/usr/include/clc/shared/max.h is in libclc-dev 0.2.0+git20180312-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | #define __CLC_BODY <clc/shared/max.inc>
#include <clc/integer/gentype.inc>
#define __CLC_BODY <clc/shared/max.inc>
#include <clc/math/gentype.inc>
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