Re: [Tinyos-help] undefined reference to `sqrt'
Hai I'm working in telosbWhen 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, ys...@lifc.univ-fcomte.fr 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 Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- View this message in context: http://old.nabble.com/undefined-reference-to-%60sqrt%27-tp32851479p32880286.html Sent from the TinyOS - Help mailing list archive at Nabble.com. ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] undefined reference to `sqrt'
Look carefully in math.h, there may be an #ifdef around the double math functions. I thought that the telosb used doubles rather than floats (the ATMEGA uses float math) but it sounds like I'm wrong... MS ys...@lifc.univ-fcomte.fr wrote: Hi Manjunath, Yes it compiled, thanks a lot. And I'll check if the result is correct. Still don't know why sqrt function is declared in math.h but unusable. Maybe it's declared but not implemented. Anyway I really appreciate your help. Best regards. Hi, Can you please try sqrtf() ? Manjunath D *** On Wed, 16 Nov 2011, ys...@lifc.univ-fcomte.fr 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 Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] undefined reference to `sqrt'
Hi, Can you please try sqrtf() ? Manjunath D *** On Wed, 16 Nov 2011, ys...@lifc.univ-fcomte.fr 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$mtIsPrime': app.c:(.text+0x6c0): undefined reference to `sqrt' make: *** [exe0] Error 1 === I have included math.h in my program, and I've noticed that the -lm switch is turned on, and I have even found the function declaration at ligne 62 in file /usr/msp430/include/math.h === extern double sqrt _PARAMS((double)); === I don't understand why it cannot find sqrt function. So can anyone help me out? Best regards -- Yanbo SHOU Ph.D student Cartoon Team Computer Science Laboratory of Franche-Comté Office 420C 16 route de Gray 25 000 Besançon, France ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] undefined reference to `sqrt'
Hi Manjunath, Yes it compiled, thanks a lot. And I'll check if the result is correct. Still don't know why sqrt function is declared in math.h but unusable. Maybe it's declared but not implemented. Anyway I really appreciate your help. Best regards. Hi, Can you please try sqrtf() ? Manjunath D *** On Wed, 16 Nov 2011, ys...@lifc.univ-fcomte.fr wrote: Hello, I'm working with telosb mote, and I need to use sqrt function in my program, but I can't compile it. === mkdir -p build/telosb compiling TestMulAppC to a telosb binary ncc -o build/telosb/main.exe -Os -O -mdisable-hwmul -Wall -Wshadow -Wnesc-all -target=telosb -fnesc-cfile=build/telosb/app.c -board= -DDEFINED_TOS_AM_GROUP=0x22 -DIDENT_APPNAME=\TestMulAppC\ -DIDENT_USERNAME=\xubuntos\ -DIDENT_HOSTNAME=\xubuntos-tinyos\ -DIDENT_USERHASH=0x00f95284L -DIDENT_TIMESTAMP=0x4ec2f4a5L -DIDENT_UIDHASH=0xb186c6f2L TestMulAppC.nc -lm LM here TestMulC.nc: In function `TestMulC$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 Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- 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 Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
