Async math computing

.classpath

@@ -8,6 +8,7 @@
 	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>

pom.xml

@@ -7,6 +7,17 @@
     <version>1.0-SNAPSHOT</version>
     <name>WarpPI Calculator</name>
     <url>http://warp.ovh</url>
+	<repositories>
+		<repository>
+			<id>oss-snapshots-repo</id>
+			<name>Sonatype OSS Maven Repository</name>
+			<url>https://oss.sonatype.org/content/groups/public</url>
+			<snapshots>
+				<enabled>true</enabled>
+				<updatePolicy>always</updatePolicy>
+			</snapshots>
+		</repository>
+	</repositories>
     <dependencies>
         <dependency>
             <groupId>junit</groupId>
@@ -32,7 +43,7 @@
         <dependency>
             <groupId>com.pi4j</groupId>
             <artifactId>pi4j-core</artifactId>
-            <version>1.1</version>
+            <version>1.2-SNAPSHOT</version>
         </dependency>
 		<dependency>
 		    <groupId>org.fusesource.jansi</groupId>

src/main/java/org/warp/picalculator/TestGPU.java

@@ -142,11 +142,11 @@ public class TestGPU {
 			this.d = d;
 			r = d.getRenderer();
 
-			exampleFont = d.loadFont("ex");
+			exampleFont = d.loadFont("norm");
 
 			exampleSkin = d.loadSkin("skin.png");
 
-			BlockContainer.initializeFonts(d.loadFont("ex"), d.loadFont("big"));
+			BlockContainer.initializeFonts(d.loadFont("norm"), d.loadFont("smal"));
 
 			//New expression framework test
 			c = new NormalInputContainer(new InputContext(), false, 0, 200);

src/main/java/org/warp/picalculator/Utils.java

@@ -535,7 +535,7 @@ public class Utils {
 		return realbytes;
 	}
 
-	public static boolean allSolved(List<Function> expressions) throws Error {
+	public static boolean allSolved(List<Function> expressions) throws Error, InterruptedException {
 		for (final Function itm : expressions) {
 			if (itm.isSimplified() == false) {
 				return false;

src/main/java/org/warp/picalculator/gui/DisplayManager.java

@@ -237,10 +237,10 @@ public final class DisplayManager implements RenderingLoop {
 
 	private void load_fonts() throws IOException {
 		fonts = new BinaryFont[7];
-		fonts[0] = engine.loadFont("big");
-		fonts[1] = engine.loadFont("small");
-		fonts[2] = engine.loadFont("ex");
-		fonts[3] = engine.loadFont("big");
+		fonts[0] = engine.loadFont("smal");
+		fonts[1] = engine.loadFont("smallest");
+		fonts[2] = engine.loadFont("norm");
+		fonts[3] = engine.loadFont("smal");
 		//4
 		//fonts[5] = engine.loadFont("square");
 	}

src/main/java/org/warp/picalculator/gui/expression/blocks/BlockParenthesisAbstract.java

@@ -46,8 +46,13 @@ public abstract class BlockParenthesisAbstract extends Block {
 		}
 		r.glDrawCharLeft(x + prw, y, '╭');
 		r.glDrawCharLeft(x + prw, y + height - chh, '╰');
-		r.glFillColor(x + prw + 3, y + 6, 2, height - 6 * 2);
-		r.glFillColor(x + width - 5, y + 6, 2, height - 6 * 2);
+		if (small) {
+			r.glFillColor(x + prw + 1, y + 5, 1, height - 4 * 2);
+			r.glFillColor(x + width - 3, y + 5, 1, height - 4 * 2);
+		} else {
+			r.glFillColor(x + prw + 3, y + 6, 2, height - 6 * 2);
+			r.glFillColor(x + width - 5, y + 6, 2, height - 6 * 2);
+		}
 		r.glDrawCharLeft(x + width - chw, y, '╮');
 		r.glDrawCharLeft(x + width - chw, y + height - chh, '╯');
 		containerNumber.draw(ge, r, x + prw + chw, y, caret);

src/main/java/org/warp/picalculator/gui/screens/MathInputScreen.java

@@ -38,11 +38,19 @@ import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 
 public class MathInputScreen extends Screen {
 
+	private static final BinaryFont fontBig = Utils.getFont(false);
+	
 	public MathContext calc;
 	public InputContext ic;
 	public InputContainer userInput;
 	public OutputContainer result;
 	public int errorLevel = 0; // 0 = nessuno, 1 = risultato, 2 = tutto
+	private boolean computingResult = false;
+	private Thread computingThread;
+	private int computingAnimationIndex = 0;
+	private double computingAnimationElapsedTime = 0;
+	private double computingElapsedTime = 0;
+	private boolean computingBreakTipVisible = false;
 	boolean mustRefresh = true;
 
 	public MathInputScreen() {
@@ -56,7 +64,7 @@ public class MathInputScreen extends Screen {
 		calc = new MathContext();
 
 		try {
-			BlockContainer.initializeFonts(DisplayManager.INSTANCE.engine.loadFont("ex"), DisplayManager.INSTANCE.engine.loadFont("big"));
+			BlockContainer.initializeFonts(DisplayManager.INSTANCE.engine.loadFont("norm"), DisplayManager.INSTANCE.engine.loadFont("smal"));
 		} catch (final IOException e) {
 			e.printStackTrace();
 			System.exit(1);
@@ -75,7 +83,6 @@ public class MathInputScreen extends Screen {
 
 	@Override
 	public void beforeRender(float dt) {
-
 		if (DisplayManager.INSTANCE.error == null) {
 			DisplayManager.INSTANCE.renderer.glClearColor(0xFFc5c2af);
 		} else {
@@ -84,9 +91,53 @@ public class MathInputScreen extends Screen {
 		if (userInput.beforeRender(dt)) {
 			mustRefresh = true;
 		}
+		if (computingResult) {
+			computingElapsedTime += dt;
+			computingAnimationElapsedTime+=dt;
+			if (computingAnimationElapsedTime > 0.1) {
+				computingAnimationElapsedTime -= 0.1;
+				computingAnimationIndex = (computingAnimationIndex + 1) % 16;
+				mustRefresh = true;
+			}
+			if (computingElapsedTime > 5) {
+				computingBreakTipVisible = true;
+			} 
+		} else {
+			computingElapsedTime = 0;
+			computingAnimationElapsedTime = 0;
+			computingAnimationIndex = 0;
+			computingBreakTipVisible = false;
+		}
 	}
+	@Override
+	public void render() {
+		final Renderer renderer = DisplayManager.INSTANCE.renderer;
+		fontBig.use(DisplayManager.INSTANCE.engine);
+		final int textColor = 0xFF000000;
+		final int padding = 4;
+		renderer.glColor(textColor);
 
-	private static final BinaryFont fontBig = Utils.getFont(false);
+		userInput.draw(DisplayManager.INSTANCE.engine, renderer, padding, padding + 20);
+
+		if (computingResult) {
+			renderer.glColor3f(1, 1, 1);
+			final int leftX = 208;
+			final int leftY = 16;
+			final int size = 32;
+			final int posY = computingAnimationIndex % 2;
+			final int posX = (computingAnimationIndex - posY) / 2;
+			renderer.glFillRect(DisplayManager.INSTANCE.engine.getWidth() - size - 4, DisplayManager.INSTANCE.engine.getHeight() - size - 4, size, size, leftX + size * posX, leftY + size * posY, size, size);
+			if (computingBreakTipVisible) {
+				Utils.getFont(false).use(DisplayManager.INSTANCE.engine);
+				renderer.glColor3f(0.75f, 0, 0);
+				renderer.glDrawStringRight(DisplayManager.INSTANCE.engine.getWidth() - 4 - size - 4, DisplayManager.INSTANCE.engine.getHeight() - size/2 - renderer.getCurrentFont().getCharacterHeight()/2 - 4, "Press (=) to stop");
+			}
+		} else {
+			if (!result.isContentEmpty()) {
+				result.draw(DisplayManager.INSTANCE.engine, renderer, DisplayManager.INSTANCE.engine.getWidth() - result.getWidth() - 2, DisplayManager.INSTANCE.engine.getHeight() - result.getHeight() - 2);
+			}
+		}
+	}
 
 	@Override
 	public void renderStatusbar() {
@@ -103,19 +154,6 @@ public class MathInputScreen extends Screen {
 		renderer.glFillRect(2 + 18 * pos + 2 * spacersNumb, 2, 16, 16, 16 * skinN, 16 * 0, 16, 16);
 	}
 
-	@Override
-	public void render() {
-		fontBig.use(DisplayManager.INSTANCE.engine);
-		final int textColor = 0xFF000000;
-		final int padding = 4;
-		DisplayManager.INSTANCE.renderer.glColor(textColor);
-
-		userInput.draw(DisplayManager.INSTANCE.engine, DisplayManager.INSTANCE.renderer, padding, padding + 20);
-
-		if (!result.isContentEmpty()) {
-			result.draw(DisplayManager.INSTANCE.engine, DisplayManager.INSTANCE.renderer, DisplayManager.INSTANCE.engine.getWidth() - result.getWidth() - 2, DisplayManager.INSTANCE.engine.getHeight() - result.getHeight() - 2);
-		}
-	}
 
 	@Override
 	public boolean mustBeRefreshed() {
@@ -188,76 +226,97 @@ public class MathInputScreen extends Screen {
 								calc.resultsCount = 0;
 								return true;
 							} else {
-								try {
-									try {
-										if (!userInput.isAlreadyParsed() && !userInput.isEmpty()) {
-											Expression expr = MathParser.parseInput(calc, userInput);
-											if (calc.f == null | calc.f2 == null) {
-												calc.f = new ObjectArrayList<>();
-												calc.f2 = new ObjectArrayList<>();
-											} else {
-												calc.f.clear();
-												calc.f2.clear();
-											}
-											calc.f.add(expr);
-											int stop = 0;
-											boolean done = false;
-											ObjectArrayList<Function> resultExpressions = new ObjectArrayList<>();
-											resultExpressions.add(expr.getParameter());
-											while (!done && stop < 3000) {
-												ObjectArrayList<Function> newResultExpressions = new ObjectArrayList<>();
-												done = true;
-												for (Function f : resultExpressions) {
-													Function newResult = null;
-													if (f.isSimplified() == false) {
-														done = false;
-														if (f instanceof Expression) {
-															ObjectArrayList<Function> fncResult = ((Expression) f).solve();
-															for (Function resultItem : fncResult) {
-																newResultExpressions.add(resultItem);
+								if (!computingResult) {
+									computingResult = true;
+									computingThread = new Thread(()-> {
+										try {
+											try {
+												if (!userInput.isAlreadyParsed() && !userInput.isEmpty()) {
+													Expression expr = MathParser.parseInput(calc, userInput);
+													if (calc.f == null | calc.f2 == null) {
+														calc.f = new ObjectArrayList<>();
+														calc.f2 = new ObjectArrayList<>();
+													} else {
+														calc.f.clear();
+														calc.f2.clear();
+													}
+													calc.f.add(expr);
+													int stop = 0;
+													boolean done = false;
+													ObjectArrayList<Function> resultExpressions = new ObjectArrayList<>();
+													resultExpressions.add(expr.getParameter());
+													while (!done && stop < 3000) {
+														if (Thread.interrupted()) throw new InterruptedException();
+														ObjectArrayList<Function> newResultExpressions = new ObjectArrayList<>();
+														done = true;
+														for (Function f : resultExpressions) {
+															if (Thread.interrupted()) throw new InterruptedException();
+															Function newResult = null;
+															if (f.isSimplified() == false) {
+																done = false;
+																if (f instanceof Expression) {
+																	ObjectArrayList<Function> fncResult = ((Expression) f).solve();
+																	for (Function resultItem : fncResult) {
+																		newResultExpressions.add(resultItem);
+																	}
+																} else {
+																	List<Function> fncResult = f.simplify();
+																	for (Function resultItem : fncResult) {
+																		newResultExpressions.add(resultItem);
+																	}
+																}
+															} else {
+																newResult = f;
 															}
-														} else {
-															List<Function> fncResult = f.simplify();
-															for (Function resultItem : fncResult) {
-																newResultExpressions.add(resultItem);
+															if (newResult != null) {
+																newResultExpressions.add(newResult);
 															}
 														}
-													} else {
-														newResult = f;
+														resultExpressions = newResultExpressions;
+														stop++;
 													}
-													if (newResult != null) {
-														newResultExpressions.add(newResult);
+													Utils.out.println(2, "INPUT: " + expr);
+													for (Function rr : resultExpressions) {
+														Utils.out.println(1, "RESULT: " + rr.toString());
 													}
+													ObjectArrayList<ObjectArrayList<Block>> resultBlocks = MathParser.parseOutput(calc, resultExpressions);
+													result.setContentAsMultipleGroups(resultBlocks);
+													//									showVariablesDialog(() -> {
+													//										currentExpression = newExpression;
+													//										simplify();
+													//									});
 												}
-												resultExpressions = newResultExpressions;
-												stop++;
+											} catch (final InterruptedException ex) {
+												Utils.out.println(Utils.OUTPUTLEVEL_DEBUG_MIN, "Computing thread stopped.");
+											} catch (final Exception ex) {
+												if (StaticVars.debugOn) {
+													ex.printStackTrace();
+												}
+												throw new Error(Errors.SYNTAX_ERROR);
 											}
-											Utils.out.println(2, "INPUT: " + expr);
-											for (Function rr : resultExpressions) {
-												Utils.out.println(1, "RESULT: " + rr.toString());
-											}
-											ObjectArrayList<ObjectArrayList<Block>> resultBlocks = MathParser.parseOutput(calc, resultExpressions);
-											result.setContentAsMultipleGroups(resultBlocks);
-											//									showVariablesDialog(() -> {
-											//										currentExpression = newExpression;
-											//										simplify();
-											//									});
+										} catch (final Error e) {
+											final StringWriter sw = new StringWriter();
+											final PrintWriter pw = new PrintWriter(sw);
+											e.printStackTrace(pw);
+											d.errorStackTrace = sw.toString().toUpperCase().replace("\t", "    ").replace("\r", "").split("\n");
+											DisplayManager.INSTANCE.error = e.id.toString();
+											System.err.println(e.id);
 										}
-									} catch (final Exception ex) {
-										if (StaticVars.debugOn) {
-											ex.printStackTrace();
-										}
-										throw new Error(Errors.SYNTAX_ERROR);
+										computingResult = false;
+									});
+									computingThread.setName("Computing Thread");
+									computingThread.setDaemon(true);
+									computingThread.setPriority(Thread.NORM_PRIORITY + 3);
+									computingThread.start();
+									return true;
+								} else {
+									if (computingThread != null) {
+										computingThread.interrupt();
+										computingResult = false;
+										return true;
 									}
-								} catch (final Error e) {
-									final StringWriter sw = new StringWriter();
-									final PrintWriter pw = new PrintWriter(sw);
-									e.printStackTrace(pw);
-									d.errorStackTrace = sw.toString().toUpperCase().replace("\t", "    ").replace("\r", "").split("\n");
-									DisplayManager.INSTANCE.error = e.id.toString();
-									System.err.println(e.id);
+									return false;
 								}
-								return true;
 							}
 						case NUM0:
 							typeChar('0');

src/main/java/org/warp/picalculator/math/Function.java

@@ -56,15 +56,17 @@ public interface Function {
 
 	/**
 	 * Simplify the current function or it's children
+	 * @throws InterruptedException 
 	 */
-	public List<Function> simplify() throws Error;
+	public List<Function> simplify() throws Error, InterruptedException;
 
 	/**
 	 * The current simplification status of this function and it's childrens
 	 * 
 	 * @return boolean
+	 * @throws InterruptedException 
 	 */
-	public boolean isSimplified();
+	public boolean isSimplified() throws InterruptedException;
 
 	/**
 	 * 

src/main/java/org/warp/picalculator/math/FunctionDynamic.java

@@ -87,8 +87,9 @@ public abstract class FunctionDynamic implements Function {
 	}
 
 	@Override
-	public boolean isSimplified() {
+	public boolean isSimplified() throws InterruptedException {
 		for (final Function variable : functions) {
+			if (Thread.interrupted()) throw new InterruptedException();
 			if (variable.isSimplified() == false) {
 				return false;
 			}
@@ -106,15 +107,17 @@ public abstract class FunctionDynamic implements Function {
 	protected abstract boolean isSolvable();
 
 	@Override
-	public final ObjectArrayList<Function> simplify() throws Error {
+	public final ObjectArrayList<Function> simplify() throws Error, InterruptedException {
 		boolean solved = true;
 		final Function[] fncs = getParameters();
 		for (final Function f : fncs) {
+			if (Thread.interrupted()) throw new InterruptedException();
 			if (f.isSimplified() == false) {
 				solved = false;
 				break;
 			}
 		}
+		if (Thread.interrupted()) throw new InterruptedException();
 		ObjectArrayList<Function> result = solved ? solve() : null;
 
 		if (result == null || result.isEmpty()) {
@@ -123,6 +126,7 @@ public abstract class FunctionDynamic implements Function {
 			final ObjectArrayList<ObjectArrayList<Function>> ln = new ObjectArrayList<>();
 			for (final Function fnc : fncs) {
 				final ObjectArrayList<Function> l = new ObjectArrayList<>();
+				if (Thread.interrupted()) throw new InterruptedException();
 				if (fnc.isSimplified()) {
 					l.add(fnc);
 				} else {
@@ -148,8 +152,9 @@ public abstract class FunctionDynamic implements Function {
 	 * @return The solved function.
 	 * @throws Error
 	 *             Errors during computation, like a/0 or similar.
+	 * @throws InterruptedException 
 	 */
-	protected abstract ObjectArrayList<Function> solve() throws Error;
+	protected abstract ObjectArrayList<Function> solve() throws Error, InterruptedException;
 
 	@Override
 	public MathContext getMathContext() {

src/main/java/org/warp/picalculator/math/FunctionOperator.java

@@ -113,7 +113,8 @@ public abstract class FunctionOperator implements Function {
 	}
 
 	@Override
-	public boolean isSimplified() {
+	public boolean isSimplified() throws InterruptedException {
+		if (Thread.interrupted()) throw new InterruptedException();
 		return (parameter1.isSimplified() & parameter2.isSimplified()) ? !isSolvable() : false;
 	}
 
@@ -123,12 +124,15 @@ public abstract class FunctionOperator implements Function {
 	 * 
 	 * @return <strong>true</strong> if this function can be solved, otherwise
 	 *         <strong>false</strong>.
+	 * @throws InterruptedException 
 	 */
-	protected abstract boolean isSolvable();
+	protected abstract boolean isSolvable() throws InterruptedException;
 
 	@Override
-	public final ObjectArrayList<Function> simplify() throws Error {
+	public final ObjectArrayList<Function> simplify() throws Error, InterruptedException {
+		if (Thread.interrupted()) throw new InterruptedException();
 		final boolean solved = parameter1.isSimplified() & parameter2.isSimplified();
+		if (Thread.interrupted()) throw new InterruptedException();
 		ObjectArrayList<Function> result = solved ? solve() : null;;
 
 		if (result == null || result.isEmpty()) {
@@ -136,14 +140,18 @@ public abstract class FunctionOperator implements Function {
 
 			final ObjectArrayList<Function> l1 = new ObjectArrayList<>();
 			final ObjectArrayList<Function> l2 = new ObjectArrayList<>();
+			if (Thread.interrupted()) throw new InterruptedException();
 			if (parameter1.isSimplified()) {
 				l1.add(parameter1);
 			} else {
+				if (Thread.interrupted()) throw new InterruptedException();
 				l1.addAll(parameter1.simplify());
 			}
+			if (Thread.interrupted()) throw new InterruptedException();
 			if (parameter2.isSimplified()) {
 				l2.add(parameter2);
 			} else {
+				if (Thread.interrupted()) throw new InterruptedException();
 				l2.addAll(parameter2.simplify());
 			}
 
@@ -164,8 +172,9 @@ public abstract class FunctionOperator implements Function {
 	 * @return The solved function.
 	 * @throws Error
 	 *             Errors during computation, like a/0 or similar.
+	 * @throws InterruptedException 
 	 */
-	protected abstract ObjectArrayList<Function> solve() throws Error;
+	protected abstract ObjectArrayList<Function> solve() throws Error, InterruptedException;
 
 	@Override
 	public abstract FunctionOperator clone();

src/main/java/org/warp/picalculator/math/FunctionSingle.java

@@ -96,7 +96,7 @@ public abstract class FunctionSingle implements Function {
 	}
 
 	@Override
-	public final ObjectArrayList<Function> simplify() throws Error {
+	public final ObjectArrayList<Function> simplify() throws Error, InterruptedException {
 		final boolean simplified = parameter.isSimplified();
 		ObjectArrayList<Function> result = simplified ? solve() : null;
 
@@ -125,11 +125,12 @@ public abstract class FunctionSingle implements Function {
 	 * @return The solved function.
 	 * @throws Error
 	 *             Errors during computation, like a/0 or similar.
+	 * @throws InterruptedException 
 	 */
-	protected abstract ObjectArrayList<Function> solve() throws Error;
+	protected abstract ObjectArrayList<Function> solve() throws Error, InterruptedException;
 
 	@Override
-	public boolean isSimplified() {
+	public boolean isSimplified() throws InterruptedException {
 		return parameter.isSimplified() ? !isSolvable() : false;
 	}
 
@@ -139,8 +140,9 @@ public abstract class FunctionSingle implements Function {
 	 * 
 	 * @return <strong>true</strong> if this function can be solved, otherwise
 	 *         <strong>false</strong>.
+	 * @throws InterruptedException 
 	 */
-	protected abstract boolean isSolvable();
+	protected abstract boolean isSolvable() throws InterruptedException;
 
 	@Override
 	public abstract FunctionSingle clone();

src/main/java/org/warp/picalculator/math/functions/Division.java

@@ -27,7 +27,7 @@ public class Division extends FunctionOperator {
 	}
 
 	@Override
-	protected boolean isSolvable() {
+	protected boolean isSolvable() throws InterruptedException {
 		final Function variable1 = getParameter1();
 		final Function variable2 = getParameter2();
 		if (FractionsRule1.compare(this)) {
@@ -75,7 +75,7 @@ public class Division extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		final Function variable1 = getParameter1();
 		final Function variable2 = getParameter2();
 		ObjectArrayList<Function> result = new ObjectArrayList<>();

src/main/java/org/warp/picalculator/math/functions/Expression.java

@@ -549,7 +549,8 @@ public class Expression extends FunctionSingle {
 	}
 
 	@Override
-	protected boolean isSolvable() {
+	protected boolean isSolvable() throws InterruptedException {
+		if (Thread.interrupted()) throw new InterruptedException();
 		final Function f = getParameter();
 		if (f.isSimplified() == false) {
 			return true;
@@ -559,7 +560,8 @@ public class Expression extends FunctionSingle {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
+		if (Thread.interrupted()) throw new InterruptedException();
 		final ObjectArrayList<Function> ret = new ObjectArrayList<>();
 		if (getParameter().isSimplified() || !parenthesisNeeded()) {
 			ret.add(getParameter());

src/main/java/org/warp/picalculator/math/functions/Multiplication.java

@@ -29,7 +29,7 @@ public class Multiplication extends FunctionOperator {
 	}
 
 	@Override
-	protected boolean isSolvable() {
+	protected boolean isSolvable() throws InterruptedException {
 		final Function variable1 = getParameter1();
 		final Function variable2 = getParameter2();
 		if (variable1 instanceof Number & variable2 instanceof Number) {
@@ -60,7 +60,7 @@ public class Multiplication extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		ObjectArrayList<Function> result = new ObjectArrayList<>();
 		if (NumberRule1.compare(this)) {
 			result = NumberRule1.execute(this);

src/main/java/org/warp/picalculator/math/functions/Number.java

@@ -72,11 +72,12 @@ public class Number implements Function {
 		return ret;
 	}
 
-	public Number pow(Number f) throws Error {
+	public Number pow(Number f) throws Error, InterruptedException {
 		Number ret = new Number(root, BigDecimal.ONE);
 		if (Utils.isIntegerValue(f.term)) {
 			final BigInteger bi = f.term.toBigInteger().abs();
 			for (BigInteger i = BigInteger.ZERO; i.compareTo(bi) < 0; i = i.add(BigInteger.ONE)) {
+				if (Thread.interrupted()) throw new InterruptedException();
 				ret = ret.multiply(new Number(root, getTerm()));
 			}
 			if (f.term.signum() == -1) {

src/main/java/org/warp/picalculator/math/functions/Power.java

@@ -57,7 +57,7 @@ public class Power extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		final ObjectArrayList<Function> result = new ObjectArrayList<>();
 		if (UndefinedRule1.compare(this)) {
 			result.addAll(UndefinedRule1.execute(this));

src/main/java/org/warp/picalculator/math/functions/Root.java

@@ -43,7 +43,7 @@ public class Root extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		final ObjectArrayList<Function> result = new ObjectArrayList<>();
 		if (mathContext.exactMode) {
 			if (parameter1 instanceof Number && ((Number) parameter1).equals(new Number(mathContext, 2))) {

src/main/java/org/warp/picalculator/math/functions/RootSquare.java

@@ -40,7 +40,7 @@ public class RootSquare extends FunctionSingle {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		final ObjectArrayList<Function> result = new ObjectArrayList<>();
 		if (mathContext.exactMode) {
 			Number exponent = new Number(mathContext, BigInteger.ONE);

src/main/java/org/warp/picalculator/math/functions/Subtraction.java

@@ -25,7 +25,7 @@ public class Subtraction extends FunctionOperator {
 	}
 
 	@Override
-	protected boolean isSolvable() {
+	protected boolean isSolvable() throws InterruptedException {
 		if (parameter1 instanceof Number & parameter2 instanceof Number) {
 			return true;
 		}
@@ -57,7 +57,7 @@ public class Subtraction extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		ObjectArrayList<Function> result = new ObjectArrayList<>();
 		if (VariableRule1.compare(this)) {
 			result = VariableRule1.execute(this);

src/main/java/org/warp/picalculator/math/functions/Sum.java

@@ -27,7 +27,7 @@ public class Sum extends FunctionOperator {
 	}
 
 	@Override
-	protected boolean isSolvable() {
+	protected boolean isSolvable() throws InterruptedException {
 		if (parameter1 instanceof Number & parameter2 instanceof Number) {
 			return true;
 		}
@@ -56,7 +56,7 @@ public class Sum extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		if (parameter1 == null || parameter2 == null) {
 			throw new Error(Errors.SYNTAX_ERROR);
 		}

src/main/java/org/warp/picalculator/math/functions/SumSubtraction.java

@@ -42,7 +42,7 @@ public class SumSubtraction extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		if (parameter1 == null || parameter2 == null) {
 			throw new Error(Errors.SYNTAX_ERROR);
 		}

src/main/java/org/warp/picalculator/math/functions/equations/Equation.java

@@ -32,7 +32,7 @@ public class Equation extends FunctionOperator {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		if (parameter1 == null || parameter2 == null) {
 			throw new Error(Errors.SYNTAX_ERROR);
 		}

src/main/java/org/warp/picalculator/math/functions/equations/EquationsSystem.java

@@ -36,7 +36,7 @@ public class EquationsSystem extends FunctionDynamic {
 	}
 
 	@Override
-	public ObjectArrayList<Function> solve() throws Error {
+	public ObjectArrayList<Function> solve() throws Error, InterruptedException {
 		final ObjectArrayList<Function> ret = new ObjectArrayList<>();
 		if (functions.length == 1) {
 			if (functions[0].isSimplified()) {

src/main/java/org/warp/picalculator/math/rules/FractionsRule11.java

@@ -17,7 +17,7 @@ import it.unimi.dsi.fastutil.objects.ObjectArrayList;
  */
 public class FractionsRule11 {
 
-	public static boolean compare(Function f) {
+	public static boolean compare(Function f) throws InterruptedException {
 		final Division fnc = (Division) f;
 		Function a;
 		Function c;

src/main/java/org/warp/picalculator/math/rules/FractionsRule12.java

@@ -17,7 +17,7 @@ import it.unimi.dsi.fastutil.objects.ObjectArrayList;
  */
 public class FractionsRule12 {
 
-	public static boolean compare(Function f) {
+	public static boolean compare(Function f) throws InterruptedException {
 		final Division fnc = (Division) f;
 		Function a;
 		Function c;

src/main/java/org/warp/picalculator/math/rules/FractionsRule14.java

@@ -16,7 +16,7 @@ import it.unimi.dsi.fastutil.objects.ObjectArrayList;
  */
 public class FractionsRule14 {
 
-	public static boolean compare(Function f) {
+	public static boolean compare(Function f) throws InterruptedException {
 		final Multiplication fnc = (Multiplication) f;
 		Function a;
 		Function b;

src/main/java/org/warp/picalculator/math/rules/methods/DivisionRule1.java

@@ -18,11 +18,11 @@ import it.unimi.dsi.fastutil.objects.ObjectArrayList;
  */
 public class DivisionRule1 {
 
-	public static boolean compare(Division f) {
+	public static boolean compare(Division f) throws InterruptedException {
 		return f.getParameter1().isSimplified() && f.getParameter2().isSimplified() && (f.getParameter1() instanceof Multiplication || f.getParameter2() instanceof Multiplication) && getFirstWorkingDivisionCouple(getDivisionElements(f)) != null;
 	}
 
-	public static ObjectArrayList<Function> execute(Division f) throws Error {
+	public static ObjectArrayList<Function> execute(Division f) throws Error, InterruptedException {
 		System.out.println(f);
 		final MathContext root = f.getMathContext();
 		Function result;
@@ -73,10 +73,11 @@ public class DivisionRule1 {
 	}
 
 	@SuppressWarnings("unchecked")
-	private static ObjectArrayList<Function>[] getDivisionElements(Division division) {
+	private static ObjectArrayList<Function>[] getDivisionElements(Division division) throws InterruptedException {
 		final ObjectArrayList<Function> elementsNumerator = new ObjectArrayList<>();
 		Function numMult = division.getParameter1();
 		while (numMult instanceof Multiplication) {
+			if (Thread.interrupted()) throw new InterruptedException();
 			elementsNumerator.add(((Multiplication) numMult).getParameter1());
 			numMult = ((Multiplication) numMult).getParameter2();
 		}
@@ -85,6 +86,7 @@ public class DivisionRule1 {
 		final ObjectArrayList<Function> elementsDenominator = new ObjectArrayList<>();
 		Function denomMult = division.getParameter2();
 		while (denomMult instanceof Multiplication) {
+			if (Thread.interrupted()) throw new InterruptedException();
 			elementsDenominator.add(((Multiplication) denomMult).getParameter1());
 			denomMult = ((Multiplication) denomMult).getParameter2();
 		}
@@ -93,7 +95,7 @@ public class DivisionRule1 {
 		return new ObjectArrayList[] { elementsNumerator, elementsDenominator };
 	}
 
-	private static int[] getFirstWorkingDivisionCouple(ObjectArrayList<Function>[] elements) {
+	private static int[] getFirstWorkingDivisionCouple(ObjectArrayList<Function>[] elements) throws InterruptedException {
 		final int[] size = new int[] { elements[0].size(), elements[1].size() };
 		Function a;
 		Function b;
@@ -103,6 +105,7 @@ public class DivisionRule1 {
 		for (int i = 0; i < size[0]; i++) {
 			a = elements[0].get(i);
 			for (int j = 0; j < size[1]; j++) {
+				if (Thread.interrupted()) throw new InterruptedException();
 				b = elements[1].get(j);
 				Function testFunc;
 				testFunc = new Division(a.getMathContext(), a, b);

src/main/java/org/warp/picalculator/math/rules/methods/MultiplicationMethod1.java

@@ -17,11 +17,11 @@ import it.unimi.dsi.fastutil.objects.ObjectArrayList;
  */
 public class MultiplicationMethod1 {
 
-	public static boolean compare(Function f) {
+	public static boolean compare(Function f) throws InterruptedException {
 		return ((Multiplication) f).getParameter1().isSimplified() && ((Multiplication) f).getParameter2().isSimplified() && !(((Multiplication) f).getParameter1() instanceof Number && ((Multiplication) f).getParameter2() instanceof Number) && getFirstWorkingMultiplicationCouple(getMultiplicationElements(f)) != null;
 	}
 
-	public static ObjectArrayList<Function> execute(Function f) throws Error {
+	public static ObjectArrayList<Function> execute(Function f) throws Error, InterruptedException {
 		Function result;
 		final MathContext root = f.getMathContext();
 		final ObjectArrayList<Function> elements = getMultiplicationElements(f);
@@ -32,6 +32,7 @@ public class MultiplicationMethod1 {
 		final int size = elements.size();
 		Function prec = new Multiplication(root, elem1, elem2);
 		for (int i = size - 1; i >= 0; i--) {
+			if (Thread.interrupted()) throw new InterruptedException();
 			if (i != workingElementCouple[0] & i != workingElementCouple[1]) {
 				final Function a = prec;
 				final Function b = elements.get(i);
@@ -46,9 +47,10 @@ public class MultiplicationMethod1 {
 		return results;
 	}
 
-	private static ObjectArrayList<Function> getMultiplicationElements(Function mult) {
+	private static ObjectArrayList<Function> getMultiplicationElements(Function mult) throws InterruptedException {
 		final ObjectArrayList<Function> elements = new ObjectArrayList<>();
 		while (mult instanceof Multiplication) {
+			if (Thread.interrupted()) throw new InterruptedException();
 			elements.add(((Multiplication) mult).getParameter1());
 			mult = ((Multiplication) mult).getParameter2();
 		}
@@ -56,7 +58,7 @@ public class MultiplicationMethod1 {
 		return elements;
 	}
 
-	private static int[] getFirstWorkingMultiplicationCouple(ObjectArrayList<Function> elements) {
+	private static int[] getFirstWorkingMultiplicationCouple(ObjectArrayList<Function> elements) throws InterruptedException {
 		final int size = elements.size();
 		Function a;
 		Function b;
@@ -70,6 +72,7 @@ public class MultiplicationMethod1 {
 		for (int i = 0; i < size; i++) {
 			a = elements.get(i);
 			for (int j = 0; j < size; j++) {
+				if (Thread.interrupted()) throw new InterruptedException();
 				b = elements.get(j);
 				if (i != j) {
 					Function testFunc;

src/main/java/org/warp/picalculator/math/rules/methods/SumMethod1.java

@@ -22,12 +22,12 @@ import it.unimi.dsi.fastutil.objects.ObjectArrayList;
  */
 public class SumMethod1 {
 
-	public static boolean compare(Function f) {
+	public static boolean compare(Function f) throws InterruptedException {
 		final MathContext root = f.getMathContext();
 		return (f instanceof Sum || f instanceof Subtraction) && ((FunctionOperator) f).getParameter1().isSimplified() && ((FunctionOperator) f).getParameter2().isSimplified() && !(((FunctionOperator) f).getParameter1() instanceof Number && ((FunctionOperator) f).getParameter2() instanceof Number) && getFirstWorkingSumCouple(root, getSumElements(f)) != null;
 	}
 
-	public static ObjectArrayList<Function> execute(Function f) throws Error {
+	public static ObjectArrayList<Function> execute(Function f) throws Error, InterruptedException {
 		Function result;
 		final MathContext root = f.getMathContext();
 		final ObjectArrayList<Function> elements = getSumElements(f);
@@ -39,6 +39,7 @@ public class SumMethod1 {
 		Function prec = new Sum(root, elem1, elem2);
 		for (int i = size - 1; i >= 0; i--) {
 			if (i != workingElementCouple[0] & i != workingElementCouple[1]) {
+				if (Thread.interrupted()) throw new InterruptedException();
 				final Function a = prec;
 				final Function b = elements.get(i);
 				if (b instanceof Negative) {
@@ -60,10 +61,11 @@ public class SumMethod1 {
 		return results;
 	}
 
-	private static ObjectArrayList<Function> getSumElements(Function sum) {
+	private static ObjectArrayList<Function> getSumElements(Function sum) throws InterruptedException {
 		final MathContext root = sum.getMathContext();
 		final ObjectArrayList<Function> elements = new ObjectArrayList<>();
 		while (sum instanceof Sum || sum instanceof Subtraction) {
+			if (Thread.interrupted()) throw new InterruptedException();
 			if (sum instanceof Sum) {
 				elements.add(((FunctionOperator) sum).getParameter2());
 			} else {
@@ -75,7 +77,7 @@ public class SumMethod1 {
 		return elements;
 	}
 
-	private static int[] getFirstWorkingSumCouple(MathContext root, ObjectArrayList<Function> elements) {
+	private static int[] getFirstWorkingSumCouple(MathContext root, ObjectArrayList<Function> elements) throws InterruptedException {
 		final int size = elements.size();
 		Function a;
 		Function b;
@@ -85,6 +87,7 @@ public class SumMethod1 {
 		for (int i = 0; i < size; i++) {
 			a = elements.get(i);
 			for (int j = 0; j < size; j++) {
+				if (Thread.interrupted()) throw new InterruptedException();
 				b = elements.get(j);
 				if (i != j) {
 					Function testFunc;