get_byte.h

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/*
* Read out bytes
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
 
#ifndef BOTAN_GET_BYTE_H__
#define BOTAN_GET_BYTE_H__
 
#include <botan/types.h>
 
namespace Botan {
 
/**
* Byte extraction
* @param byte_num which byte to extract, 0 == highest byte
* @param input the value to extract from
* @return byte byte_num of input
*/
template<typename T> inline byte get_byte(size_t byte_num, T input)
   {
   return static_cast<byte>(
      input >> ((sizeof(T)-1-(byte_num&(sizeof(T)-1))) << 3)
      );
   }
 
}
 
#endif