domain property

@override List<bool Function(num)> domain

Domain of this function

Implementation

@override
List<bool Function(num)> get domain {
  if (exponent == 0) {
    throw DomainNotDefinedError.value(
        exponent, 'exponent', 'Must not be zero');
  }
  if (exponent % 2 == 1 || (1 / exponent) % 2 == 1) {
    return <bool Function(num)>[(num x) => exponent > 0 || x != 0];
  } else {
    return <bool Function(num)>[
      (num x) => x >= 0 && (exponent > 0 || x != 0)
    ];
  }
}