method

round

v3.0.0 - Show latest stable - 0 notes - Class: Float

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What's this?

round(precision = nil) public

Rounds the float with the specified precision.

  x = 1.337
  x.round    # => 1
  x.round(1) # => 1.3
  x.round(2) # => 1.34

Show source

# File activesupport/lib/active_support/core_ext/float/rounding.rb, line 11
  def round(precision = nil)
    if precision
      magnitude = 10.0 ** precision
      (self * magnitude).round / magnitude
    else
      precisionless_round
    end
  end

round

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