c674xfastMath.lib crash

Jonathan Cheng

Prodigy 210 points

Other Parts Discussed in Thread: TMS320C6748

I am using the C67FASTMATH Math Library (c674xfastMath.lib) Version 2.01.00.0 and the following simple code will crash.

#include <math.h>

int main(void)

{

double resData;

double var = 0.0;

resData = 1.0 * sin(var);

return resData;

}

The code is O.K. if "var" is not 0.0. Single precision sin is also working O.K.. The sin function in defaut rts6740.lib is also working O.K.

Can this be a bug in the fastMath library?

Thanks.

over 14 years ago

0 Jonathan Cheng over 14 years ago

Prodigy 210 points

One more observation.

This simple program will only crash with the evaluation board. It will not crash with the c674x CPU Cycle Accurate Simmulator.

0 RandyP over 14 years ago in reply to Jonathan Cheng

TI__Guru* 84110 points

Jonathan Cheng,

Could you supply some more details, please:

Which DSP are you using from the C674x family?

Which exactly library is this? You mention C67FASTMATH and C674xfastMath. Is this the library from SPRC060?

What do you mean by "crash"?

Regards,
RandyP

0 Jonathan Cheng over 14 years ago in reply to RandyP

Prodigy 210 points

HI RandyP

Yes, we are using the library from SPRC060. It is release version 2.01.00.0. We are using the experimental board TMDSEXPL138 from logic with a OMAPL chip. But we are using it as the DSP TMS320C6748.

What I means crash is that, the program will jump to some unknown location and never return.

Processors

Processors forum

c674xfastMath.lib crash