[SOLVED] math.h and pow function

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LX_User
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Posted by LX_User: Sat. Nov 30, 2013 - 06:35 PM
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Hi freaks,

I have simple program for xmega 128A4U. I want to use function pow(), from math.h.

/simply/
# include

and in main() procedure

double temp;
double i;
...
temp = pow(16, i);
...
- I get error message:
Error 1 Disabling relaxation: it will not work with multiple definitions 1 1 ...

When I write:

temp = pow(16, 2) - compiling is OK.

When I remove line
temp = pow(16, i); - Compiling is OK too.

Any idea ?

(AVR Studio 6.1.2730, Win 8, 64Bit)

Tags:

AVR Microcontrollers, AVR and XMEGA
Last Edited: Sun. Dec 1, 2013 - 09:56 AM
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ka7ehk
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Posted by ka7ehk: Sat. Nov 30, 2013 - 08:54 PM
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Check the type for that second variable. pow() might not like a double there.

Jim

 

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Torby
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Posted by Torby: Sat. Nov 30, 2013 - 09:09 PM
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It says double,double.

double pow (	double 	__x, 
		double 	__y	 
	)

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Gold Markclawson
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Posted by clawson: Sat. Nov 30, 2013 - 10:58 PM
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libm.a?

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ka7ehk
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Posted by ka7ehk: Sun. Dec 1, 2013 - 02:58 AM
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is there an integer pow() if you don't include libm.a?

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

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LX_User
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Posted by LX_User: Sun. Dec 1, 2013 - 09:54 AM
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Thanks everybody,

libm.a working....

St.

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