V2EX rounding

Rounding

释义 Definition

“Rounding” 常指四舍五入/取整:把数字用更简单、更“整”的形式表示(如按个位、十位、小数点后若干位进行近似)。在一般语境中也可指把某物弄圆、使边角变圆

例句 Examples

Round 3.14159 to two decimal places by rounding.
把 3.14159 四舍五入到小数点后两位。

The report used rounding to simplify the figures, but the small differences accumulated and affected the final total.
报告为了简化数据使用了四舍五入,但这些微小差异累积后影响了最终总计。

发音 Pronunciation (IPA)

/rand/

词源 Etymology

“Rounding” 来自动词 round(使成圆形;使变得“整”),其核心概念是“圆/整”。在数学与统计中,“把数变整”与“使形状变圆”在概念上相通:都强调去掉尖角或细节,以获得更简洁的形式。

相关词 Related Words

文学与著作中的用例 Literary Works

  • The Art of Computer Programming(Donald E. Knuth)讨论数值计算与误差时会涉及 rounding 与舍入误差。
  • Concrete Mathematics(Graham, Knuth, Patashnik)在取整函数、近似与离散数学推导中常出现 rounding 相关表述。
  • Numerical Recipes(Press 等)讲解数值方法时会谈到 rounding error(舍入误差)与浮点数计算影响。
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