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hipCUB: /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-hipcub/checkouts/docs-5.5.1/hipcub/include/hipcub/backend/rocprim/thread/thread_reduce.hpp Source File
thread_reduce.hpp
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29 
30 #ifndef HIPCUB_ROCPRIM_THREAD_THREAD_REDUCE_HPP_
31 #define HIPCUB_ROCPRIM_THREAD_THREAD_REDUCE_HPP_
32 
33 BEGIN_HIPCUB_NAMESPACE
34 
36 namespace internal {
37 
38 template <
39  int LENGTH,
40  typename T,
41  typename ReductionOp,
42  bool NoPrefix = false>
43 __device__ __forceinline__ T ThreadReduce(
44  T* input,
45  ReductionOp reduction_op,
46  T prefix = T(0))
47 {
48  T retval;
49  if(NoPrefix)
50  retval = input[0];
51  else
52  retval = prefix;
53 
54  #pragma unroll
55  for (int i = 0 + NoPrefix; i < LENGTH; ++i)
56  retval = reduction_op(retval, input[i]);
57 
58  return retval;
59 }
60 
61 template <
62  int LENGTH,
63  typename T,
64  typename ReductionOp>
65 __device__ __forceinline__ T ThreadReduce(
66  T (&input)[LENGTH],
67  ReductionOp reduction_op,
68  T prefix)
69 {
70  return ThreadReduce<LENGTH, false>((T*)input, reduction_op, prefix);
71 }
72 
73 template <
74  int LENGTH,
75  typename T,
76  typename ReductionOp>
77 __device__ __forceinline__ T ThreadReduce(
78  T (&input)[LENGTH],
79  ReductionOp reduction_op)
80 {
81  return ThreadReduce<LENGTH, true>((T*)input, reduction_op);
82 }
83 
84 }
85 
86 END_HIPCUB_NAMESPACE
87 
88 #endif
internal
Internal namespace (to prevent ADL mishaps between static functions when mixing different CUB install...
Definition: thread_reduce.hpp:36