Legacy Documentation

The Mathematical ExplorerTM (2001)

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Round

  • Round[ x ] gives the integer closest to x.
  • Mathematical function (see Section A.3.10).
  • Examples: Round[2.4] ; Round[2.6] ; Round[-2.4] ; Round[-2.6] .
  • Round rounds numbers of the form x .5 toward the nearest even integer.
  • Round[ x ] returns an integer when x is any numeric quantity, whether or not it is an explicit number.
  • Example: Round[Pi^2] .
  • For exact numeric quantities, Round internally uses numerical approximations to establish its result.
  • See The Mathematica Book on the web:Section 1.1.3 and Section 3.2.2.
  • See also: IntegerPart, Floor, Ceiling, Chop.