factorials.py
No OneTemporary
Actions

Subscribers

None

File Metadata

	# Copyright (C) 2018 by the RROMPy authors
	#
	# This file is part of RROMPy.
	#
	# RROMPy is free software: you can redistribute it and/or modify
	# it under the terms of the GNU Lesser General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.
	#
	# RROMPy 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 Lesser General Public License for more details.
	#
	# You should have received a copy of the GNU Lesser General Public License
	# along with RROMPy. If not, see <http://www.gnu.org/licenses/>.
	#

	from numpy import prod
	from scipy.special import binom, factorial
	from rrompy.utilities.base.types import List

	__all__ = ['multibinom', 'multifactorial']

	def multibinom(x:List[int], y:List[int]) -> int:
	if not hasattr(x, "__len__"): x = [x]
	if not hasattr(y, "__len__"): y = [y]
	return int(prod([binom(a, b) for (a, b) in zip(x, y)]))

	def multifactorial(x:List[int]) -> int:
	if not hasattr(x, "__len__"): x = [x]
	return int(prod([factorial(a) for a in x]))