@@ -0,0 +1,50 @@ """ Calculate `factorial` using the decimal module.
- 2024-06-14: Michael Droettboom copied this from Modules/_decimal/tests/bench.py in the CPython source and adapted to use pyperf. """
# Original copyright notice in CPython source:
# # Copyright (C) 2001-2012 Python Software Foundation. All Rights Reserved. # Modified and extended by Stefan Krah. #

import decimal

import pyperf

def factorial(n, m): if n > m: return factorial(m, n) elif m == 0: return 1 elif n == m: return n else: return factorial(n, (n + m) // 2) * factorial((n + m) // 2 + 1, m)

def bench_decimal_factorial(): c = decimal.getcontext() c.prec = decimal.MAX_PREC c.Emax = decimal.MAX_EMAX c.Emin = decimal.MIN_EMIN
for n in [10000, 100000]: # C version of decimal _ = factorial(decimal.Decimal(n), 0)

if __name__ == "__main__": runner = pyperf.Runner() runner.metadata["description"] = "decimal_factorial benchmark"
args = runner.parse_args() runner.bench_func("decimal_factorial", bench_decimal_factorial)