// Copyright (c) 2017-2021 Advanced Micro Devices, Inc. All rights reserved.
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// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
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#ifndef ROCPRIM_INTRINSICS_BIT_HPP_
#define ROCPRIM_INTRINSICS_BIT_HPP_

#include "../config.hpp"

BEGIN_ROCPRIM_NAMESPACE

/// \addtogroup intrinsicsmodule
/// @{

/// \brief Returns a single bit at 'i' from 'x'
ROCPRIM_DEVICE ROCPRIM_INLINE
int get_bit(int x, int i)
{
    return (x >> i) & 1;
}

/// \brief Bit count
///
/// Returns the number of bit of \p x set.
ROCPRIM_DEVICE ROCPRIM_INLINE
unsigned int bit_count(unsigned int x)
{
    return __popc(x);
}

/// \brief Bit count
///
/// Returns the number of bit of \p x set.
ROCPRIM_DEVICE ROCPRIM_INLINE
unsigned int bit_count(unsigned long long x)
{
    return __popcll(x);
}

/// @}
// end of group intrinsicsmodule

END_ROCPRIM_NAMESPACE

#endif // ROCPRIM_INTRINSICS_BIT_HPP_
