is_null_order_entry< K, I > Struct Template Reference

Public Types
typedef I	argument_type

Public Member Functions
	is_null_order_entry (const int8_t *base, const size_t stride, const int64_t nul)
__host__ __device__ bool	operator() (const I index)

Public Attributes
const int8_t *	oe_base
const size_t	oe_stride
const int64_t	null_val

Detailed Description

template<class K, class I = int32_t>
struct is_null_order_entry< K, I >

Definition at line 55 of file TopKSort.cu.

Member Typedef Documentation

template<class K , class I = int32_t>

typedef I is_null_order_entry< K, I >::argument_type

Definition at line 56 of file TopKSort.cu.

Constructor & Destructor Documentation

template<class K , class I = int32_t>

is_null_order_entry< K, I >::is_null_order_entry ( const int8_t *  base, const size_t  stride, const int64_t  nul  )

inline

Definition at line 57 of file TopKSort.cu.

      : oe_base(base), oe_stride(stride), null_val(nul) {}

Member Function Documentation

template<class K , class I = int32_t>

__host__ __device__ bool is_null_order_entry< K, I >::operator() ( const I  index )

inline

Definition at line 59 of file TopKSort.cu.

References is_null_order_entry< K, I >::null_val, is_null_order_entry< K, I >::oe_base, and is_null_order_entry< K, I >::oe_stride.

                                                     {
    const auto oe_val = *reinterpret_cast<const K*>(oe_base + index * oe_stride);
    switch (sizeof(K)) {
      case 4:
        return *reinterpret_cast<const int32_t*>(&oe_val) ==
               static_cast<int32_t>(null_val);
      case 8:
        return *reinterpret_cast<const int64_t*>(&oe_val) == null_val;
      default:
        return false;
    }
  }

Member Data Documentation

template<class K , class I = int32_t>

const int64_t is_null_order_entry< K, I >::null_val

Definition at line 73 of file TopKSort.cu.

Referenced by is_null_order_entry< K, I >::operator()().

template<class K , class I = int32_t>

const int8_t* is_null_order_entry< K, I >::oe_base

Definition at line 71 of file TopKSort.cu.

Referenced by is_null_order_entry< K, I >::operator()().

template<class K , class I = int32_t>

const size_t is_null_order_entry< K, I >::oe_stride

Definition at line 72 of file TopKSort.cu.

Referenced by is_null_order_entry< K, I >::operator()().

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The documentation for this struct was generated from the following file:

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/TopKSort.cu