The refactored ternary - IEEE 754

refactored-ternary.js

function isSpecialCase(exponent, bias) {
  return exponent == (bias << 1) + 1
}

function handleSpecialCases(significand, signal) {
  if (significand) {
    return NaN;
  } else if (signal) {
    return -Infinity;
  } else {
    return +Infinity;
  }
}


function calculateNumberFromComponents(exponent, bias, significand) {
  if (exponent) {
    return Math.pow(2, exponent - bias) * (1 + significand);
  } else {
    return Math.pow(2, -bias + 1) * significand;
  }
}

function applySignalToAbsoluteValue(signal, absoluteValue) {
  return absoluteValue * (1 + signal * (-2));
}

function convertIEEE754ToNumber(bias, significand, signal, exponent) {
  if (isSpecialCase(exponent, bias)) {
    return handleSpecialCases(significand, signal);
  } else {
    let absoluteValue = 0;

    if (exponent || significand) {
      absoluteValue = calculateNumberFromComponents(exponent, bias, significand);
    }

    return applySignalToAbsoluteValue(signal, absoluteValue);
  }
}