@extra-integer/prev-pow-2

Finds previous power-of-2.

Usage no npm install needed!

<script type="module">
  import extraIntegerPrevPow2 from 'https://cdn.skypack.dev/@extra-integer/prev-pow-2';
</script>

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

This is part of package extra-integer.

integer.prevPow2(x);
// x: an int32

const integer = require("extra-integer");

integer.prevPow2(63);
// 32

integer.prevPow2(128);
// 128

integer.prevPow2(1);
// 1