TMS320F28035: F2803X IQMath issue.

Joe,

Can you be more specific about the code where you are seeing the issue? Which functions are affected?

Ideally, if you could provide a short stub of code an say which optimizer levels you are using it would help to isolate the issue. Thanks.

Regards,

Richard

Hi Richard,

Now we find IQSAT have issue if use level 0 optimization(register optimization).

It's limited function for negivative one will be wrong.

Thanks!

Joe,

Are you building with MATH_TYPE set to IQ_MATH or FLOAT_MATH?

If the latter, and you have a recent copy of IQmath, there was a change made to the sat function in the library in 2010.  See the comments at the top of IQmathLib.h for details.

If the former, I'm not seeing an issue on my machine.  Can you try this:

 - declare these globals:

_iq a = _IQ(1.01f);
_iq b = _IQ(-1.0f);
_iq c = _IQ(-99.0f);
_iq d = _IQ(0.0f);

 - in your code:

    d = _IQsat(c,a,b);

What is 'd' with and without -o0?

Regards,

Richard