abs method

@override double abs()

Return the absolute value of this complex number. Returns NaN if either real or imaginary part is NaN and double.INFINITY if neither part is NaN, but at least one part is infinite.

Implementation

@override
double abs() {
  if (isNaN) return double.nan;
  if (isInfinite) return double.infinity;

  var x = real.abs();
  var y = imaginary.abs();

  if (x > y) {
    final z = x;
    x = y;
    y = z;
  }
  if (x == 0.0) return y;
  final q = x / y;
  return y * math.sqrt(1 + q * q);
}