On Sun, 2004-03-21 at 18:36, stucklenp wrote: > Kind persons: > > I routinely program using C and compile with gcc. My problem is that I need > some math log functions--ln, log10, and log2--and these functions are not > included in math.h from what I can determine. Can anyone suggest how I can > get these functions? > > I have tried notes to the glibc groups and not received any replies. > > Thanks. > > Paul You need to add '-lm' as an argument to the gcc command line in order to link in the math library. For example: gcc -O -o myprog myprog.c -lm If you are unsure of the required header file, you can usually type something like: man log at the command line. HTH, Marc Schwartz
