erfc function

double erfc(double x)

Calculates the complementary error function.

Implementation

double erfc(double x) {
  if (x == 0) {
    return 1;
  }

  if (double.infinity == x) {
    return 0;
  }

  if (double.negativeInfinity == x) {
    return 2;
  }

  if (double.nan.compareTo(x) == 0) {
    return double.nan;
  }

  return _erfImp(x, true);
}