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A comment on Building Your Own Efficient uint128 in C++. Parent comment

Re:Building Your Own Efficient uint128 in C++ by bsder on Monday February 02, 2026 @12:17AM (#46852699)
Intersection calculations from computational geometry. Intersection calculations generally require about 2*n+log2(n) bits.

If you like your CAD accurate, you have to operate in integer space.

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