/**
* Increments the value at the given index by the given value.
*
* @param index the index of the value to alter
* @param val the value to be added to the index
*/
@Override
public void increment(int index, double val) {
if (index > length - 1 || index < 0)
throw new IndexOutOfBoundsException(
"Can not access an index larger then the vector or a negative index");
int location = Arrays.binarySearch(indexes, 0, used, index);
if (location < 0 && val != 0) // dont insert zeros!
insertValue(location, index, val);
else {
values[location] += val;
if (values[location] == 0.0) removeNonZero(location);
}
}
@Override
public void set(int index, double val) {
if (index > length() - 1 || index < 0)
throw new IndexOutOfBoundsException(index + " does not fit in [0," + length + ")");
clearCaches();
int insertLocation = Arrays.binarySearch(indexes, 0, used, index);
if (insertLocation >= 0) {
if (val != 0) // set it
values[insertLocation] = val;
else // shift used count and everyone over
{
removeNonZero(insertLocation);
}
} else if (val != 0) // dont insert 0s, that is stupid
insertValue(insertLocation, index, val);
}