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prevPow2

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Subhajit Sahu edited this page Aug 1, 2022 · 9 revisions

Finds previous power-of-2.

Similar: log2, pow2, isPow2, nextPow2, prevPow2.


prevPow2(x)
// x: an int32

const xinteger = require('extra-integer');


xinteger.prevPow2(63);
// → 32

xinteger.prevPow2(128);
// → 128

xinteger.prevPow2(1);
// → 1


References

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