c - How to include math.h #include <math.h> on kernel source file?

Question

I am trying to include math.h in my Linux kernel module. If I use,

#include '/usr/include/math.h'

It give me theses errors:

error: features.h: No such file or directory
error: bits/huge_val.h: No such file or directory
error: bits/mathdef.h: No such file or directory
error: bits/mathcalls.h: No such file or directory

Why is this?

Answer 1

You cannot use the C library in a kernel module, this is even more true for the math library part.