/usr/include/clc/geometric/normalize.h is in libclc-dev 0~git20140101-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | #define __CLC_BODY <clc/geometric/normalize.inc>
#include <clc/geometric/floatn.inc>
|