Fix underflow in IsPowerOfTwo #39

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estensen wants to merge 1 commit into protolambda:master from estensen:estensen/underflow

estensen commented Nov 29, 2023

For v = 0 the v-1 value will underflow to 18446744073709551615
Then 0000...0000 & 1111...1111 == 0


          Fix underflow in IsPowerOfTwo

d557910

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