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# frozen_string_literal: true
module Sass
module Value
# Sass's {FuzzyMath} module.
module FuzzyMath
PRECISION = 10
EPSILON = 10**(-PRECISION - 1)
INVERSE_EPSILON = 10**(PRECISION + 1)
module_function
def equals?(number1, number2)
return true if number1 == number2
(number1 - number2).abs <= EPSILON &&
(number1 * INVERSE_EPSILON).round ==
(number2 * INVERSE_EPSILON).round
end
def equals_nilable?(number1, number2)
return true if number1 == number2
return false if number1.nil? || number2.nil?
(number1 - number2).abs <= EPSILON &&
(number1 * INVERSE_EPSILON).round ==
(number2 * INVERSE_EPSILON).round
end
def less_than?(number1, number2)
number1 < number2 && !equals?(number1, number2)
end
def less_than_or_equals?(number1, number2)
number1 < number2 || equals?(number1, number2)
end
def greater_than?(number1, number2)
number1 > number2 && !equals?(number1, number2)
end
def greater_than_or_equals?(number1, number2)
number1 > number2 || equals?(number1, number2)
end
def integer?(number)
return false unless number.finite?
equals?(number, number.round)
end
def to_i(number)
integer?(number) ? number.round : nil
end
def between(number, min, max)
return min if equals?(number, min)
return max if equals?(number, max)
return number if number > min && number < max
nil
end
def assert_between(number, min, max, name)
result = between(number, min, max)
return result unless result.nil?
raise Sass::ScriptError.new("#{number} must be between #{min} and #{max}.", name)
end
def _clamp_like_css(number, lower_bound, upper_bound)
number.to_f.nan? ? lower_bound : number.clamp(lower_bound, upper_bound)
end
def _hash(number)
number&.finite? ? (number * INVERSE_EPSILON).round : number
end
end
private_constant :FuzzyMath
end
end
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