first commit

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

@@ -0,0 +1,24 @@
+package org.nfunk.jep.function;
+
+import java.util.Stack;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.type.Complex;
+
+public class ArcSineH extends PostfixMathCommand {
+  public void run(Stack paramStack) throws ParseException {
+    checkStack(paramStack);
+    Object object = paramStack.pop();
+    paramStack.push(asinh(object));
+  }
+  
+  public Object asinh(Object paramObject) throws ParseException {
+    if (paramObject instanceof Complex)
+      return ((Complex)paramObject).asinh(); 
+    if (paramObject instanceof Number) {
+      double d1 = ((Number)paramObject).doubleValue();
+      double d2 = Math.log(d1 + Math.sqrt(d1 * d1 + 1.0D));
+      return new Double(d2);
+    } 
+    throw new ParseException("Invalid parameter type");
+  }
+}