topic-18280

Posts: 25

Joined: Sun Oct 23, 2005 09:58 PM

Trigometric function
Posted: Fri Mar 05, 2010 03:59 PM

Hi,

Currently am working with FWH 2.7 January 2007 version Using Harbour Alpha build 45.0 Intl. (Flex).
I require access to the ArcTan function. Is there a library that I can link in to provide the missing trigonometric functions?

Thanks,

Vytas

Verhoven

Posts: 563

Joined: Sun Oct 09, 2005 07:23 PM

Re: Trigometric function
Posted: Fri Mar 05, 2010 04:23 PM

Here is the solution for nearly every function you need: The Taylor series.

http://es.wikipedia.org/wiki/Serie_de_Taylor

This message is in Spanish but you can be sure to find it in English too.

nageswaragunupudi

Posts: 10733

Joined: Sun Nov 19, 2006 05:22 AM

Re: Trigometric function
Posted: Fri Mar 05, 2010 05:12 PM

All the necessary Trigonometric functions are available in CT.LIB of XHarbour or HBCT.LIB for Harbour. These libraries come along with xHarbour and Harbour. We just need to link these libraries also to use the functions.

We have SIN, COS, TAN, ASIN, ACOS, ATAN, ATAN2, TANH, etc

Regards

G. N. Rao.

Hyderabad, India

Vytas

Posts: 25

Joined: Sun Oct 23, 2005 09:58 PM

Re: Trigometric function
Posted: Fri Mar 05, 2010 06:26 PM

Thanks for pointing me to the newer Harbour software. I cannot link it in using a modified FWH 2.7 link script. Perhaps I need a more current rmk file. If so where can I get one? Or do I have to upgrade my FWH software?

Thanks,

Vytas

James Bott

Posts: 4840

Joined: Fri Nov 18, 2005 04:52 PM

Re: Trigometric function
Posted: Fri Mar 05, 2010 06:56 PM

Go to this page and look for trig.zip and triglib.zip.

http://www.the-oasis.net/ftpmaster.php3 ... pgenrl.htm

Regards,
James

FWH 18.05/xHarbour 1.2.3/BCC7/Windows 10

nageswaragunupudi

Posts: 10733

Joined: Sun Nov 19, 2006 05:22 AM

Re: Trigometric function
Posted: Sat Mar 06, 2010 06:40 AM

Vytas wrote:Thanks for pointing me to the newer Harbour software. I cannot link it in using a modified FWH 2.7 link script. Perhaps I need a more current rmk file. If so where can I get one? Or do I have to upgrade my FWH software?

Thanks,

Vytas

You can use the FWH 2.7 also.
You need to change your link script to include 'hbct.lib' if you are using Harbour and 'ct.lib' if you are using xHarbour. These libraries should be available in (x)Harbour\lib folder.

Are you using Harbour or xHarbour and which version?

All these trigonometric functions were available from the days of Clipper. Clipper users were required to purchase CA Tools lib separately.

Now (x)Harbour provides these functions free of cost.

Regards

G. N. Rao.

Hyderabad, India

Biel EA6DD

Posts: 682

Joined: Tue Feb 14, 2006 09:48 AM

Re: Trigometric function
Posted: Wed Mar 10, 2010 08:40 AM

Include in your PRG, and ready to use. (Tang(n),Atn(),Cos(),Sin(),Acos())

Code (fw): Select all Collapse

#pragma BEGINDUMP
#include "windows.h"
#include "math.h"
#include "hbapi.h"

HB_FUNC( TANG )
{
   hb_retnd((double) tan((double)hb_parnd(1) ));
}

HB_FUNC( ATN )
{
   hb_retnd((double) atan((double)hb_parnd(1)));
}
HB_FUNC( COS )
{
   hb_retnd((double) cos((double)hb_parnd(1)));
}
HB_FUNC( ACOS )
{
   hb_retnd((double) acos((double)hb_parnd(1)));
}
HB_FUNC( SIN )
{
   hb_retnd((double) sin((double)hb_parnd(1)));
}

#pragma ENDDUMP

Saludos desde Mallorca
Biel Maimó
http://bielsys.blogspot.com/

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