core/static/exp.js

  1. /**
  2.  * Calculates the exponential function with base E.
  3.  * @memberof Complex
  4.  * @static
  5.  * @param {Complex} num - Exponent
  6.  * @returns {Complex} The value of E to the power of num
  7.  */
  8. function exp(num) {
  9.   if (!(num instanceof this)) {
  10.     return this.NaN;
  11.   }
  12.   const re = num.getReal();
  13.   const theta = num.getImaginary();
  14.   const r = Math.exp(re);
  15.   return new this(
  16.     r * Math.cos(theta),
  17.     r * Math.sin(theta),
  18.   );
  19. }
  21. module.exports = exp;