### Can AHK do simple maths programs?

Posted:

**31 May 2018, 12:34**I'd like to make a basic math windows script 100/(A/B+1) into which I can quickly type in values and get a result.

Thanks.

Thanks.

Let's help each other out

https://www.autohotkey.com:443/boards/

https://www.autohotkey.com:443/boards/viewtopic.php?f=76&t=49908

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Posted: **31 May 2018, 12:34**

I'd like to make a basic math windows script 100/(A/B+1) into which I can quickly type in values and get a result.

Thanks.

Thanks.

Posted: **31 May 2018, 13:13**

Yep, it sure can.

Posted: **31 May 2018, 18:34**

Code: Select all

```
A := 100
B := 2
Result := 100/(A/B+1)
MsgBox % Result
```

Code: Select all

```
InputBox n ,,,,,,,,,, 2*PI
MsgBox % Eval(n)
ExitApp
;MsgBox % Eval("PI") . "`n" . Eval("2>3") . "`n" . Eval("3>2") . "`n" . Eval("abs(-100)*2+50") . "`n" . Eval("143**143")
Eval(Expression)
{
Expression := RegExReplace(Expression, "\s")
Expression := StrReplace(Expression, ",", ".")
Expression := RegExReplace(StrReplace(Expression, "**", "^"), "(\w+(\.*\d+)?)\^(\w+(\.*\d+)?)", "pow($1,$3)") ; 2**3 -> 2^3 -> pow(2,3)
;Expression := StrReplace(Expression, "PI", ACos(-1))
Expression := RegExReplace(Expression, "=+", "==") ; = -> == | === -> == | ==== -> == | ..
Expression := RegExReplace(Expression, "\b(E|LN2|LN10|LOG2E|LOG10E|PI|SQRT1_2|SQRT2)\b", "Math.$1")
Expression := RegExReplace(Expression, "\b(abs|acos|asin|atan|atan2|ceil|cos|exp|floor|log|max|min|pow|random|round|sin|sqrt|tan)\b\(", "Math.$1(")
(o := ComObjCreate("HTMLfile")).write("<body><script>document.body.innerText=eval('" . Expression . "');</script>")
o := StrReplace(StrReplace(StrReplace(InStr(o:=o.body.innerText, "body") ? "" : o, "false", 0), "true", 1), "undefined", "")
Return o ;InStr(o, "e") ? Format("{:f}", o) : o
} ; https://autohotkey.com/boards/viewtopic.php?f=6&t=15389
```

Posted: **01 Jun 2018, 13:44**

There is a pretty slick way to handle this using an ActiveX control that already knows how to evaluate math expressions that are represented as a string.daithy wrote:I'd like to make a basic math windows script 100/(A/B+1) into which I can quickly type in values and get a result.

Thanks.

Code: Select all

```
Gui, Add, ActiveX, vpwb, Shell.Explorer
pwb.Navigate("about:<!DOCTYPE HTML><meta http-equiv=""X-UA-Compatible"" content=""IE=Edge"">")
Math := pwb.Document.parentWindow
MsgBox, % Math.Eval("2+3")
A := 100
B := 2
MsgBox, % Math.Eval(100/(A/B+1)) ; this is actually being evaluate by AHK and is not a good example as pointed out by Flipeador
Exp = 100/(%A%/%B%+1)
MsgBox, % Exp " = " Math.Eval(Exp)
```

Posted: **01 Jun 2018, 13:56**

I think it should be Math.Eval("100/(" . A . "/" . B . "+1)") instead of Math.Eval(100/(A/B+1)).FanaticGuru wrote:There is a pretty slick way to handle this using an ActiveX control that already knows how to evaluate math expressions.

interesting way to do it

Posted: **01 Jun 2018, 13:58**

Yea, right after I posted, I noticed I did not do very good examples. Editted while you were posting to do better. But hopefully I got the basic technique across.Flipeador wrote:I think it should be Math.Eval("100/(" . A . "/" . B . "+1)") instead of Math.Eval(100/(A/B+1)).There is a pretty slick way to handle this using an ActiveX control that already knows how to evaluate math expressions.

interesting way to do it

You can pass the ActiveX a totally math expression string but you can not pass it an AHK variable in a string. Any AHK variables have to be resolved by AHK before sending the math expression string to the ActiveX control.

FG