IQmath Build Problem with C2000 Launchpad

Hi Gautam,

Correcting build and link paths solved my problem.

Now I am having problem in conversion of IQ data into float data. This is sample program given in IQmath_Quickstart.pdf.

#include “IQmathLib.h”
#define PI 3.14156
_iq in1, out1;
_iq28 in2, out2;
void main(void ){
// in1 = 0.25 x pi x 2^29 = 0x1921FB54
// out1 = sin(0.25 x pi)x 2^29 = 0x16A09E66
// in2 = 0x25 x pi x 2^29 = 0x1921FB54
// out2 = sin(0.25 x pi)x 2^29 = 0x16A09E66
in1=_IQ(0.25*PI);
out1=_IQsin(in1)
in2=_IQ29(0.25*PI)
out2=_IQ29sin(in2);
}

_IQ function is used to convert float(0.25*PI) into IQ data.

Now how do I change IQ data(out1 & out2) back to float.

I need to do this so that I can easily manipulate data.

Hi Vikas,

Try this: Let me now whether this works or gives you incompatible datatype error.

_iq28 out2;
float result;

result = out2;   //copying iq into float datatype

Hi Gautam,

I used _IQtoF(). 

It works.

Thanks

That's great.

Good luck & Regards,

Gautam