/usr/include/clc/math/pown.h is in libclc-dev 0.2.0+git20150813-2.
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 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #define _CLC_POWN_INTRINSIC "llvm.powi"
#define _CLC_POWN_DECL(GENTYPE, INTTYPE) \
_CLC_OVERLOAD _CLC_DECL GENTYPE pown(GENTYPE x, INTTYPE y);
#define _CLC_VECTOR_POWN_DECL(GENTYPE, INTTYPE) \
_CLC_POWN_DECL(GENTYPE##2, INTTYPE##2) \
_CLC_POWN_DECL(GENTYPE##3, INTTYPE##3) \
_CLC_POWN_DECL(GENTYPE##4, INTTYPE##4) \
_CLC_POWN_DECL(GENTYPE##8, INTTYPE##8) \
_CLC_POWN_DECL(GENTYPE##16, INTTYPE##16)
_CLC_OVERLOAD float pown(float x, int y) __asm(_CLC_POWN_INTRINSIC ".f32");
_CLC_VECTOR_POWN_DECL(float, int)
#ifdef cl_khr_fp64
_CLC_OVERLOAD double pown(double x, int y) __asm(_CLC_POWN_INTRINSIC ".f64");
_CLC_VECTOR_POWN_DECL(double, int)
#endif
#undef _CLC_POWN_INTRINSIC
#undef _CLC_POWN_DECL
#undef _CLC_VECTOR_POWN_DECL
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