math.h and other included header files

ecc6 · 04-19-2003, 02:05 PM

I was trying to write a program in c that used the exp() function in math.h. It wasn't working so I investigated and found a crippled version of math.h that didn't have that function (it was in /usr/include). Also other libraries weren't there (stlib.h, etc,). What's up with that? I did a complete install so basically it isn't included in slackware. Does anybody know how I can get those standard libraries (they're documented in any book on c). The lame math.h file was in the glibc package. Why aren't they included?

ecc6 · 04-19-2003, 02:15 PM

Nevermind, I'm an idiot. I'm somewhat new to C and I was trying to convert a matlab script to c. I found the following after doing some more searching.

You have to link with the math library.
(libm.so, libm.a, aka -lm)

E.g.

cc -o foo foo.c -lm