setDoubleAt method
Implementation
@override
void setDoubleAt(double value, int index) {
var bytes = ByteConversionUtilities.bytesFromDouble64(value,
endian: Endian.big, doSigned: true);
data.set(bytes[0], index);
data.set(bytes[1], index + 1);
data.set(bytes[2], index + 2);
data.set(bytes[3], index + 3);
data.set(bytes[4], index + 4);
data.set(bytes[5], index + 5);
data.set(bytes[6], index + 6);
data.set(bytes[7], index + 7);
}