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1. (WO2013145276) ARITHMETIC PROCESSING UNIT AND METHOD FOR CONTROLLING ARITHMETIC PROCESSING UNIT

Pub. No.:    WO/2013/145276    International Application No.:    PCT/JP2012/058646
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 31 01:59:59 CEST 2012
IPC: G06F 7/556
Applicants: FUJITSU LIMITED
富士通株式会社
HONDOU, Mikio
本藤 幹雄
Inventors: HONDOU, Mikio
本藤 幹雄
Title: ARITHMETIC PROCESSING UNIT AND METHOD FOR CONTROLLING ARITHMETIC PROCESSING UNIT
Abstract:
An arithmetic processing unit having: an exponential generator (20) for generating, on the basis of a first part of input data to be inputted, an exponential part of a coefficient expressed using a floating-point number format when separating an exponential function into a progression operation and a coefficient for the progression operation; a storage unit (21) for storing the mantissa part of the coefficient; a constant generator (20) for reading out, from the storage unit, constant data corresponding to a second part of the input data; and a selection unit (23) for selecting and outputting constant data from the constant generator when a command to be executed is a coefficient calculation command for calculating the coefficient of the exponential function.