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Author SHA1 Message Date
Stefan Harmuth
e06e536292 math: MAXINT* constants 2024-12-07 06:41:16 +01:00
Stefan Harmuth
dd39c90f13 math.magnitude(): return order of magnitude of a number 2024-12-07 06:35:55 +01:00
1 changed files with 12 additions and 0 deletions
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src/tools/math.py
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@ -4,6 +4,14 @@ from decimal import Decimal, ROUND_HALF_UP
from typing import Iterable from typing import Iterable
MAXINT32 = 2**32
MAXINT64 = 2**64
MAXINT32_SIGNED = 2**31
MAXINT64_SIGNED = 2**63
MAXINT32_UNSIGNED = MAXINT32
MAXINT64_UNSIGNED = MAXINT64
def round_half_up(number: int | float) -> int: def round_half_up(number: int | float) -> int:
"""pythons round() rounds .5 to the *even* number; 0.5 == 0""" """pythons round() rounds .5 to the *even* number; 0.5 == 0"""
return int(Decimal(number).to_integral(ROUND_HALF_UP)) return int(Decimal(number).to_integral(ROUND_HALF_UP))
@ -26,3 +34,7 @@ def mul(ints: Iterable[int]) -> int:
ret *= x ret *= x
return ret return ret
def magnitude(value: int | float) -> int:
return math.floor(math.log10(value))