Create a 32-bit integer from 2 16-bit integer

[Tony Liu]

Hi, how to create a 32-bit integer from 2 16-bit integer?
Thanks
Tony

 

[Jon Skeet]

Hi, how to create a 32-bit integer from 2 16-bit integer?

Shift and or them:

int combined = (highBits << 16) | lowBits;

 

[Tony Liu]

Thanks, in addition, how to create a 64-bit integer from 2 32-bit integers?

Tony

 

[Jon Skeet]

Thanks, in addition, how to create a 64-bit integer from 2 32-bit integers?

Apply the same advice again - the only difference is that you have to
cast the int to long before shifting:

long combined = (((long)highBits)<<32) | lowBits;

 

[Duncan McNutt]

1 loo roll
2. sticky tape
3. glue

 

[Tony Liu]

Thanks again, but how to get back the 2 32-bit integers from the 64-bit
integer?

Thanks in advance
Tony

 

[Jon Skeet]

Thanks again, but how to get back the 2 32-bit integers from the 64-bit
integer?

Just use & to mask bits and shift right appropriately. If this isn't
enough, please consult a book about bit shifting - I'm not going to
give you an answer for every single possible thing you might want to do
with bit shifting.