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Open-source Java libraries, supporting generalized smart arrays and matrices with elements
of any types, including a wide set of 2D-, 3D- and multidimensional image processing
and other algorithms, working with arrays and matrices.
/*
* The MIT License (MIT)
*
* Copyright (c) 2007-2024 Daniel Alievsky, AlgART Laboratory (http://algart.net)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.algart.math.functions;
final class SelectFunc implements Func {
SelectFunc() {
}
public double get(double... x) {
return x[(int) x[0] + 1];
}
public double get() {
throw new IndexOutOfBoundsException("At least 2 arguments required");
}
public double get(double x0) {
throw new IndexOutOfBoundsException("At least 2 arguments required");
}
public double get(double x0, double x1) {
int i = (int) x0;
if (i == 0) {
return x1;
}
throw new IndexOutOfBoundsException("Illegal index " + i);
}
public double get(double x0, double x1, double x2) {
int i = (int) x0;
if (i == 0) {
return x1;
}
if (i == 1) {
return x2;
}
throw new IndexOutOfBoundsException("Illegal index " + i);
}
public double get(double x0, double x1, double x2, double x3) {
int i = (int) x0;
if (i == 0) {
return x1;
}
if (i == 1) {
return x2;
}
if (i == 2) {
return x3;
}
throw new IndexOutOfBoundsException("Illegal index " + i);
}
/**
* Returns a brief string description of this object.
*
* @return a brief string description of this object.
*/
public String toString() {
return "select function f(x0,x1,...)=x[(int)x0+1]";
}
}