Convert unsigned int to signed int C

Question

I am trying to convert 65529 from an unsigned int to a signed int. I tried doing a cast like this:

unsigned int x = 65         


        

Answer 1

Since converting unsigned values use to represent positive numbers converting it can be done by setting the most significant bit to 0. Therefore a program will not interpret that as a Two`s complement value. One caveat is that this will lose information for numbers that near max of the unsigned type.

template 
TSinged UnsignedToSigned(TUnsigned val)
{
    return val & ~(1 << ((sizeof(TUnsigned) * 8) - 1));
}