#   pyRCV2: Preferential vote counting
#   Copyright © 2020  Lee Yingtong Li (RunasSudo)
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU Affero General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU Affero General Public License for more details.
#
#   You should have received a copy of the GNU Affero General Public License
#   along with this program.  If not, see <https://www.gnu.org/licenses/>.

class Rational:
	"""
	Wrapper for BigRational.js (rational arithmetic)
	"""
	
	def __init__(self, val):
		self.impl = bigRat(val)
	
	def pp(self, dp):
		"""Pretty print to specified number of decimal places"""
		return self.impl.valueOf().toFixed(dp)
	
	def __add__(self, other):
		return Rational(self.impl.add(other.impl))
	def __sub__(self, other):
		return Rational(self.impl.subtract(other.impl))
	def __mul__(self, other):
		return Rational(self.impl.multiply(other.impl))
	def __div__(self, other):
		return Rational(self.impl.divide(other.impl))
	
	def __gt__(self, other):
		return self.impl.greater(other.impl)
	def __ge__(self, other):
		return self.impl.greaterOrEquals(other.impl)
	def __lt__(self, other):
		return self.impl.lesser(other.impl)
	def __le__(self, other):
		return self.impl.lesserOrEquals(other.impl)
	
	def __floor__(self):
		return Rational(self.impl.floor())