public static void DbFunctions_ATAN() { DbFunctionTools tools = new DbFunctionTools(); Random rnd = new Random(); //Double. { Console.WriteLine("Testing DbFunctions.ATAN(Double)..."); double input = rnd.NextDouble(); if (input < 0.5) { input = input * -1d; } List <DbValue> args = new List <DbValue>(); args.Add(tools.AllocValue(input)); DbFunctionArguments fargs = new DbFunctionArguments(args); DbValue valOutput = DbFunctions.ATAN(tools, fargs); ByteSlice bs = valOutput.Eval(); double output = tools.GetDouble(bs); double expected = Math.Atan(input); if (expected != output) { throw new Exception("DbFunctions.ATAN(Double) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString()); } else { Console.WriteLine("Expected results received."); } } { Console.WriteLine("Testing DbFunctions.ATAN(Int32)..."); int input = rnd.Next(Int32.MinValue, Int32.MaxValue); List <DbValue> args = new List <DbValue>(); args.Add(tools.AllocValue(input)); DbFunctionArguments fargs = new DbFunctionArguments(args); DbValue valOutput = DbFunctions.ATAN(tools, fargs); ByteSlice bs = valOutput.Eval(); double output = tools.GetDouble(bs); double expected = Math.Atan((double)input); if (Double.IsNaN(output) && Double.IsNaN(expected)) { Console.WriteLine("Expected results received."); } else { if (expected != output) { throw new Exception("DbFunctions.ATAN(Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString()); } else { Console.WriteLine("Expected results received."); } } } { Console.WriteLine("Testing DbFunctions.ATAN(Long)..."); long input = DateTime.Now.Ticks; List <DbValue> args = new List <DbValue>(); args.Add(tools.AllocValue(input)); DbFunctionArguments fargs = new DbFunctionArguments(args); DbValue valOutput = DbFunctions.ATAN(tools, fargs); ByteSlice bs = valOutput.Eval(); double output = tools.GetDouble(bs); double expected = Math.Atan((double)input); if (Double.IsNaN(output) && Double.IsNaN(expected)) { Console.WriteLine("Expected results received."); } else { if (expected != output) { throw new Exception("DbFunctions.ATAN(Int32) has failed. Expected result: " + expected.ToString() + ", but received: " + output.ToString()); } else { Console.WriteLine("Expected results received."); } } } }