This intrinsic inserts a UHSUB16 instruction into the instruction stream generated by the compiler. It enables you to perform two unsigned 16-bit integer subtractions, halving the results.

unsigned int __uhsub16(unsigned int val1, unsigned int val2)

where:

The __uhsub16 intrinsic returns:

Example:

unsigned int subtract_and_halve(unsigned int val1, unsigned int val2)
{
  unsigned int res;

    res = __uhsub16(val1,val2); /* res[15:0] = (val1[15:0] + val2[15:0]) >> 1
                                   res[31:16] = (val1[31:16] - val2[31:16]) >> 1
                                 */
    return res;
}