cuda_toolkit/include/thrust/system/cuda/detail/equal.h

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#pragma once

#include <thrust/detail/config.h>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header

#if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_NVCC
#include <thrust/system/cuda/config.h>

#include <thrust/system/cuda/detail/mismatch.h>

THRUST_NAMESPACE_BEGIN
namespace cuda_cub {

template <class Derived,
          class InputIt1,
          class InputIt2,
          class BinaryPred>
bool __host__ __device__
equal(execution_policy<Derived>& policy,
      InputIt1                   first1,
      InputIt1                   last1,
      InputIt2                   first2,
      BinaryPred                 binary_pred)
{
  return cuda_cub::mismatch(policy, first1, last1, first2, binary_pred).first == last1;
}

template <class Derived,
          class InputIt1,
          class InputIt2>
bool __host__ __device__
equal(execution_policy<Derived>& policy,
      InputIt1                   first1,
      InputIt1                   last1,
      InputIt2                   first2)
{
  typedef typename thrust::iterator_value<InputIt1>::type InputType1;
  return cuda_cub::equal(policy,
                         first1,
                         last1,
                         first2,
                         equal_to<InputType1>());
}



} // namespace cuda_cub
THRUST_NAMESPACE_END
#endif