doc := ComObjCreate("htmlfile")
doc.write("<meta http-equiv='X-UA-Compatible' content='IE=9'>")
mathMethods := doc.parentWindow.eval("Object.getOwnPropertyNames(Math).join('|')")

expr := "POW(2, 2) - Sqrt(16) + pi"

try res := doc.parentWindow.eval(expr)
catch {
   while RegExMatch(expr, "iO)(?<!Math\.)(" . mathMethods . ")", match, match ? match.Pos + match.Len + 5 : 1)
      expr := RegExReplace( expr, match[1], "Math." . RegExReplace(mathMethods, "i).*(" . match[1] . ").*", "$1"),,, match.Pos )
   
   try res := doc.parentWindow.eval(expr)
   catch
      res := "Expression is not supported"
}
MsgBox, % res

doc := ComObjCreate("htmlfile")
doc.write("<meta http-equiv='X-UA-Compatible' content='IE=9'>")
MsgBox, % doc.parentWindow.eval("Object.getOwnPropertyNames(Math).join('\n')")

fi=PI/3, x=sin(fi), y=cos(fi), pow(x,2)+pow(y,2)

script =
(
if (!Math.clz32) Math.clz32 = (function(log, LN2){
  return function(x) {  
    if (x == null || x === 0) {
      return 32;
    }
    return 31 - (log(x >>> 0) / LN2 | 0);
  };
})(Math.log, Math.LN2);
)
doc.write("<script>" . script . "</script>")

JS := GetJScripObject()
MsgBox, % JS.("pow(2, 10)")

GetJScripObject()  {
   VarSetCapacity(tmpFile, ((MAX_PATH := 260) - 14) << !!A_IsUnicode, 0)
   DllCall("GetTempFileName", Str, A_Temp, Str, "AHK", UInt, 0, Str, tmpFile)
   
   FileAppend,
   (
   <component>
   <public><method name='math_eval'/></public>
   <script language='JScript'></script>
   <script>with (Math) var math_eval = function (str) {return eval(str);};</script>
   </component>
   ), % tmpFile
   
   JS := ObjBindMethod( ComObjGet("script:" . tmpFile), "math_eval" )
   FileDelete, % tmpFile
   Return JS
}

#SingleInstance Force
#NoEnv
#Persistent

doc := ComObjCreate("htmlfile")

doc.write("<meta http-equiv='X-UA-Compatible' content='IE=9'>")
Maths := doc.parentWindow.eval("Object.getOwnPropertyNames(Math).join('|')")

doc.write("<script>with (Math) var math_eval = function (str) {return eval(str);};</script>")

Global EM_SETSEL := 0x00B1, EM_GETSEL := 0xB0, EM_LINEINDEX := 0xBB, ES_NOHIDESEL := 256, hEdit, doc

Load =
(
2 + 2
pow(2, 8)
asin(1)
PI
)

Gui, +Resize +LastFound
Gui, Font, s18 q5, Calibri
Gui, Margin, 0, 0
Gui, Add, Edit, hwndhEdit w300 r6 +HScroll +%ES_NOHIDESEL%, % Load
Gui, Font, s12
  ;	https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Global_Objects/Math
Gui, Add, DDL, x10 y+10 w76 gMath vMath, ()||%Maths%
Gui, Add, Button, x+10 yp hp, Copy
Gui, Add, Button, x210 yp w80 hp gEval, =
Gui, Show, , Калькулятор
Gui, +MinSize
Sleep 10
If Load is not space
	ControlSend, , {End}{Enter}, ahk_id %hEdit%
Return

GuiClose:
   ExitApp

GuiSize:
   GuiControl, Move, %hEdit%, % "w" A_GuiWidth " h" A_GuiHeight - 44 
   GuiControl, Move, Math, % "x" 10 " y" A_GuiHeight - 34
   GuiControl, MoveDraw, Button1, % "x" 96 " y" A_GuiHeight - 34
   GuiControl, MoveDraw, Button2, % "x" A_GuiWidth - 90 " y" A_GuiHeight - 34
   Return
	
Eval() {
	Focus()
   ControlGet, lineNum, CurrentLine, , , ahk_id %hEdit% 
   ControlGet, text, Line, % lineNum, , ahk_id %hEdit% 
   Equal := SubEqual(text, lineNum) 
   try res := doc.parentWindow.math_eval(text)
   catch { 
	  ToolTip("The expression does not supported") 
      Return
   }
   If res is space 
   { 
	  ToolTip("Result empty") 
      Return
   }
   res := RegExReplace(res, "\.(0+|(0*[^0]+)*\K0+)$") 
   If !Equal
		SetCarretEnd()
   Control, EditPaste, %  " = " res, , ahk_id %hEdit%
   ToolTip("Ok", 300)
   SelResult(res)
}

ButtonCopy() {
	Focus()
	ControlGet, OutputVar, Selected, , , ahk_id %hEdit%
	If OutputVar is not space
		Clipboard := OutputVar, ToolTip("Ok")
	Else
		ToolTip("No Selected")
}

Focus() {
	GuiControl, Focus, %hEdit%
}

Math:
	ControlGet, OutputVar, Selected, , , ahk_id %hEdit%
	GuiControlGet, Math 
	Focus()
	If Math = ()
	{
		Control, EditPaste, (%OutputVar%), , ahk_id %hEdit%
		Return
	}
	If Math ~= "(*UCP)[[:upper:]]"
	{
		Control, EditPaste, %Math%, , ahk_id %hEdit%
		Return
	}
	Control, EditPaste, %Math%(%OutputVar%), , ahk_id %hEdit%
	
	Sleep 10
	If OutputVar is space
		ControlSend, , {Left}, ahk_id %hEdit%
	Return 

SubEqual(ByRef text, lineNum) {
	If Pos := RegExMatch(text, "\s*=.*", Match)
	{ 
		SendMessage, EM_LINEINDEX, lineNum - 1, , , ahk_id %hEdit%
		LINEINDEX := Errorlevel - 1
		text := RegExReplace(text, "i)\Q" Match "\E", "", , Pos)
		SendMessage, EM_SETSEL, LINEINDEX + Pos, LINEINDEX + Pos + StrLen(Match), , ahk_id %hEdit% 
	}
	Return Pos
}

SetCarretEnd() {
	ControlSend, , {End}, ahk_id %hEdit% 
}

SelResult(res) {
	Static _ := VarSetCapacity(end, 4)
	Sleep 100
	SendMessage, EM_GETSEL, , &end, , ahk_id %hEdit%
	SendMessage, EM_SETSEL, NumGet(end) - StrLen(res), NumGet(end), , ahk_id %hEdit%
}

ToolTip(text, time = 500) {
	CoordMode, Mouse
	CoordMode, ToolTip
	MouseGetPos, X, Y
	ToolTip, %text%, X-10, Y-35, 20
	SetTimer, HideToolTip, -%time%
	Return 1

	HideToolTip:
		ToolTip, , , , 20
		Return
}

doc.write("<script>with (Math) var math_eval = function (str) {return eval(str);};</script>")

   try res := doc.parentWindow.math_eval(text)

cos(Math.PI)