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/***************************************************************************************************
* Copyright (c) 2023 - 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: BSD-3-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************************************/
#pragma once
#if defined(__CUDACC__) || defined(_NVHPC_CUDA)
# define CUTE_HOST_DEVICE __forceinline__ __host__ __device__
# define CUTE_DEVICE __forceinline__ __device__
# define CUTE_HOST __forceinline__ __host__
#else
# define CUTE_HOST_DEVICE inline
# define CUTE_DEVICE inline
# define CUTE_HOST inline
#endif // CUTE_HOST_DEVICE, CUTE_DEVICE
#if defined(__CUDACC_RTC__)
# define CUTE_HOST_RTC CUTE_HOST_DEVICE
#else
# define CUTE_HOST_RTC CUTE_HOST
#endif
#if !defined(__CUDACC_RTC__) && !defined(__clang__) && \
(defined(__CUDA_ARCH__) || defined(_NVHPC_CUDA))
# define CUTE_UNROLL #pragma unroll
# define CUTE_NO_UNROLL #pragma unroll 1
#elif defined(__CUDACC_RTC__) || defined(__clang__)
# define CUTE_UNROLL _Pragma("unroll")
# define CUTE_NO_UNROLL _Pragma("unroll 1")
#else
# define CUTE_UNROLL
# define CUTE_NO_UNROLL
#endif // CUTE_UNROLL
#if defined(__CUDA_ARCH__) || defined(_NVHPC_CUDA)
# define CUTE_INLINE_CONSTANT static const __device__
#else
# define CUTE_INLINE_CONSTANT static constexpr
#endif
// __grid_constant__ was introduced in CUDA 11.7.
#if ((__CUDACC_VER_MAJOR__ >= 12) || ((__CUDACC_VER_MAJOR__ == 11) && (__CUDACC_VER_MINOR__ >= 7)))
# define CUTE_GRID_CONSTANT_SUPPORTED
#endif
// __grid_constant__ can be enabled only on SM70+.
#if (defined(__CUDA_ARCH__) && (__CUDA_ARCH__ >= 700))
# define CUTE_GRID_CONSTANT_ENABLED
#endif
#if ! defined(CUTE_GRID_CONSTANT)
# if defined(CUTE_GRID_CONSTANT_SUPPORTED) && defined(CUTE_GRID_CONSTANT_ENABLED)
# define CUTE_GRID_CONSTANT __grid_constant__
# else
# define CUTE_GRID_CONSTANT
# endif
#endif
// Some versions of GCC < 11 have trouble deducing that a
// function with "auto" return type and all of its returns in an "if
// constexpr ... else" statement must actually return. Thus, GCC
// emits spurious "missing return statement" build warnings.
// Developers can suppress these warnings by using the
// CUTE_GCC_UNREACHABLE macro, which must be followed by a semicolon.
// It's harmless to use the macro for other GCC versions or other
// compilers, but it has no effect.
#if ! defined(CUTE_GCC_UNREACHABLE)
# if defined(__GNUC__)
# define CUTE_GCC_UNREACHABLE __builtin_unreachable()
# else
# define CUTE_GCC_UNREACHABLE
# endif
#endif
#if defined(_MSC_VER)
// Provides support for alternative operators 'and', 'or', and 'not'
# include <iso646.h>
#endif // _MSC_VER
#if defined(__CUDACC_RTC__)
# define CUTE_STL_NAMESPACE cuda::std
# define CUTE_STL_NAMESPACE_IS_CUDA_STD
#else
# define CUTE_STL_NAMESPACE std
#endif
//
// Assertion helpers
//
#if defined(__CUDACC_RTC__)
# include <cuda/std/cassert>
#else
# include <cassert>
#endif
#define CUTE_STATIC_V(x) decltype(x)::value
#define CUTE_STATIC_ASSERT static_assert
#define CUTE_STATIC_ASSERT_V(x,...) static_assert(decltype(x)::value, ##__VA_ARGS__)
// Fail and print a message. Typically used for notification of a compiler misconfiguration.
#if defined(__CUDA_ARCH__)
# define CUTE_INVALID_CONTROL_PATH(x) assert(0 && x); printf(x); __brkpt()
#else
# define CUTE_INVALID_CONTROL_PATH(x) assert(0 && x); printf(x)
#endif
//
// IO
//
#if !defined(__CUDACC_RTC__)
# include <cstdio>
# include <iostream>
# include <iomanip>
#endif
//
// Support
//
#include <cute/util/type_traits.hpp>
//
// Basic types
//
#include <cute/numeric/numeric_types.hpp>
//
// Debugging utilities
//
#include <cute/util/print.hpp>
#include <cute/util/debug.hpp>
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