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devel / comp.lang.xharbour / ctot error

SubjectAuthor
* ctot errorClaude R
`* ctot errorEnrico Maria Giordano
 `* ctot errorRon Pinkas
  `* ctot errorEnrico Maria Giordano
   `* ctot errorEnrico Maria Giordano
    `* ctot errorEnrico Maria Giordano
     `- ctot errorEnrico Maria Giordano

1
ctot error

<61e79070-b0b4-4140-998d-001f8eb1df76n@googlegroups.com>

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Subject: ctot error
From: jclau...@gmail.com (Claude R)
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 by: Claude R - Mon, 21 Aug 2023 14:12 UTC

Hello,
Please try this:

set date format to "dd/mm/yyyyy"
alert(ttoc(ctot('21/08/2023 13:31:08.228')))

gives here result '21/08/2023 13:31:08.227' (!)

Is this bug still in latest version ?
Claude R.

Re: ctot error

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From: e.m.gior...@emagsoftware.it (Enrico Maria Giordano)
Newsgroups: comp.lang.xharbour
Subject: Re: ctot error
Date: Mon, 21 Aug 2023 17:43:13 +0200
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 by: Enrico Maria Giordan - Mon, 21 Aug 2023 15:43 UTC

Il 21/08/2023 16:12, Claude R ha scritto:

> Hello,
> Please try this:
>
> set date format to "dd/mm/yyyyy"
> alert(ttoc(ctot('21/08/2023 13:31:08.228')))
>
> gives here result '21/08/2023 13:31:08.227' (!)
>
> Is this bug still in latest version ?

Yes, there is. :-(

I don't know how to fix it, sorry. Ron?

--
Enrico Maria Giordano

http://www.emagsoftware.it
http://www.emagsoftware.it/emgmusic
http://www.emagsoftware.it/spectrum
http://www.emagsoftware.it/tbosg

Re: ctot error

<524648d0-18f7-4f2b-8450-93961b21d348n@googlegroups.com>

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Subject: Re: ctot error
From: ronpin...@gmail.com (Ron Pinkas)
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 by: Ron Pinkas - Mon, 21 Aug 2023 17:27 UTC

On Monday, August 21, 2023 at 10:43:13 AM UTC-5, Enrico Maria Giordano wrote:
> Il 21/08/2023 16:12, Claude R ha scritto:
>
> > Hello,
> > Please try this:
> >
> > set date format to "dd/mm/yyyyy"
> > alert(ttoc(ctot('21/08/2023 13:31:08.228')))
> >
> > gives here result '21/08/2023 13:31:08.227' (!)
> >
> > Is this bug still in latest version ?
> Yes, there is. :-(
>
> I don't know how to fix it, sorry. Ron?
>
> --
> Enrico Maria Giordano
>
> http://www.emagsoftware.it
> http://www.emagsoftware.it/emgmusic
> http://www.emagsoftware.it/spectrum
> http://www.emagsoftware.it/tbosg

I am not familiar with the datetime implementation, but IIYC this ie likely a floating point arithmetic limitation issue.

Ron

Re: ctot error

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From: e.m.gior...@emagsoftware.it (Enrico Maria Giordano)
Newsgroups: comp.lang.xharbour
Subject: Re: ctot error
Date: Mon, 21 Aug 2023 19:43:28 +0200
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 by: Enrico Maria Giordan - Mon, 21 Aug 2023 17:43 UTC

Il 21/08/2023 19:27, Ron Pinkas ha scritto:

> I am not familiar with the datetime implementation, but IIYC this ie likely a floating point arithmetic limitation issue.

I don't think so, at least not at the CTOD() function level. The value
of s_value here is 8.228000:

hb_retdt( y_value, m_value, d_value, h_value, n_value, s_value, 0 );

But the displayed value is:

21/08/2023 13:31:08.227

So the bug seem to be inside hb_retdt() function. Too much for me... :-(

--
Enrico Maria Giordano

http://www.emagsoftware.it
http://www.emagsoftware.it/emgmusic
http://www.emagsoftware.it/spectrum
http://www.emagsoftware.it/tbosg

Re: ctot error

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From: e.m.gior...@emagsoftware.it (Enrico Maria Giordano)
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Subject: Re: ctot error
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 by: Enrico Maria Giordan - Mon, 21 Aug 2023 17:44 UTC

Il 21/08/2023 19:43, Enrico Maria Giordano ha scritto:

> I don't think so, at least not at the CTOD() function level. The value
> of s_value here is 8.228000:
>
> hb_retdt( y_value, m_value, d_value, h_value, n_value, s_value, 0 );
>
> But the displayed value is:
>
> 21/08/2023 13:31:08.227
>
> So the bug seem to be inside hb_retdt() function. Too much for me... :-(

But if someone have any experiments to suggest I will be glad to try to
make it.

--
Enrico Maria Giordano

http://www.emagsoftware.it
http://www.emagsoftware.it/emgmusic
http://www.emagsoftware.it/spectrum
http://www.emagsoftware.it/tbosg

Re: ctot error

<uc7rm7$3gm3s$1@dont-email.me>

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Newsgroups: comp.lang.xharbour
Subject: Re: ctot error
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 by: Enrico Maria Giordan - Thu, 24 Aug 2023 15:06 UTC

Thanks to Richard Visscher that pointed me to the bugged function, I
could fixed this bug:

long hb_timeEncode( int iHour, int iMinute, double dSeconds )
{ HB_TRACE( HB_TR_DEBUG, ( "hb_timeEncode(%d, %d, %f)", iHour,
iMinute, dSeconds ) );
//printf( "hb_timeEncode(%d, %d, %f)", lHour, lMinute, dSeconds);

if( iHour >= 0 && iHour <= 23 && iMinute >= 0 && iMinute <= 59 &&
dSeconds >= 0 && dSeconds < 60 )
{
return ( long ) ( iHour * 3600 * HB_DATETIMEINSEC + iMinute * 60
* HB_DATETIMEINSEC + dSeconds * HB_DATETIMEINSEC ); // The bug was here!!!
}

return 0;
}

Please commit.

--
Enrico Maria Giordano

http://www.emagsoftware.it
http://www.emagsoftware.it/emgmusic
http://www.emagsoftware.it/spectrum
http://www.emagsoftware.it/tbosg

Re: ctot error

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From: e.m.gior...@emagsoftware.it (Enrico Maria Giordano)
Newsgroups: comp.lang.xharbour
Subject: Re: ctot error
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 by: Enrico Maria Giordan - Thu, 24 Aug 2023 15:19 UTC

Il 24/08/2023 17:06, Enrico Maria Giordano ha scritto:

>       return ( long ) ( iHour * 3600 * HB_DATETIMEINSEC + iMinute * 60
> * HB_DATETIMEINSEC + dSeconds * HB_DATETIMEINSEC );  // The bug was here!!!

But please, verify my fix before committing it!

--
Enrico Maria Giordano

http://www.emagsoftware.it
http://www.emagsoftware.it/emgmusic
http://www.emagsoftware.it/spectrum
http://www.emagsoftware.it/tbosg

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