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Enable decimal benchmarks in the test suite (MANIFEST) #453

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Enable decimal benchmarks in the test suite (MANIFEST) #453

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f0bdcf3
Enable decimal benchmarks in the suite (MANIFEST)
skirpichev Jan 19, 2026
04cae25
Update pyperformance/data-files/benchmarks/MANIFEST
skirpichev Jan 19, 2026
9fb5802
Apply suggestion from @skirpichev
skirpichev Jan 20, 2026
243a809
Tune bench_decimal_factorial() to support pure-Python decimal module
skirpichev Feb 22, 2026
b1847bb
+ increase_int_max_str_digits() decorator
skirpichev Feb 22, 2026
d17e2d8
+1
skirpichev Feb 22, 2026
f1c031f
Reference related CPython issue
skirpichev Mar 13, 2026
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+ increase_int_max_str_digits() decorator
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@skirpichev
skirpichev committed Feb 22, 2026
commit b1847bb4dfaa4c429394bd56663f88b03141c19f
19 changes: 17 additions & 2 deletions pyperformance/data-files/benchmarks/bm_decimal_factorial/run_benchmark.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,8 @@
Modules/_decimal/tests/bench.py in the CPython source and adapted to use
pyperf.
- 2026-02-22: Sergey B Kirpichev adapted context settings and tested
values to support also pure-Python decimal module.
values to support also pure-Python decimal module, copy
increase_int_max_str_digits() decorator.
"""

# Original copyright notice in CPython source:
Expand All @@ -20,7 +21,7 @@
import _decimal
except ImportError:
_decimal = None

import sys

import pyperf

Expand All @@ -36,6 +37,20 @@ def factorial(n, m):
return factorial(n, (n + m) // 2) * factorial((n + m) // 2 + 1, m)


def increase_int_max_str_digits(maxdigits):
def _increase_int_max_str_digits(func, maxdigits=maxdigits):
@wraps(func)
def wrapper(*args, **kwargs):
previous_int_limit = sys.get_int_max_str_digits()
sys.set_int_max_str_digits(maxdigits)
ans = func(*args, **kwargs)
sys.set_int_max_str_digits(previous_int_limit)
return ans
return wrapper
return _increase_int_max_str_digits


@increase_int_max_str_digits(maxdigits=10000000)
def bench_decimal_factorial():
c = decimal.getcontext()
if _decimal:
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