/*
* Copyright (c) 2011-2015 EPFL DATA Laboratory
* Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
*
* All rights reserved.
*
* Licensed 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 ch.epfl.data.squall.types;
import java.util.Random;
public class DoubleType implements NumericType<Double> {
private static final long serialVersionUID = 1L;
private final Random _rnd = new Random();
@Override
public Double fromDouble(double d) {
return d;
}
@Override
public Double fromString(String str) {
return Double.valueOf(str);
}
@Override
public double getDistance(Double bigger, Double smaller) {
return bigger - smaller;
}
@Override
public Double getInitialValue() {
return 0.0;
}
@Override
public Double getMaxValue() {
return Double.MAX_VALUE;
}
@Override
public Double getMinPositiveValue() {
return Double.MIN_VALUE;
}
@Override
public Double getMinValue() {
return -1 * Double.MAX_VALUE;
}
@Override
public Double getOffset(Object base, double delta) {
return (Double) base + delta;
}
@Override
public Double minDecrement(Object obj) {
return (Double) obj - getMinPositiveValue();
}
@Override
public Double minIncrement(Object obj) {
return (Double) obj + getMinPositiveValue();
}
@Override
public double toDouble(Object obj) {
return (Double) obj;
}
// for printing(debugging) purposes
@Override
public String toString() {
return "DOUBLE";
}
@Override
public String toString(Double obj) {
return obj.toString();
}
@Override
public Double generateRandomInstance() {
return _rnd.nextDouble();
}
}