io.druid.query.aggregation.histogram.BufferUtils Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package io.druid.query.aggregation.histogram;
import java.nio.DoubleBuffer;
import java.nio.FloatBuffer;
public class BufferUtils
{
public static int binarySearch(DoubleBuffer buf, int minIndex, int maxIndex, double value)
{
while (minIndex < maxIndex) {
int currIndex = (minIndex + maxIndex - 1) >>> 1;
double currValue = buf.get(currIndex);
int comparison = Double.compare(currValue, value);
if (comparison == 0) {
return currIndex;
}
if (comparison < 0) {
minIndex = currIndex + 1;
} else {
maxIndex = currIndex;
}
}
return -(minIndex + 1);
}
public static int binarySearch(FloatBuffer buf, int minIndex, int maxIndex, float value)
{
while (minIndex < maxIndex) {
int currIndex = (minIndex + maxIndex - 1) >>> 1;
float currValue = buf.get(currIndex);
int comparison = Float.compare(currValue, value);
if (comparison == 0) {
return currIndex;
}
if (comparison < 0) {
minIndex = currIndex + 1;
} else {
maxIndex = currIndex;
}
}
return -(minIndex + 1);
}
}