Re: Problem in coding integers/floats

FROM : Nico
DATE : Thu Dec 19 19:31:23 2002

Hi John,

if I understood you correctly:
In my app I save some parameters in a file.
Here is the function to convert a double
to an array of chars (bytes):

- (void)serializeDbl:(double*)value To:(char*)pByte
{
    int i, steps;
    char * pVoid = (char*)value;

    steps = sizeof(double) / sizeof(char);

    for (i = 0; i < steps; i++)
    {
        pByte[i] = *(pVoid+i);
    }
}

When I load the data from a file I use NSData.
NSData provides the needed deserialisation.

I think there are better ways than using this
function, but it works...

Regards, Nico.

On Donnerstag, Dezember 19, 2002, at 02:22  Uhr, cocoa-dev-
<email_removed> wrote:

> Date: Thu, 19 Dec 2002 09:32:44 +0100
> Subject: Problem in coding integers/floats
> From: =?ISO-8859-1?Q?C=E9dric_John?= <cedric.<email_removed>>
> To: <email_removed>
>
> Ok, this might be a bit basic for you seasoned veterans out there, but
> I do get trouble in archiving floats and integers. Basically, I don't
> know how to properly use the "- encodeValuesOfObjCTypes:" methods. I've
> tried to use some permutations of  [coder
> encodeValuesOfObjCTypes:@encode(int) anInt]; but without success. I
> could not find a good documentation of the "@encode()" compiler
> directive. Alternatively, I've archived a NSNumber, but I was really
> disappointed because for some reasons it didn't record my float/int
> correctly. So if someone could provide two lines of code, one for
> coding and one for decoding an integer using
> "encodeValuesOfObjCTypes:", I would be really grateful!
>
> Cheereo
>
> Cidric
>
>
>
>
> Cidric John
> ---------------------------------
>
> It is almost hopeless to try to get your email account from CROG.org,
> but you can visit us online at http://www.crog.org !
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