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Friday, July 20, 2007, 8:06:15 PM, you wrote:
>> BuyPrice = something - ( something % 0.25 );
>> Multiply your number by 4.
>> Round it to an integer
>> Divide it by 4 to a decimal.
> These two operations give exactly the same result (within the limits
> of possible float rounding errors) but in a slightly different way.
> The modulo operator (%) gives the remainder after dividing by the
> modulus (0.25), so the first statement is saying take the number and
> remove any remainder after dividing the number by 0.25. That will
> force the number to be a multiple of 0.25. To make it more obvious,
> imagine the modulus is 10 and the number 363. 363%10 is 3 and 363-3 is
> 360, a multiple of 10 as expected.
> The second method does the same thing but involves a multiplication as
> well as a division, whereas the modulo method only involves a division
> and a subtraction. Subtraction is generally less computationally
> expensive than multiplication, and depending on how it's implemented,
> the modulo operation may not require doing the full division just to
> get the remainder (it's been quite a while though since I looked at
> how things like division and modulo are implemented at a low level,
> and here it's with floating point numbers as well).
> If you want it to round up or down depending on the next decimal
> place, the second method is probably more obvious, since you just add
> 0.5 before taking the integer part. For the first _expression_, you need
> to add half the modulus before doing the modulo operation:
> somethingElse = something + 0.125;
> BuyPrice = somethingElse - ( somethingElse % 0.25 );
> Again, it's easier to see with a modulus of 10, where half would be 5:
> 363+5=368, 368-8=360
> 364+5=369, 369-9=360
> 365+5=370, 370-0=370
> 366+5=371, 371-1=370
> Regards,
> GP
> --- In amibroker@xxxxxxxxxxxxxxx, "sslack88" <jzzpiano88@xxx> wrote:
>> I actually found it in the "AFL Reference Manual - Basics", it's in
>> the same section where all of the operators are being discussed "++, -
>> -, [], ^, etc."
>> I still don't understand Tomasz code, but at least I know what "%"
>> operator does now.
>> --- In amibroker@xxxxxxxxxxxxxxx, "dingo" <dingo@> wrote:
>> >
>> > Ok duude!
>> >
>> > Here's a minor gripe of mine: In the help file how can I find out
>> where the
>> > "%" operator is discussed? A search on the % character does not
>> work.
>> >
>> > d
>> >
>> > > -----Original Message-----
>> > > From: amibroker@xxxxxxxxxxxxxxx
>> > > [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Tomasz Janeczko
>> > > Sent: Friday, July 20, 2007 1:21 PM
>> > > To: amibroker@xxxxxxxxxxxxxxx
>> > > Subject: Re: [amibroker] Rounding up the BuyPrice to the
>> > > nearest 0.25 point
>> > >
>> > > something = Param("Test", 10, 9, 11, 0.01 );
>> > > BuyPrice = something - ( something % 0.25 );
>> > >
>> > > Title = ""+BuyPrice;
>> > >
>> > > Best regards,
>> > > Tomasz Janeczko
>> > > amibroker.com
>> > > ----- Original Message -----
>> > > From: "dingo" <dingo@>
>> > > To: <amibroker@xxxxxxxxxxxxxxx>
>> > > Sent: Friday, July 20, 2007 6:12 PM
>> > > Subject: RE: [amibroker] Rounding up the BuyPrice to the
>> > > nearest 0.25 point
>> > >
>> > >
>> > > > You write the AFL:
>> > > >
>> > > > Multiply your number by 4.
>> > > >
>> > > > Round it to an integer
>> > > >
>> > > > Divide it by 4 to a decimal.
>> > > >
>> > > > d
>> > > >
>> > > >> -----Original Message-----
>> > > >> From: amibroker@xxxxxxxxxxxxxxx
>> > > >> [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of dingo
>> > > >> Sent: Friday, July 20, 2007 12:00 PM
>> > > >> To: amibroker@xxxxxxxxxxxxxxx
>> > > >> Subject: RE: [amibroker] Rounding up the BuyPrice to the
>> > > >> nearest 0.25 point
>> > > >>
>> > > >> Oops = that was less than helpful.. I didn't see the .25...
>> > > >> I'll look into
>> > > >> my math magic resources..
>> > > >>
>> > > >> d
>> > > >>
>> > > >> > -----Original Message-----
>> > > >> > From: amibroker@xxxxxxxxxxxxxxx
>> > > >> > [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of dingo
>> > > >> > Sent: Friday, July 20, 2007 11:56 AM
>> > > >> > To: amibroker@xxxxxxxxxxxxxxx
>> > > >> > Subject: RE: [amibroker] Rounding up the BuyPrice to the
>> > > >> > nearest 0.25 point
>> > > >> >
>> > > >> > Multiply by 100 and use the round function then divide by
>> 100.
>> > > >> >
>> > > >> > d
>> > > >> >
>> > > >> > > -----Original Message-----
>> > > >> > > From: amibroker@xxxxxxxxxxxxxxx
>> > > >> > > [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of sslack88
>> > > >> > > Sent: Friday, July 20, 2007 10:05 AM
>> > > >> > > To: amibroker@xxxxxxxxxxxxxxx
>> > > >> > > Subject: [amibroker] Rounding up the BuyPrice to the
>> nearest
>> > > >> > > 0.25 point
>> > > >> > >
>> > > >> > > How do you round your BuyPrice up to the nearest 0.25
>> > > point? For
>> > > >> > > example:
>> > > >> > >
>> > > >> > > I want to buy (intraday) when the price breaks the
>> (Open+Some
>> > > >> > > Value) so
>> > > >> > > my formula states to buy when the price is 1280.53 or
>> higher.
>> > > >> > > However,
>> > > >> > > I am trading the ES so I can only buy at 1280.75.
>> > > >> > >
>> > > >> > > How do I set the BuyPrice to 1280.75? Right now the
>> BuyPrice
>> > > >> > > is being
>> > > >> > > set to the (Open+Some Value) price (1280.53) which is not
>> > > >> > possible in
>> > > >> > > real trading.
>> > > >> > >
>> > > >> > > Thanks,
>> > > >> > > Steve
>> > > >> > >
>> > > >> > >
>> > > >> > >
>> > > >> > > Please note that this group is for discussion between
>> > > users only.
>> > > >> > >
>> > > >> > > To get support from AmiBroker please send an e-mail
>> > > directly to
>> > > >> > > SUPPORT {at} amibroker.com
>> > > >> > >
>> > > >> > > For NEW RELEASE ANNOUNCEMENTS and other news always
>> > > check DEVLOG:
>> > > >> > > http://www.amibroker.com/devlog/
>> > > >> > >
>> > > >> > > For other support material please check also:
>> > > >> > > http://www.amibroker.com/support.html
>> > > >> > >
>> > > >> > > Yahoo! Groups Links
>> > > >> > >
>> > > >> > >
>> > > >> > >
>> > > >> > >
>> > > >> >
>> > > >> >
>> > > >> >
>> > > >> > Please note that this group is for discussion between users
>> only.
>> > > >> >
>> > > >> > To get support from AmiBroker please send an e-mail directly
>> to
>> > > >> > SUPPORT {at} amibroker.com
>> > > >> >
>> > > >> > For NEW RELEASE ANNOUNCEMENTS and other news always check
>> DEVLOG:
>> > > >> > http://www.amibroker.com/devlog/
>> > > >> >
>> > > >> > For other support material please check also:
>> > > >> > http://www.amibroker.com/support.html
>> > > >> >
>> > > >> > Yahoo! Groups Links
>> > > >> >
>> > > >> >
>> > > >> >
>> > > >> >
>> > > >>
>> > > >>
>> > > >>
>> > > >> Please note that this group is for discussion between users
>> only.
>> > > >>
>> > > >> To get support from AmiBroker please send an e-mail directly
>> to
>> > > >> SUPPORT {at} amibroker.com
>> > > >>
>> > > >> For NEW RELEASE ANNOUNCEMENTS and other news always check
>> DEVLOG:
>> > > >> http://www.amibroker.com/devlog/
>> > > >>
>> > > >> For other support material please check also:
>> > > >> http://www.amibroker.com/support.html
>> > > >>
>> > > >> Yahoo! Groups Links
>> > > >>
>> > > >>
>> > > >>
>> > > >>
>> > > >
>> > > >
>> > > >
>> > > > Please note that this group is for discussion between users
>> only.
>> > > >
>> > > > To get support from AmiBroker please send an e-mail directly to
>> > > > SUPPORT {at} amibroker.com
>> > > >
>> > > > For NEW RELEASE ANNOUNCEMENTS and other news always check
>> DEVLOG:
>> > > > http://www.amibroker.com/devlog/
>> > > >
>> > > > For other support material please check also:
>> > > > http://www.amibroker.com/support.html
>> > > >
>> > > > Yahoo! Groups Links
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > >
>> > >
>> > > Please note that this group is for discussion between users only.
>> > >
>> > > To get support from AmiBroker please send an e-mail directly to
>> > > SUPPORT {at} amibroker.com
>> > >
>> > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> > > http://www.amibroker.com/devlog/
>> > >
>> > > For other support material please check also:
>> > > http://www.amibroker.com/support.html
>> > >
>> > > Yahoo! Groups Links
>> > >
>> > >
>> > >
>> >
> Please note that this group is for discussion between users only.
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To get support from AmiBroker please send an e-mail directly to
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