topic Re: sqrt not returning proper value in CodeWarrior for MCU

sqrt not returning proper value

Pyretta — Wed, 24 Feb 2010 22:24:51 GMT

double bb, cc;

bb = 16;
cc = sqrt(bb);

the result of CC in the Data:2 windows is the following

bb 16 double

cc -7.6513192831291111e+221 double

Any thoughts?

Also, is there a way to limit the decimal to say 6 locations?

Thank you

Re: sqrt not returning proper value

CompilerGuru — Wed, 24 Feb 2010 23:24:11 GMT

First, which chip are you targeting?

Things to check:

- make sure your stack is big enough.

- is the project linking the correct libraries (double format with 64 bit vs 32 bit libraries)?

- try the same snippet with a wizard generated project. Ev. increase STACKSIZE in prm (not sure if necessary, also depends on the targeted device).

Daniel

Re: sqrt not returning proper value

Pyretta — Thu, 25 Feb 2010 00:44:17 GMT

After searching around, this project I do not think was created with the PE. I saw someone said they added -Fd to the target command line arguments options and so I did that and it is now working.

How would I know what I would or would not need when first creating a project and then down the road, say "Hey! I need to do this but did not enable it in the PE when I first started". When I click on "processor expert" at the top, it gives me some windows that says "Project demo.mcp does not contain PE project.... do you want to add a new PE project?" and when saying yes, my code no longer compiles and it cannot locate the header files for the MC9S09LC60.

Is there a way I can get my current code working so that I can utilize the PE or would I have to start over again? I saw that there was another "main" after going through the steps above.