Editing Multiply–accumulate operation (section)

===Dot product instruction===
Some machines combine multiple fused multiply add operations into a single step, e.g. performing a four-element dot-product on two 128-bit [[Single instruction, multiple data|SIMD]] registers <code>a0×b0 + a1×b1 + a2×b2 + a3×b3</code> with single cycle throughput.