数值修约规则的简化  

Simplification of the rounding rule for numberical value

作　　者：张英 任旺 陈彤 黄生田 Zhang Ying;Ren Wang;Chen Tong;Huang Sheng-tian(College of Chemistry and Environmental Engineering,Sichuan University of Science and Engineering,Zigong Sichuan,643000;College of Educational and Psychological Sciences,Sichuan University of Science and Engineering,Zigong Sichuan,643000)

机构地区：[1]四川轻化工大学化学与环境工程学院,四川自贡643000 [2]四川轻化工大学教育与心理科学学院,四川自贡643000

出　　处：《化学传感器》2024年第1期49-52,共4页Chemical Sensors

基　　金：四川轻化工大学2023年教改项目(JG-2370)。

摘　　要：该文分析指出数值修约中的数值存在三级结构。分析了数值三级结构中的关键数字和性质,指出数值结构越复杂,关键数字就会越多,进舍条件也就越复杂。该文创造性提出了数值的二级结构,在分析了“拟舍去数字”整体性和大小性质的基础上,解决了“拟舍去数字”作为整体与5进行比较的问题,并通过重新定义尾数,简化了进舍规则。新规则具有组成要素要点少、逻辑关系简单、语言工整等特点。This paper points out that there is a tertiary structure in numerical values,and the key numbers and properties of rounding rule in the tertiary structure are analyzed.On the basis of the integrity and value properties of the quasi-omit digits,the secondary structure of the numerical value is creatively putted forward to avoid comparing"quasi-omit number"as a whole with 5.The rounding rule is simplified by redefining mantissa.The new rule is of few elements,few points,simple logical relations,and neat language.

关 键 词：数值修约规则 简化 尾数 

分 类 号：O241[理学—计算数学]