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Contents
module Footing
module Numeric
# Returns a positive representation of the number.
def positive
abs
end
# Returns a negative representation of the number.
def negative
abs.flip_sign
end
# Flips the sign on the number making it either either positive or negative.
def flip_sign
self * -1
end
# Returns the percentage that this number is of the passed number.
# @example
# 8.percent_of(10) # => 80.0
# @param [Numeric] number The number to calculate the percentage with
def percent_of(number)
percent = (self.to_f / number.to_f) * 100 if number > 0
percent ||= 0.0
end
# Rounds the number to a certain number of decimal places.
# @example
# 1.784329.round_to(1) # => 1.8
# @param [Numeric] decimal_places The number of decimal places to round to
def round_to(decimal_places)
(self * 10**decimal_places).round.to_f / 10**decimal_places
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems