1. The double-precision Complex-Valued Multiplier-And-Accumulator whether including four double-precision Multiplier-And-Accumulators, such as C0 double-precision multiplier, C1 double-precision multiplier, C2 double-precision multiplier, and C3 double-precision multiplier respectively; three accumulators as M1 Accumulator, M2 Accumulator, and M3 Accumulator; and four Subword Parallel single-precision Multiplier-And-Accumulators.