Machine epsilon

（重定向自Machine precision）

Machine epsilon gives an upper bound on the relative error due to rounding in floating point arithmetic. This value characterizes computer arithmetic in the field of numerical analysis, and by extension in the subject of computational science. The quantity is also called macheps or unit roundoff, and it has the symbols Greek epsilon $\epsilon$ or bold Roman u, respectively.

单词	Machine precision
释义	Machine precision 英语百科 Machine epsilon （重定向自Machine precision） Machine epsilon gives an upper bound on the relative error due to rounding in floating point arithmetic. This value characterizes computer arithmetic in the field of numerical analysis, and by extension in the subject of computational science. The quantity is also called macheps or unit roundoff, and it has the symbols Greek epsilon $\epsilon$ or bold Roman u, respectively.
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