shift-divmod 0.0.1

PURPOSE

This implement faster divmod() (and mod()) for moduli with trailing 0 bits.

INSTALLATION

pip3 install shift_divmod

USAGE

from shift_divmod import ShiftDivMod

base = 997
shift = 1200
modder = ShiftDivMod(base, shift)
# Or use:
# modder = ShiftDivMod.from_int(base << shift)

# same as divmod(x, (base << shift))
print( modder.divmod(x) )

NOTES

This was proposed as a proof-of-concept for a potential improvement for the built in cpython3 operations here: https://bugs.python.org/issue41487 but was rejected. COPYRIGHT ——— Copyright © 2020, Shlomi Fish. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

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3. Neither the name of the author of this software nor the names of contributors to this software may be used to endorse or promote products derived from this software without specific prior written consent.

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