Methods
P
R
Instance Public methods
precisionless_round(precision = nil)
round(precision = nil)

Rounds the float with the specified precision.

x = 1.337
x.round    # => 1
x.round(1) # => 1.3
x.round(2) # => 1.34
Also aliased as: precisionless_round

Source: show | on GitHub 

# 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