This intrinsic inserts a UHSAX instruction into the instruction stream generated by the compiler. It enables you to exchange the halfwords of the second operand, subtract the high halfwords and add the low halfwords, halving the results.

unsigned int __uhsax(unsigned int val1, unsigned int val2)

Where:

The __uhsax intrinsic returns:

Example:

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

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