boring-math-integer-math 0.8.1

Integer Mathematics

Boring Math Library - Integer math package

Package of Python integer math libraries.

• Number theory: bm.integer_math.num_theory
• Combinatorics: bm.integer_math.combinatorics

This project is part of the Boring Math boring.math namespace project.

Repos and Documentation

Repositories

• boring_math-integer-math project on PyPI
• Source code on GitHub

Detailed documentation

• Detailed API documentation on GH-Pages

Modules

Number Theory Module

• Number Theory
  • function gcd(int, int) -> int
    • greatest common divisor of two integers
    • always returns a non-negative number greater than 0
  • function lcm(int, int) -> int
    • least common multiple of two integers
    • always returns a non-negative number greater than 0
  • function coprime(int, int) -> tuple(int, int)
    • make 2 integers coprime by dividing out gcd
    • preserves signs of original numbers
  • function iSqrt(int) -> int
    • integer square root
    • same as math.isqrt
  • function isSqr(int) -> bool
    • returns true if integer argument is a perfect square
  • function primes(start: int, end: int) -> Iterator[int]
    • now using Wilson's Theorem
  • function legendre_symbol(a: int, p: int) ->datastructures int
    • where p > 2 is a prime number
  • function jacobi_symbol(a: int, n: int) -> int
    • where n > 0

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Combinatorics Module

• Combinatorics
  • function comb(n: int, m: int) -> int
    • returns number of combinations of n items taken m at a time
    • pure Python implementation of math.comb
      • reasonably performant
  • function perm(n: int, m: int) -> int
    • returns number of permutations of n items taken m at a time
    • pure Python implementation of math.perm
      • about 5x slower than math.perm
      • keeping around for PyPy 3.12+

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