Hai....
I'm working in telosb....When i am using math.h in my application,i
got error like Undefined reference to pow ..How to fix this problem.....Plz
explain it in detail.........
Manjunath Doddavenkatappa wrote:
>
>
> Hi,
>
> Can you please try sqrtf() ?
>
> Manjunath D
>
> ################################################################################################################
> ***************************************************************************************************************
>
> On Wed, 16 Nov 2011, [email protected] wrote:
>
>>
>> Hello,
>>
>> I'm working with telosb mote, and I need to use sqrt function in my
>> program, but I can't compile it.
>>
>> ===========================================
>> mkdir -p build/telosb
>> compiling TestMulAppC to a telosb binary
>> ncc -o build/telosb/main.exe -Os -O -mdisable-hwmul -Wall -Wshadow
>> -Wnesc-all -target=telosb -fnesc-cfile=build/telosb/app.c -board=
>> -DDEFINED_TOS_AM_GROUP=0x22 -DIDENT_APPNAME=\"TestMulAppC\"
>> -DIDENT_USERNAME=\"xubuntos\" -DIDENT_HOSTNAME=\"xubuntos-tinyos\"
>> -DIDENT_USERHASH=0x00f95284L -DIDENT_TIMESTAMP=0x4ec2f4a5L
>> -DIDENT_UIDHASH=0xb186c6f2L TestMulAppC.nc -lm <---- LM here
>> !!!!!!!!!!!!
>> TestMulC.nc: In function `TestMulC$Boot$booted':
>> TestMulC.nc:22: warning: unused variable `m'
>> /tmp/ccIJqAuN.o: In function `EllipticCurveP$mtIsPrime':
>> app.c:(.text+0x6c0): undefined reference to `sqrt'
>> make: *** [exe0] Error 1
>> ===========================================
>>
>> I have included math.h in my program, and I've noticed that the -lm
>> switch
>> is turned on, and I have even found the function declaration at ligne 62
>> in file /usr/msp430/include/math.h
>>
>> ===========================================
>> extern double sqrt _PARAMS((double));
>> ===========================================
>>
>> I don't understand why it cannot find sqrt function.
>>
>> So can anyone help me out?
>>
>> Best regards
>>
>> --
>> Yanbo SHOU
>> Ph.D student Cartoon Team
>> Computer Science Laboratory of Franche-Comté
>> Office 420C
>> 16 route de Gray
>> 25 000 Besançon, France
>>
>> _______________________________________________
>> Tinyos-help mailing list
>> [email protected]
>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>>
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