isSigned method

bool isSigned({
  1. int? subfieldIndex,
  2. String? subfieldName,
})

Implementation

bool isSigned({int? subfieldIndex, String? subfieldName}) {
  Subfield? subfield;
  if (subfieldIndex != null) {
    subfield = getSubfieldByIndex(subfieldIndex);
  } else if (subfieldName != null) {
    subfield = getSubfieldByName(subfieldName);
  }
  final int t = subfield == null ? type : subfield.type;
  return Fit.baseType[t & Fit.baseTypeNumMask].isSigned;
}