at the specified position i from x.

#define delB	(		x,
			i
	)		x= ((x) & (~(0x80000000 >> (i))))

Set the bit at the specified position i in x to 0.

#define setB	(		x,
			i
	)		x= ((x) | (0x80000000 >> (i)))

Set the bit at the specified position i in x to 1.

#define SIMPLEBIT_H

macro for avoiding multiple inclusion during compilation