/usr/include/atlas/atlas_csNKB.h is in libatlas-dev 3.10.2-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4
#ifndef ATLAS_CSNKB_H #define ATLAS_CSNKB_H #define ATL_CSNKB 0 #endif