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@ -69,6 +69,8 @@ import static net.apocalypselabs.symat.Main.API_URL;
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import org.matheclipse.core.eval.EvalUtilities;
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import org.matheclipse.core.interfaces.IExpr;
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import org.matheclipse.parser.client.math.MathException;
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import org.mozilla.javascript.NativeArray;
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import org.python.core.PyList;
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/**
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* These functions are accessible from JavaScript.
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@ -244,6 +246,118 @@ public class Functions {
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return diff(function, idv);
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}
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public double[] solve(String function, String idv, String eq) {
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String res = $("Solve[" + function + "==" + eq + ", " + idv + "]");
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res = res.substring(1, res.length() - 1);
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String[] cmp = res.split(",");
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for (int i = 0; i < cmp.length; i++) {
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cmp[i] = cmp[i].replace("{" + idv + "->", "");
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cmp[i] = cmp[i].replace("}", "");
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}
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double[] out = new double[cmp.length];
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for (int i = 0; i < cmp.length; i++) {
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try {
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out[i] = Double.parseDouble(cmp[i]);
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} catch (Exception ex) {
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Debug.stacktrace(ex);
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}
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}
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return out;
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}
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public double[] solve(String function, String idv) {
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return solve(function, idv, "0");
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}
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public double[] solve(String function) {
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return solve(function, "x");
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}
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private String printa(double[] o) {
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String out = "[";
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for (int i = 0; i < o.length; i++) {
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out += o[i] + (i == o.length - 1 ? "" : ", ");
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}
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out += "]";
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return out;
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}
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private String printa(int[] o) {
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String out = "[";
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for (int i = 0; i < o.length; i++) {
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out += o[i] + (i == o.length - 1 ? "" : ", ");
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}
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out += "]";
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return out;
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}
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private String printa(boolean[] o) {
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String out = "[";
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for (int i = 0; i < o.length; i++) {
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out += (o[i] ? "true" : "false") + (i == o.length - 1 ? "" : ", ");
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}
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out += "]";
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return out;
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}
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public String printa(Object o) {
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String out = "[";
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if (o instanceof int[]) {
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int[] arr = (int[]) o;
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for (int i = 0; i < arr.length; i++) {
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out += arr[i] + (i == arr.length - 1 ? "" : ", ");
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}
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} else if (o instanceof double[]) {
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double[] arr = (double[]) o;
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for (int i = 0; i < arr.length; i++) {
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out += arr[i] + (i == arr.length - 1 ? "" : ", ");
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}
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} else if (o instanceof boolean[]) {
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double[] arr = (double[]) o;
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for (int i = 0; i < arr.length; i++) {
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out += arr[i] + (i == arr.length - 1 ? "" : ", ");
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}
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} else if (o instanceof int[][]) {
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int[][] arr = (int[][]) o;
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for (int i = 0; i < arr.length; i++) {
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out += printa(arr[i]) + (i == arr.length - 1 ? "" : ", ");
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}
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} else if (o instanceof double[][]) {
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double[][] arr = (double[][]) o;
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for (int i = 0; i < arr.length; i++) {
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out += printa(arr[i]) + (i == arr.length - 1 ? "" : ", ");
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}
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} else if (o instanceof boolean[][]) {
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boolean[][] arr = (boolean[][]) o;
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for (int i = 0; i < arr.length; i++) {
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out += printa(arr[i]) + (i == arr.length - 1 ? "" : ", ");
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}
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} else if (o instanceof NativeArray) {
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NativeArray arr = (NativeArray) o;
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for (long i = 0; i < arr.getLength(); i++) {
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out += (arr.get(i) instanceof NativeArray ? printa(arr.get(i))
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: arr.get(i).toString())
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+ (i == arr.getLength() - 1 ? "" : ", ");
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}
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} else if (o instanceof PyList) {
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PyList arr = (PyList) o;
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Object[] oo = arr.toArray();
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for (int i = 0; i < oo.length; i++) {
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out += (oo[i] instanceof Object[] ? printa(oo[i]) : oo[i].toString())
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+ (i == oo.length - 1 ? "" : ", ");
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}
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} else {
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Object[] arr = (Object[]) o;
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for (int i = 0; i < arr.length; i++) {
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out += (arr[i] instanceof Object[] ? printa(arr[i]) : arr[i].toString())
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+ (i == arr.length - 1 ? "" : ", ");
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}
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}
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out += "]";
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return out;
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}
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/**
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* Integrate the function with respect to idv.
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*
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@ -309,7 +423,8 @@ public class Functions {
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/**
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* Multiplies the given numbers together.
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*
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* @param a numbers. Calculates first * second * third, etc.
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* @param a
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* @param b
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* @return The product of the numbers or the value of input if there is only
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* one input.
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*/
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@ -339,7 +454,8 @@ public class Functions {
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/**
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* Divide the given numbers.
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*
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* @param a numbers. Calculates (first / second) / third, etc.
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* @param a
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* @param b
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* @return The quotient of the numbers or the value of input if there is
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* only one input.
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*/
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@ -369,7 +485,8 @@ public class Functions {
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/**
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* Divide the first number by the second and return the remainder.
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*
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* @param a numbers. Calculates (first mod second) mod third, etc.
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* @param a
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* @param b
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* @return The modulus of the numbers or the value of input if there is only
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* one input.
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*/
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@ -435,7 +552,7 @@ public class Functions {
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return ans.toString();
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}
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public double[][] $minvert(double a[][]) {
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public double[][] minvert(double a[][]) {
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int n = a.length;
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double x[][] = new double[n][n];
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double b[][] = new double[n][n];
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@ -659,7 +776,7 @@ public class Functions {
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* @throws net.apocalypselabs.symat.BadInputException When the matrices are
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* wrong.
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*/
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public double[][] $mtimes(double[][] a, double[][] b) throws BadInputException {
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public double[][] mtimes(double[][] a, double[][] b) throws BadInputException {
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double[][] ans = new double[a.length][b[0].length];
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double sum = 0;
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int c, d, k, m = a.length, q = b[0].length, p = b.length;
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@ -690,7 +807,7 @@ public class Functions {
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* @throws BadInputException if the matrix is not square or power is less
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* than 0
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*/
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public double[][] $mpower(double[][] a, int b) throws BadInputException {
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public double[][] mpower(double[][] a, int b) throws BadInputException {
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if (a.length != a[0].length) {
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throw new BadInputException("Matrix needs to be square.");
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}
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@ -704,7 +821,7 @@ public class Functions {
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if (i == 0) {
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ans = a;
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} else {
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ans = $mtimes(a, ans);
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ans = mtimes(a, ans);
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}
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}
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return ans;
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