Added BigUInt::factorial - #229
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pierwill
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Feb 2, 2022
Co-authored-by: pierwill <19642016+pierwill@users.noreply.github.com>
Rudxain
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Jul 11, 2026
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| // usize::MAX! > 2**usize::MAX, so just error w/o running the system out of memory | ||
| match self.to_usize() { |
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The growth of x! is similar to x**x, so the input should be constrained to less than half the bit-width (usize::MAX.isqrt()) or 1 << (usize::BITS / 2)))
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