SIMD sum of product arithmetic method and circuit, and semiconductor integrated circuit device equipped with the SIMD sum of product arithmetic circuit

摘要

In an SIMD sum of product arithmetic method of enabling a concurrent execution of 2n (where n is a natural number) parallel sum of product arithmetic (operations), the SIMD sum of product arithmetic is executed using 2^m (m=0, . . . , log₂ n) accumulators as one set, and by replacing a 2p−1th accumulator with an adjacent 2pth (p=1, . . . , n/2) accumulator, without changing a sequence of accumulator addresses, in the set, as accumulator addresses to be allocated to sum of product arithmetic circuits for the SIMD sum of product arithmetic.