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/***************************************************************************************************
* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************************************/
/*!
\file
\brief Defines conversion operations among Fragments of different base type.
*/
#pragma once
#include <cutlass/fragment.h>
namespace cutlass {
////////////////////////////////////////////////////////////////////////////////////////////////////
template <typename InputFragment_, typename OutputFragment_>
struct Convert {};
////////////////////////////////////////////////////////////////////////////////////////////////////
template <typename InputScalar_, typename OutputScalar_, int kScalars_>
struct Convert<Fragment<InputScalar_, kScalars_>, Fragment<OutputScalar_, kScalars_> > {
/// The input fragment.
typedef Fragment<InputScalar_, kScalars_> InputFragment;
/// The output fragment.
typedef Fragment<OutputScalar_, kScalars_> OutputFragment;
/// Ctor.
CUTLASS_DEVICE Convert() {}
/// Transform a fragment.
CUTLASS_DEVICE void transform(InputFragment const& src, OutputFragment& dst) {
transform(src, 0, dst);
}
/// Transform a fragment.
template <typename Fragment_>
CUTLASS_DEVICE void transform(Fragment_ const& src, int offset, OutputFragment& dst) {
for (int i = 0; i < kScalars_; ++i) {
dst[i] = static_cast<OutputScalar_>(src[i + offset]);
}
}
};
////////////////////////////////////////////////////////////////////////////////////////////////////
template <typename Fragment_>
struct Copy {
/// The input fragment.
typedef Fragment_ InputFragment;
/// The output fragment.
typedef Fragment_ OutputFragment;
/// Ctor.
CUTLASS_DEVICE Copy() {}
/// Transform a fragment.
CUTLASS_DEVICE void transform(Fragment_ const& src, Fragment_& dst) { transform(src, 0, dst); }
/// Transform a fragment.
template <typename InputFragment_>
CUTLASS_DEVICE void transform(InputFragment_ const& src, int offset, Fragment_& dst) {
if (sizeof(typename Fragment_::Element) == 8) {
uint64_t const* src_ptr = reinterpret_cast<uint64_t const*>(&src[offset]);
uint64_t* dst_ptr = reinterpret_cast<uint64_t*>(&dst[0]);
for (int i = 0; i < sizeof(Fragment_) / 8; ++i) {
dst_ptr[i] = src_ptr[i];
}
} else {
uint32_t const* src_ptr = reinterpret_cast<uint32_t const*>(&src[offset]);
uint32_t* dst_ptr = reinterpret_cast<uint32_t*>(&dst[0]);
for (int i = 0; i < sizeof(Fragment_) / 4; ++i) {
dst_ptr[i] = src_ptr[i];
}
}
}
};
////////////////////////////////////////////////////////////////////////////////////////////////////
} // namespace cutlass
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