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spencerbyw/nIsAPowerOfTwo.js

Created June 7, 2020 19:30
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nIsAPowerOfTwo.js
function nIsAPowerOfTwo(num) {
return (Math.log2(num) % 1) === 0;
}
// > nIsAPowerOfTwo(0);
// false
// > nIsAPowerOfTwo(1);
// true
// > nIsAPowerOfTwo(2);
// true
// > nIsAPowerOfTwo(3);
// false
// > nIsAPowerOfTwo(1024);
// true
// > nIsAPowerOfTwo(3.1415926535);
// false
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