New functiones are _Cosh(), _Sinh(), _Tanh() and "improved" one is _ATan2(). I actually followed UDF standards this time. Updated post, 23rd October 2008 - functions covered: _ATan2(), _Cosh(), _Frexp(), _Hypot(), _Ldexp(), _Logb(), _Sinh(), _Tanh() - two versions posted. One using msvcrt.dll and the other using autoits bilt-in functions and operators. Using msvcrt.dll: ; #FUNCTION# ;=============================================================================== ; ; Name...........: _ATan