set method
Implementation
void set(int index, double e0, double e1, double e2, double e3) {
if (index >= 0 && index < _count) {
final index0 = index * bytesPerElement;
data[index0] = e0;
data[index0 + 1] = e1;
data[index0 + 2] = e2;
data[index0 + 3] = e3;
}
}