words method
count consecutive doubles starting at address first.
Implementation
Float64List words(int first, int count) {
final data = ByteData.sublistView(_source.read((first - 1) * 8, count * 8));
return Float64List.fromList([
for (var i = 0; i < count; i++) data.getFloat64(i * 8, _endian),
]);
}