first commit

hrmsEjb/org/nfunk/jep/function/Not.java

@@ -0,0 +1,17 @@
+package org.nfunk.jep.function;
+
+import java.util.Stack;
+import org.nfunk.jep.ParseException;
+
+public class Not extends PostfixMathCommand {
+  public void run(Stack paramStack) throws ParseException {
+    checkStack(paramStack);
+    Number number = (Number)paramStack.pop();
+    if (number instanceof Number) {
+      boolean bool = (((Number)number).doubleValue() == 0.0D) ? true : false;
+      paramStack.push(new Double(bool));
+    } else {
+      throw new ParseException("Invalid parameter type");
+    } 
+  }
+}