| 摘要 |
PROBLEM TO BE SOLVED: To obtain an arithmetic operation processor which has an operation speed that is almost equal to when a buffer is inserted inside a shift circuit and can further reduce power consumption in a barrel shift circuit. SOLUTION: In a barrel shift circuit composed of a multistage selector, when data does not have to be transmitted to the selector of the next stage to an output of a selector realizing large shift, a long wire does not have to be driven other than when needed by providing a data blocking means 101 instead of a buffer, and the power consumption of the arithmetic operation processor can be reduced.
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