ARITHMETIC PROCESSING DEVICE AND METHOD OF CONTROLLING ARITHMETIC PROCESSING DEVICE

摘要

An arithmetic processing device includes: a first memory configured to store values of a first coefficient of a logarithmic function, where the logarithmic function is decomposed into a series operation term and the coefficient term, depending on respective values of a first bit group included in operand data of a first instruction to calculate the value of the first coefficient; a second memory configured to store values of a second coefficient included in the series operation term depending on the respective values of the first bit group included in operand data of a second instruction to calculate the value of the second coefficient; and a selector configured to select the value of the first coefficient read from the first memory based on the execution of the first instruction and select the value of the second coefficient read from the second memory based on the execution of the second instruction.

主权项

1. An arithmetic processing device comprising:
a first memory configured to store values of a first coefficient of a logarithmic function where the logarithmic function is decomposed into a series operation term and the coefficient term for the series operation term depending on respective values of a first bit group included in operand data of a first instruction to calculate the value of the first coefficient; a second memory configured to store values of a second coefficient included in the series operation term depending on the respective values of the first bit group included in operand data of a second instruction to calculate the value of the second coefficient; and a selector, coupled to the first memory and the second memory, configured to select the value of the first coefficient read from the first memory based on an execution of the first instruction and select the value of the second coefficient read from the second memory based on an execution of the second instruction.