#ifndef CRYPTOPP_WORDS_H#define CRYPTOPP_WORDS_H#include "misc.h"NAMESPACE_BEGIN(CryptoPP)inline unsigned int CountWords(const word *X, unsigned int N){	while (N && X[N-1]==0)		N--;	return N;}inline void SetWords(word *r, word a, unsigned int n){	for (unsigned int i=0; i<n; i++)		r[i] = a;}inline void CopyWords(word *r, const word *a, unsigned int n){	for (unsigned int i=0; i<n; i++)		r[i] = a[i];}inline void XorWords(word *r, const word *a, const word *b, unsigned int n){	for (unsigned int i=0; i<n; i++)		r[i] = a[i] ^ b[i];}inline void XorWords(word *r, const word *a, unsigned int n){	for (unsigned int i=0; i<n; i++)		r[i] ^= a[i];}inline void AndWords(word *r, const word *a, const word *b, unsigned int n){	for (unsigned int i=0; i<n; i++)		r[i] = a[i] & b[i];}inline void AndWords(word *r, const word *a, unsigned int n){	for (unsigned int i=0; i<n; i++)		r[i] &= a[i];}inline word ShiftWordsLeftByBits(word *r, unsigned int n, unsigned int shiftBits){	assert (shiftBits<WORD_BITS);	word u, carry=0;	if (shiftBits)		for (unsigned int i=0; i<n; i++)		{			u = r[i];			r[i] = (u << shiftBits) | carry;			carry = u >> (WORD_BITS-shiftBits);		}	return carry;}inline word ShiftWordsRightByBits(word *r, unsigned int n, unsigned int shiftBits){	assert (shiftBits<WORD_BITS);	word u, carry=0;	if (shiftBits)		for (int i=n-1; i>=0; i--)		{			u = r[i];			r[i] = (u >> shiftBits) | carry;			carry = u << (WORD_BITS-shiftBits);		}	return carry;}inline void ShiftWordsLeftByWords(word *r, unsigned int n, unsigned int shiftWords){	shiftWords = STDMIN(shiftWords, n);	if (shiftWords)	{		for (unsigned int i=n-1; i>=shiftWords; i--)			r[i] = r[i-shiftWords];		SetWords(r, 0, shiftWords);	}}inline void ShiftWordsRightByWords(word *r, unsigned int n, unsigned int shiftWords){	shiftWords = STDMIN(shiftWords, n);	if (shiftWords)	{		for (unsigned int i=0; i+shiftWords<n; i++)			r[i] = r[i+shiftWords];		SetWords(r+n-shiftWords, 0, shiftWords);	}}NAMESPACE_END#endif