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From Frédéric THOMAS <webdoubl...@hotmail.com>
Subject RE: Decimal to Hex conversion.
Date Mon, 29 Sep 2014 20:24:01 GMT
Ok, I found the problem in mine for big numbers.

@harbs, your function works for big numbers but not fractional, anyway, I didn't optimize
mine, so, I will use its recursive pattern to recode mine, thanks.

Frédéric THOMAS

> Subject: Re: Decimal to Hex conversion.
> From: harbs.lists@gmail.com
> Date: Mon, 29 Sep 2014 23:15:35 +0300
> To: users@flex.apache.org
> 
> I have TOTALLY not read this thread, but does this function do what you want?
> 
> function toHex(d) {
>     var r = d % 16;
>     var result;
>     if (d-r == 0) 
>         result = toChar(r);
>     else 
>         result = toHex( (d-r)/16 ) + toChar(r);
>     return result;
> }
> function toChar(n) {
>     const alpha = "0123456789abcdef";
>     return alpha.charAt(n);
> }
> 
> On Sep 29, 2014, at 11:03 PM, Frédéric THOMAS <webdoublefx@hotmail.com> wrote:
> 
> > Also, it seems to work for fractional small numbers, it doesn't on big one because
this function still rely on the toString(radix) method with on my windows 64 bits return a
wrong result, should a bug to be filled on Adobe or some else first can confirm those results
?
> > 
> > decimal (10) -> dec2hex -> toString(16) -> real
> > 14159265359 -> 0x34.34BF53E2D -> 0x4BF53E4F -> 0x34BF53E4F
> > 3.14159265359 -> 0x3.243F6A8885D -> 0x3.0 -> 0x3.243F6A8885A308D
> > 
> > In between I'll try to find a way to code the correct function.
> > 
> > Frédéric THOMAS
> > 
> >> From: webdoublefx@hotmail.com
> >> To: users@flex.apache.org
> >> Subject: RE: Decimal to Hex conversion.
> >> Date: Mon, 29 Sep 2014 20:34:51 +0100
> >> 
> >> Actually I wasn't sure of mathematical correctness of the solution I gave above
and I end up writing my own function for it, so, use it instead of the one I gave before:
> >> 
> >> function dec2hex(dec:Number):String {
> >>    const carryArr:Array = [];
> >>    const integerPart:int = parseInt(dec.toString(16));
> >>    const s:String = dec.toString();
> >>    const iterationMax:int = s.substr(s.indexOf(".") + 1).length;
> >>    var fractionalPart:Number = parseFloat((dec - integerPart).toFixed(iterationMax));
> >>    var product:Number;
> >> 
> >>    var hex:String = "0x" + integerPart.toString();
> >> 
> >>    if (iterationMax > 0) {
> >>        for (var i:uint = 0; i < iterationMax; i++) {
> >>            product = fractionalPart * 16;
> >>            carryArr[carryArr.length] = product.toString(16).toUpperCase();
> >>            const carry:uint = parseInt(product.toString());
> >>            fractionalPart = parseFloat((product - carry).toFixed(iterationMax));
> >>            if (fractionalPart == 0)
> >>                break;
> >>        }
> >>        hex += "." + carryArr.join("");
> >>    }
> >> 
> >>    return hex;
> >> }
> >> 
> >> You could probably optimize it but at least it returns the correct result.
> >> 
> >> Frédéric THOMAS
> >> 
> >>> From: webdoublefx@hotmail.com
> >>> To: users@flex.apache.org
> >>> Subject: RE: Decimal to Hex conversion.
> >>> Date: Mon, 29 Sep 2014 13:24:21 +0100
> >>> 
> >>> And to be sure the user is allowed to type decimals only, I would add on
key down listener a check for it like this:
> >>> 
> >>> 
> >>> 
> >>>                                  if( isNaN(Number(scaledVal.text)) ){
> >>> 
> >>>                                      scaledVal.text = scaledVal.substring(0,
str.length-1);
> >>> 
> >>>                                  }
> >>> 
> >>> Or use a preventDefault()
> >>> 
> >>> and to optimize a bit, on change, check the event is of type CHANGE before
computing.
> >>> 
> >>> HTH,
> >>> Frédéric THOMAS
> >>> 
> >>>> From: sathikeshjith@gmail.com
> >>>> Date: Mon, 29 Sep 2014 17:42:33 +0530
> >>>> Subject: Re: Decimal to Hex conversion.
> >>>> To: users@flex.apache.org
> >>>> 
> >>>> Thanks Frederic. It Worked.
> >>>> 
> >>>> --
> >>>> Regards
> >>>> Saju Thankathurai,
> >>>> 
> >>>> 
> >>>> On Mon, Sep 29, 2014 at 5:27 PM, Frédéric THOMAS <webdoublefx@hotmail.com>
> >>>> wrote:
> >>>> 
> >>>>> 
> >>>>>    hexVal.text ="0x" + scaledVal.text.split(".").map(function (item:*,
> >>>>> index:int, array:Array):String {
> >>>>>        return int(item).toString(16).toUpperCase();
> >>>>>    }).join(".");
> >>>>> 
> >>>>> Frédéric THOMAS
> >>>>> 
> >>>>>> From: miguel.cd.ferreira@hotmail.com
> >>>>>> To: users@flex.apache.org
> >>>>>> Subject: RE: Decimal to Hex conversion.
> >>>>>> Date: Mon, 29 Sep 2014 12:49:59 +0100
> >>>>>> 
> >>>>>> so int is the same!
> >>>>>> if uint is just half of int...
> >>>>>> lets say you should first read the different types but for your
try use
> >>>>> number
> >>>>>> 
> >>>>>>> From: sathikeshjith@gmail.com
> >>>>>>> Date: Mon, 29 Sep 2014 17:16:51 +0530
> >>>>>>> Subject: Re: Decimal to Hex conversion.
> >>>>>>> To: users@flex.apache.org
> >>>>>>> 
> >>>>>>> Hi,
> >>>>>>> 
> >>>>>>> I tried using int, it didnt help. Below is the demo code,
> >>>>>>> 
> >>>>>>> <?xml version="1.0" encoding="utf-8"?>
> >>>>>>> <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
> >>>>>>>   xmlns:s="library://ns.adobe.com/flex/spark"
> >>>>>>>   xmlns:mx="library://ns.adobe.com/flex/mx"
> >>>>>>> initialize="windowedapplication1_initializeHandler(event)"
>
> >>>>>>> <fx:Script>
> >>>>>>> <![CDATA[
> >>>>>>> import mx.events.FlexEvent;
> >>>>>>> import spark.events.TextOperationEvent;
> >>>>>>> protected function
> >>>>> scaledVal_changeHandler(event:TextOperationEvent):void
> >>>>>>> {
> >>>>>>> hexVal.text = int(scaledVal.text).toString(16).toUpperCase();
> >>>>>>> }
> >>>>>>> protected function hexVal_changeHandler(event:TextOperationEvent):void
> >>>>>>> {
> >>>>>>> var texts:String = "0x"+hexVal.text;
> >>>>>>> scaledVal.text = int(texts).toString(10);
> >>>>>>> }
> >>>>>>> protected function
> >>>>>>> windowedapplication1_initializeHandler(event:FlexEvent):void
> >>>>>>> {
> >>>>>>> nativeWindow.maximize();
> >>>>>>> }
> >>>>>>> protected function button1_clickHandler(event:MouseEvent):void
> >>>>>>> {
> >>>>>>> scaledVal.text = "";
> >>>>>>> hexVal.text = "";
> >>>>>>> }
> >>>>>>> ]]>
> >>>>>>> </fx:Script>
> >>>>>>> <fx:Declarations>
> >>>>>>> <!-- Place non-visual elements (e.g., services, value
objects) here -->
> >>>>>>> </fx:Declarations>
> >>>>>>> <s:BorderContainer width="100%" height="100%" borderVisible="true">
> >>>>>>> <s:VGroup  verticalCenter="0" horizontalCenter="0">
> >>>>>>> <s:Label width="100%" color="blue"
> >>>>>>> text="Demo to convert hexa to scaled value and vice-versa"/>
> >>>>>>> <mx:Form width="100%" height="100%">
> >>>>>>> <mx:FormHeading label="Enter values into the textbox"/>
> >>>>>>> <mx:FormItem label="Enter Scaled value">
> >>>>>>> <s:TextInput id="scaledVal" width="200"
> >>>>>>> change="scaledVal_changeHandler(event)"/>
> >>>>>>> </mx:FormItem>
> >>>>>>> <mx:FormItem label="Enter Hexa value">
> >>>>>>> <s:TextInput id="hexVal" width="200"
> >>>>> change="hexVal_changeHandler(event)"/>
> >>>>>>> </mx:FormItem>
> >>>>>>> </mx:Form>
> >>>>>>> <s:Button label="Reset" click="button1_clickHandler(event)"/>
> >>>>>>> </s:VGroup>
> >>>>>>> </s:BorderContainer>
> >>>>>>> </s:WindowedApplication>
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> --
> >>>>>>> Regards
> >>>>>>> 
> >>>>>>> 
> >>>>>>> Saju Thankathurai,
> >>>>>>> 
> >>>>>>> 
> >>>>>>> *"We **cannot do great things on this Earth, only small
things with
> >>>>> great
> >>>>>>> love"*
> >>>>>>> *-Mother Teresa (1910-1997)*
> >>>>>>> 
> >>>>>>> 
> >>>>>>> On Mon, Sep 29, 2014 at 5:06 PM, Evyatar Ben Halevi-Arbib
<
> >>>>>>> evyatarbh@gmail.com> wrote:
> >>>>>>> 
> >>>>>>>> You convert initially using uint, so decimals are omitted.
> >>>>>>>> 
> >>>>>>>> Regards,
> >>>>>>>> Evyatar
> >>>>>>>> 
> >>>>>>>> On Mon, Sep 29, 2014 at 2:22 PM, Saju Thankathurai <
> >>>>>>>> sathikeshjith@gmail.com>
> >>>>>>>> wrote:
> >>>>>>>> 
> >>>>>>>>> Hi,
> >>>>>>>>> 
> >>>>>>>>> How can we convert a decimal value to Hex value?
> >>>>>>>>> 
> >>>>>>>>> I need to convert *1345.4567 *value to HEX value.
I used the below
> >>>>> code
> >>>>>>>> to
> >>>>>>>>> convert decimal values to Hex,
> >>>>>>>>> 
> >>>>>>>>> hexVal.text = uint(scaledVal.text).toString(16).toUpperCase();
> >>>>>>>>> 
> >>>>>>>>> 
> >>>>>>>>> Below code to convert from Hex to decimal.
> >>>>>>>>> var texts:String = "0x"+hexVal.text;
> >>>>>>>>> scaledVal.text = uint(texts).toString(10);
> >>>>>>>>> 
> >>>>>>>>> 
> >>>>>>>>> The value 1345 is converted to HEX without any issues.
But after
> >>>>> the
> >>>>>>>>> decimal part, it is not converting.
> >>>>>>>>> 
> >>>>>>>>> Could some one give inputs on this conversion.
> >>>>>>>>> 
> >>>>>>>>> 
> >>>>>>>>> --
> >>>>>>>>> Regards
> >>>>>>>>> Saju Thankathurai,
> >>>>>>>>> 
> >>>>>>>> 
> >>>>>> 
> >>>>> 
> >>>>> 
> >>> 		 	   		  
> >> 		 	   		  
> > 		 	   		  
> 
 		 	   		  
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