Floating point trig

horkesley · Joined: 20 Feb 2007 Posts: 48 Location: Essex UK

Hi,

I need to be able to do the following x=sqrt(float); and other floating trig. functions.

I believe the CCS compiler can't do this, am I correct?

Regards,
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Horkesley Electronics Limited

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

It's right there in math.h:

SherpaDoug · Joined: 07 Sep 2003 Posts: 1640 Location: Cape Cod Mass USA

CCS has all the standard trig functions including sqrt() and they work on floats. It is rare that I would use a float on a PIC regardless of whose compiler because they take so much RAM & ROM. But CCS supports float math as well as anyone.

What is your application?
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horkesley · Joined: 20 Feb 2007 Posts: 48 Location: Essex UK

Hi SherpaDoug, PCM programmer,

Thanks for the reply.

I received an error message 'only integers supported'.

I will investigate further.

SherpaDoug, my application relates to using radio to calculate the distance the receive is from several transmitters.

I then use trilateration to calculated the position of the receiver relataive to the transmitters.

I plan to achieve a position accuracy better than 1 metre.

I write a lot of code with VB.NET and 'C' for the AVR series of micro's.

But hope to use a PIC for this application.

Regards,
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Horkesley Electronics Limited