lib/evm/opFns.js
function (runState) {
    const [a, b] = runState.stack.popN(2)
    const r = new BN(a.lt(b) ? 1 : 0)
    runState.stack.push(r)
  }
function (runState) {
    const [a, b] = runState.stack.popN(2)
    const r = new BN(a.lt(b) ? 1 : 0)
    runState.stack.push(r)
  }
0x10 range - bit ops