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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