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PSoC 5, 3 & 1 MCU

Anonymous
Not applicable

hello, I am a custermor who use your product CYCKIT-050 development KIT. I want to do some floating point computing on such chip. I could run your demo project like ADC_DAC, LCD, etc...

   

However when I implement a program used y=log(x), the compiler showed error and fail to compile. I have already include "math.h" in my project:

   

#include <device.h>
#include <math.h>

   

void main()

   

{ float y,x;

   

y=log(x);

   

}

   

It compiled wrong in the PSoC Creator 2.1 enviroment! but when I write y=log(10); the compiling seemed ok. Such problem really confused me, please help me out!!

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3 Replies
Anonymous
Not applicable

Try this:

   

Goto Project > Build Settings > Linker > General > Additional Libraries.

   

Now type m in the Additional Libraries field. 

   

You could also refer to this KB article: http://www.cypress.com/?id=4&rID=42838

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JoMe_264151
Expert II

@DPAK

   

Congratulations! Your first post and a quite correct, prompt and complete one!

   

 

   

Bob

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Anonymous
Not applicable

This math library supports log10() function as well.

   

 

   

-

   

Kishore.

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