Class Bitmap

extensions/flexExtContainer.cpp:38–83

#include "../include/NvFlexExt.h"

class Bitmap
{
public:

	typedef unsigned int Word;

	static const int kWordSize = sizeof(Word)*8;

	Bitmap(int numBits) : mBits((numBits+kWordSize-1)/kWordSize)
	{
	}

	inline void Set(int bit)
	{
		const int wordIndex = bit/kWordSize;
		const int bitIndex = bit&(kWordSize-1);

		const Word word = mBits[wordIndex];

		mBits[wordIndex] = word|(1<<bitIndex);
	}

	inline void Reset(int bit)
	{
		const int wordIndex = bit/kWordSize;
		const int bitIndex = bit&(kWordSize-1);

		const Word word = mBits[wordIndex];

		mBits[wordIndex] = word&~(1<<bitIndex);
	}

	inline bool IsSet(int bit)
	{
		const int wordIndex = bit/kWordSize;
		const int bitIndex = bit&(kWordSize-1);

		const Word word = mBits[wordIndex];

		return (word & (1<<bitIndex)) != 0;
	}

private:

	std::vector<Word> mBits;
};


struct NvFlexExtContainer