first commit

hrmsEjb/org/nfunk/jep/function/Multiply.java

@@ -0,0 +1,68 @@
+package org.nfunk.jep.function;
+
+import java.util.Stack;
+import java.util.Vector;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.type.Complex;
+
+public class Multiply extends PostfixMathCommand {
+  public void run(Stack paramStack) throws ParseException {
+    checkStack(paramStack);
+    Object object = paramStack.pop();
+    for (byte b = 1; b < this.curNumberOfParameters; b++) {
+      Object object1 = paramStack.pop();
+      object = mul(object1, object);
+    } 
+    paramStack.push(object);
+  }
+  
+  public Object mul(Object paramObject1, Object paramObject2) throws ParseException {
+    if (paramObject1 instanceof Complex) {
+      if (paramObject2 instanceof Complex)
+        return mul((Complex)paramObject1, (Complex)paramObject2); 
+      if (paramObject2 instanceof Number)
+        return mul((Complex)paramObject1, (Number)paramObject2); 
+      if (paramObject2 instanceof Vector)
+        return mul((Vector)paramObject2, (Complex)paramObject1); 
+    } else if (paramObject1 instanceof Number) {
+      if (paramObject2 instanceof Complex)
+        return mul((Complex)paramObject2, (Number)paramObject1); 
+      if (paramObject2 instanceof Number)
+        return mul((Number)paramObject1, (Number)paramObject2); 
+      if (paramObject2 instanceof Vector)
+        return mul((Vector)paramObject2, (Number)paramObject1); 
+    } else if (paramObject1 instanceof Vector) {
+      if (paramObject2 instanceof Complex)
+        return mul((Vector)paramObject1, (Complex)paramObject2); 
+      if (paramObject2 instanceof Number)
+        return mul((Vector)paramObject1, (Number)paramObject2); 
+    } 
+    throw new ParseException("Invalid parameter type");
+  }
+  
+  public Double mul(Number paramNumber1, Number paramNumber2) {
+    return new Double(paramNumber1.doubleValue() * paramNumber2.doubleValue());
+  }
+  
+  public Complex mul(Complex paramComplex1, Complex paramComplex2) {
+    return paramComplex1.mul(paramComplex2);
+  }
+  
+  public Complex mul(Complex paramComplex, Number paramNumber) {
+    return paramComplex.mul(paramNumber.doubleValue());
+  }
+  
+  public Vector mul(Vector paramVector, Number paramNumber) {
+    Vector vector = new Vector();
+    for (byte b = 0; b < paramVector.size(); b++)
+      vector.addElement(mul(paramVector.elementAt(b), paramNumber)); 
+    return vector;
+  }
+  
+  public Vector mul(Vector paramVector, Complex paramComplex) {
+    Vector vector = new Vector();
+    for (byte b = 0; b < paramVector.size(); b++)
+      vector.addElement(mul(paramComplex, paramVector.elementAt(b))); 
+    return vector;
+  }
+}