36 bit Comparison

[lecan]

Hi to all the GURUS of c++,

I am relatively new to programming in C++. I wanted to compare and shift 36 bit data. I tried to store hex data in a double (64 bit), but would show up differently in the memory, may be because it is interpreting some part as mantissa and other as exponent.

If I use, integer (32 bit) I would have to use 2 of them to store 36 bits. I wanted to know if there is any open library or class in which I can store 36 bits and then shift or compare them.

If not, then Shifting an integer would be a pain, as when shifting left by one bit, the most significant bit is lost, unless stored someplace before shifting. Please advice.

thanks,

lecan

 

[DataJanitor]

Check out the long long or __int64 type in VC++ 7.

Before that you could use a structure (there was one defined in the Windows.h header already) to deal with the two 32-bit chunks.

DJ