functions exp.ts

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  import { IComplex, IComplexConstructor } from '../internal/complex';
import mask from '../internal/mask';
import getImag from '../methods/getImag';
import getReal from '../methods/getReal';
 
export default function exp<T extends IComplex> (Complex: IComplexConstructor<T>, z: IComplex | number, i = 0): T {
  let zReal: number;
  let zImag: number;
 
  if (typeof z === 'number') {
    zReal = z;
    zImag = i;
  } else {
    zReal = getReal(z);
    zImag = getImag(z);
  }
 
  return new Complex(
    NaN,
    NaN,
    Math.exp(zReal),
    zImag,
    mask.HAS_POLAR
  );
}