/**
* Fills a portion of the given big array with the given value.
*
* <p>If possible (i.e., <code>from</code> is 0) this method uses a backward loop. In this case,
* it is significantly faster than the corresponding method in {@link java.util.Arrays}.
*
* @param array a big array.
* @param from the starting index of the portion to fill.
* @param to the end index of the portion to fill.
* @param value the new value for all elements of the specified portion of the big array.
*/
public static void fill(final boolean[][] array, final long from, long to, final boolean value) {
final long length = length(array);
BigArrays.ensureFromTo(length, from, to);
int fromSegment = segment(from);
int toSegment = segment(to);
int fromDispl = displacement(from);
int toDispl = displacement(to);
if (fromSegment == toSegment) {
BooleanArrays.fill(array[fromSegment], fromDispl, toDispl, value);
return;
}
if (toDispl != 0) BooleanArrays.fill(array[toSegment], 0, toDispl, value);
while (--toSegment > fromSegment) BooleanArrays.fill(array[toSegment], value);
BooleanArrays.fill(array[fromSegment], fromDispl, SEGMENT_SIZE, value);
}
/**
* Ensures that a range given by its first (inclusive) and last (exclusive) elements fits a big
* array.
*
* <p>This method may be used whenever a big array range check is needed.
*
* @param a a big array.
* @param from a start index (inclusive).
* @param to an end index (inclusive).
* @throws IllegalArgumentException if <code>from</code> is greater than <code>to</code>.
* @throws ArrayIndexOutOfBoundsException if <code>from</code> or <code>to</code> are greater than
* the big array length or negative.
*/
public static void ensureFromTo(final boolean[][] a, final long from, final long to) {
BigArrays.ensureFromTo(length(a), from, to);
}