Fuente: Wipo "digitalization" An arithmetic processor includes a plurality of arithmetic circuits that individually execute an arithmetic operation for fixed point data; and at least one of first and second statistical information is acquired regarding a plurality of fixed point data that are results of arithmetic operation executed by the plurality of arithmetic circuits. The first statistical information is obtained by accumulating a bit pattern, which is obtained by setting a flag bit to each of bit positions corresponding to a range from a least-significant-bit position to a highest-order bit position for each of the digits corresponding to the bit positions, and the second statistical information is obtained by accumulating a bit pattern, which is obtained by setting a flag bit to each of bit positions corresponding to a range from the position of the sign bit to a lowest-order-bit position for each of the digits corresponding to the bit positions.