@alcorexchange/alcor-swap-sdk/build/esm/utils/mostSignificantBit.js

​​ **npm** ``` npm i @alcorexchange/alcor-swap-sdk ``` **yarn** ``` yarn add @alcorexchange/alcor-swap-sdk ``` ## Usage ### Import:

import invariant from "tiny-invariant";
import { ZERO, MaxUint256 } from "../internalConstants";
const TWO = BigInt(2);
const POWERS_OF_2 = [128, 64, 32, 16, 8, 4, 2, 1].map(pow => [pow, TWO ** BigInt(pow)]);
export function mostSignificantBit(x) {
  invariant(x > ZERO, "ZERO");
  invariant(x <= MaxUint256, "MAX");
  let msb = 0;
  for (const [power, min] of POWERS_OF_2) {
    if (x >= min) {
      x = x >> BigInt(power);
      msb += power;
    }
  }
  return msb;
}