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-rw-r--r--src/jcgp/backend/function/DoubleArithmetic.java589
1 files changed, 589 insertions, 0 deletions
diff --git a/src/jcgp/backend/function/DoubleArithmetic.java b/src/jcgp/backend/function/DoubleArithmetic.java
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+++ b/src/jcgp/backend/function/DoubleArithmetic.java
@@ -0,0 +1,589 @@
+package jcgp.backend.function;
+
+import jcgp.backend.population.Connection;
+
+public class DoubleArithmetic extends FunctionSet {
+
+ public final static double DIVISION_LIMIT = 0.0001;
+
+ public DoubleArithmetic() {
+ name = "Double Arithmetic";
+ functionList = new Function[]{
+ new Absolute(),
+ new SquareRoot(),
+ new Reciprocal(),
+ new Sine(),
+ new Cosine(),
+ new Tangent(),
+ new Exponential(),
+ new HyperbolicSine(),
+ new HyperbolicCosine(),
+ new HyperbolicTangent(),
+ new NaturalLog(),
+ new LogBaseTen(),
+ new SineAB(),
+ new CosineAB(),
+ new Hypotenuse(),
+ new Power(),
+ new Addition(),
+ new Subtraction(),
+ new Multiplication(),
+ new Division()};
+
+ enableAll();
+ }
+
+ /**
+ * Absolute returns the positive value of input 0.
+ *
+ * @see Math.abs()
+ */
+ public static class Absolute extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.abs(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Absolute";
+ }
+ }
+
+ /**
+ * Protected square root function, returns the square root of the absolute
+ * value of input 0.
+ *
+ * @see Math.abs(), Math.sqrt()
+ */
+ public static class SquareRoot extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.sqrt(Math.abs(in0));
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Square root";
+ }
+ }
+
+ /**
+ * Protected reciprocal function, returns (1 / input 0). If input 0 is less than
+ * {@link DoubleArithmetic.}DIVISION_LIMIT, this returns it unchanged.
+ *
+ */
+ public static class Reciprocal extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return in0 < DIVISION_LIMIT ? in0 : (1 / in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Reciprocal";
+ }
+ }
+
+ /**
+ * Sine function, in radians.
+ *
+ * @see Math.sin()
+ */
+ public static class Sine extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.sin(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Sin";
+ }
+ }
+
+ /**
+ * Cosine function, in radians.
+ *
+ * @see Math.cos()
+ */
+ public static class Cosine extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.cos(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Cos";
+ }
+ }
+
+ /**
+ * Protected tangent function, in radians. Returns the tangent of input 0.
+ * If input 0 is less than {@link DoubleArithmetic.}DIVISION_LIMIT,
+ * this returns it unchanged.
+ *
+ * @see Math.tan()
+ */
+ public static class Tangent extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return in0 < DIVISION_LIMIT ? in0 : Math.tan(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Tan";
+ }
+ }
+
+ /**
+ * Exponential function. Returns the exponential of input 0.
+ *
+ * @see Math.exp()
+ */
+ public static class Exponential extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.exp(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Exp";
+ }
+ }
+
+ /**
+ * Returns the hyperbolic sine of input 0.
+ *
+ * @see Math.sinh()
+ */
+ public static class HyperbolicSine extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.sinh(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Sinh";
+ }
+ }
+
+ /**
+ * Returns the hyperbolic cosine of input 0.
+ *
+ * @see Math.cosh()
+ */
+ public static class HyperbolicCosine extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.cosh(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Cosh";
+ }
+ }
+
+ /**
+ * Returns the hyperbolic tangent of input 0.
+ *
+ * @see Math.tanh()
+ */
+ public static class HyperbolicTangent extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return Math.tanh(in0);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Tanh";
+ }
+ }
+
+ /**
+ * Protected natural log function. Returns the natural log of the absolute
+ * value of input 0. If input 0 is less than {@link DoubleArithmetic.}DIVISION_LIMIT,
+ * this returns it unchanged.
+ *
+ * @see Math.log(), Math.abs()
+ */
+ public static class NaturalLog extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return in0 < DIVISION_LIMIT ? in0 : Math.log(Math.abs(in0));
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Ln";
+ }
+ }
+
+ /**
+ * Protected log base 10 function. Returns the log to base 10 the absolute
+ * value of input 0. If input 0 is less than {@link DoubleArithmetic.}DIVISION_LIMIT,
+ * this returns it unchanged.
+ *
+ * @see Math.log10(), Math.abs()
+ */
+ public static class LogBaseTen extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ return in0 < DIVISION_LIMIT ? in0 : Math.log10(Math.abs(in0));
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 1;
+ }
+
+ @Override
+ public String getName() {
+ return "Log";
+ }
+ }
+
+ /**
+ * Sine of sum. Returns the sine of the sum of inputs 0 and 1.
+ *
+ * @see Math.sin()
+ */
+ public static class SineAB extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+ return Math.sin(in0 + in1);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Sin(a+b)";
+ }
+ }
+
+ /**
+ * Cosine of sum. Returns the cosine of the sum of inputs 0 and 1.
+ *
+ * @see Math.cos()
+ */
+ public static class CosineAB extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+ return Math.cos(in0 + in1);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Cos(a+b)";
+ }
+ }
+
+ /**
+ * Hypotenuse function. Returns the square root of input 0 squared
+ * plus input 1 squared.
+ *
+ * @see Math.hypot()
+ */
+ public static class Hypotenuse extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+ return Math.hypot(in0, in1);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Hypotenuse";
+ }
+ }
+
+ /**
+ * Power function. Returns the absolute value of input 0 to the power of input 1.
+ *
+ * @see Math.abs(), Math.pow
+ */
+ public static class Power extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+ return Math.pow(Math.abs(in0), in1);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Power";
+ }
+ }
+
+ /**
+ * Addition returns the sum of inputs 0 and 1.
+ *
+ */
+ public static class Addition extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+ return in0 + in1;
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Addition";
+ }
+ }
+
+ /**
+ * Subtraction returns the difference between inputs 0 and 1.
+ *
+ */
+ public static class Subtraction extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+ return in0 - in1;
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Subtraction";
+ }
+ }
+
+ /**
+ * Multiplication returns the product of inputs 0 and 1.
+ *
+ */
+ public static class Multiplication extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+ return in0 * in1;
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Multiplication";
+ }
+ }
+
+ /**
+ * Protected division, returns the quotient of input 0 (the dividend) and input 1 (the divisor).
+ * If the divisor is less than {@link DoubleArithmetic.}DIVISION_LIMIT, this returns the it unchanged.
+ *
+ */
+ public static class Division extends Function {
+ @Override
+ public Double run(Connection... connections) {
+ if (connections.length < getArity()) {
+ throw new IllegalArgumentException(getName() + " received " + connections.length + " connections but arity is " + getArity() + ".");
+ } else {
+ Double in0 = ((Double) connections[0].getValue());
+ Double in1 = ((Double) connections[1].getValue());
+
+ return in1 < DIVISION_LIMIT ? in0 : (in0 / in1);
+ }
+ }
+
+ @Override
+ public int getArity() {
+ return 2;
+ }
+
+ @Override
+ public String getName() {
+ return "Division";
+ }
+ }
+}
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