@techreport{weko_30055_1,
   author	 = "山下,真一郎",
   title	 = "計算桁数と精度の関係について",
   year 	 = "1989",
   institution	 = "富士通株式会社",
   number	 = "105(1989-HPC-031)",
   month	 = "dec"
}