Thread: how achieve split of unsigned4 into two signed2's using bit-wise instead of union?

I know this code is completely valid but in the interest of learning, how would I achieve the same thing as below using bitwise operations on the unsigned4 value instead of the union "trick"?

Code:

void value(unsigned4 v)
{
    union 
    {
        struct
        {
        signed2 left;
        signed2 right;
        } split;
 
        unsigned4 combined;
 
    } trick;
 
    //Set the base value
    trick.combined = v;
 
    //"Split" the value into left and right values
    left = trick.split.left;
    right = trick.split.right;
}