No, you don't understand.
32 bit floating point has 24 bit mantissa and 8 bit
exponent
Now calculate 2^24 .
It is:
16777216
Any *INTEGER* larger than that is subject to rounding in
IEEE standard.
Best regards,
Tomasz
Janeczko
amibroker.com
----- Original Message -----
Sent: Thursday, April 02, 2009 3:40
PM
Subject: Re: [amibroker] String problem
or what am I doing wrong ?
Thanks Tomasz. Yes I understand that the 32bit
standard has it's limitations. But why am I getting correct answers for
all other values ? Why is just '1' giving me a problem ? Has this to do with
precision and will I always get a zero for '1' where other values give me
the correct result ? Because that's what I see but do not understand.
If I should have a proper answer for that,
it's rather simple to modify the result accordingly with string manipulation
...
Problem with DateNum() for me is the difference
in result before and after 2000. After 2000 gives me '1YY' etc. before 2000
'YY' ... So 2004 becomes '104'. For 1950 I am getting '50' ... Of course
there is a solution for that also ...
Regards, Ton.
----- Original Message -----
Sent: Thursday, April 02, 2009 2:58
PM
Subject: Re: [amibroker] String
problem or what am I doing wrong ?
All numbers in AB are industry standard 32-bit FLOATING point
which
gives you 7 significant digits.
See "Range and Precision table"
here:
http://en.wikipedia.org/wiki/IEEE_754-1985
So
you should use
YYYMMDD encoding instead (the same as DateNum() is
using)
Best regards,
Tomasz Janeczko
amibroker.com
-----
Original Message -----
From: "amsiev" <ton.sieverding@scarlet.be>
To:
<amibroker@xxxxxxxxxps.com>
Sent:
Thursday, April 02, 2009 2:22 PM
Subject: [amibroker] String problem or
what am I doing wrong ?
> DatStr = "20040101";
>
_TRACE("Datum "+DatStr);
> DatNum = StrToNum(DatStr);
>
_TRACE("Datum "+WriteVal(DatNum,0,False));
>
>
First Trace gives : 20040101 Day=01
> But second gives : 20040100
Day=00
>
> No do the same with following string :
>
DatStr = "20040102";
>
> Both Traces give 20040102. Only when
Day=01 I have the above
> problem. Something wrong or what am I
doing wrong ?
> Please do not come with Date solutions. I know that
...
>
> Regards, Ton.
>
>
>
>
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