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单词 Ceiling
释义

ceiling


The ceiling of a real number is the smallest integer greater than or equal to the number. The ceiling of x is usually denoted by x.

Some examples:6.2=7, 0.4=1, 7=7, -5.1=-5, π=4, -4=-4.

Note that this function is not the integer part ([x]), since3.5=4 and [3.5]=3.

The notation for floor and ceiling was introduced by Iverson in 1962[1].

References

  • 1 N. Higham, Handbook of writing for the mathematical sciences, Society for Industrial and Applied Mathematics, 1998.
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更新时间:2025/5/4 16:33:45