/usr/include/clc/math/asin.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 6 7 | #define __CLC_BODY <clc/math/unary_decl.inc>
#define __CLC_FUNCTION asin
#include <clc/math/gentype.inc>
#undef __CLC_BODY
#undef __CLC_FUNCTION
|