CodeWarrior for MCUのトピックHC12: Codewarrior do not execute the Function

HC12: Codewarrior do not execute the Function

JR — Mon, 28 Aug 2006 06:07:30 GMT

Hi friends !

I am trying to make the function below. It is not functioning. The compiler Codewarrior 3,1 accuses error and appears the following message :

Link error ; L1822ymbol _FUFLOAT in file c:\....main.c.o is undefined.

Link error ; L1822ymbol _FDIV_RC in file c:\....main.c.o is undefined.

Link error ; L1822ymbol _MUL in file c:\....main.c.o is undefined.

Link error ; L1822ymbol _FSTRUNC in file c:\....main.c.o is undefined.

This are the codes:

while (1) // always
{

unsigned int res1,res2,res3;
res1=10;
res2=100;
res3=prod(&res1,&res2);// Here i call the function
}

unsigned int prod (unsigned int *a,unsigned int *b) // This is the Function

{
unsigned int tempa;
unsigned int tempb;
unsigned int tempc;
signed int t;
float x;
tempa=*a; //tempa is a number between 1 to 100
tempb=*b; //tempb is a number between 1 to 100

x=(tempa/100.0)*tempb;
t=(signed int)x;
tempc=(unsigned int)t;

return(tempc);

}

what's wrong? Already it makes many days that I am trying and i don't know what to do to function. Please, help me! Thanks , JR

Message Edited by CrasyCat on 2007-04-13 02:30 PM

Re: Codewarrior do not execute the Function

admin — Mon, 28 Aug 2006 08:44:15 GMT

Hello:

It seemed float type is used in you project, but you did not select "float type support" when you create your project.

Just re-create a new project and select "float support", and rebuild it.

Re: Codewarrior do not execute the Function

bigmac — Mon, 28 Aug 2006 11:41:58 GMT

Hello JR,

Yes, the use of the float is the current problem. However, since you commence with int data, and return an int, it should be possible to avoid using float within your function. This will greatly improve the efficiency of your code.

The following calculation should maintain unsigned int precision, with a calculated value between 0 and 100.

tempc = tempa * tempb / 100;

Alternatively, i would think you could simply write the contents of the function as -

unsigned int prod (unsigned int *a,unsigned int *b)

{
return ((*a) * (*b) / 100);

}

Regards,

Mac

Re: Codewarrior do not execute the Function

Lundin — Mon, 28 Aug 2006 17:29:24 GMT

No need to create a new project.

Assuming you are using HCS12 with banked memory model:

- Take a backup copy of your project (just in case...)
- Remove ansibi.lib from your project.
- Add ansibf.lib to your project.

Re: Codewarrior do not execute the Function

JR — Fri, 01 Sep 2006 00:54:44 GMT

Hi Markie !

You are right ! Thank you ! JR

Re: Codewarrior do not execute the Function

JR — Fri, 01 Sep 2006 00:58:35 GMT

Hi friend !

Your explanation helped to solve the problem, thank you !

Re: Codewarrior do not execute the Function

pilou007 — Fri, 08 Jun 2012 16:03:51 GMT

Hy,

Sorry to re-open this topic, I'm a total newbie in µC, and I got this error too, how can I do what you say??

best regards

Pilou007