On 08/11/2010 06:31 PM, Dj YB wrote: > Hello, > > I have written a small program in C and I am using the math.h library using > #include<math.h> > so far everything is good. > when using the function sqrt I get the next error: > > $ cc a.c > /tmp/ccTaon4H.o: In function `main': > a.c:(.text+0x3e): undefined reference to `sqrt' > > to be sure I checked man sqrt: > > SYNOPSIS > > #include<math.h> > > double sqrt(double x); A couple of lines later you will find this sentence: " Link with -lm." > I have no idea what is wrong, any suggestions are welcome. Math functions are not contained in libc, they are in a separate library called libm. => cc a.c -lm Ralf -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
