Subtracts 8-bit unsigned integer values and computes the absolute values of the differences to the corresponding bits in the destination. Then sums of the absolute differences are returned according to the bit fields in the immediate operand.
The following algorithm is performed:
i = IMM8 * 4 j = IMM8[1:0] * 4 for k := 0 to 7 d0 = abs(a[i + k + 0] - b[j + 0]) d1 = abs(a[i + k + 1] - b[j + 1]) d2 = abs(a[i + k + 2] - b[j + 2]) d3 = abs(a[i + k + 3] - b[j + 3]) r[k] = d0 + d1 + d2 + d3
a- A 128-bit vector of type
b- A 128-bit vector of type
IMM8- An 8-bit immediate operand specifying how the absolute differences are to be calculated
specify the offset for operand
[1:0]specify the offset for operand
__m128ivector containing the sums of the sets of absolute differences between both operands.