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project_6/cccl_upstream/libcudacxx/include/cuda/std/climits
EngineX CI 56fd68e7dd [INFRA] Import NVIDIA/CCCL upstream as optimization reference library
CCCL (CUDA C++ Core Libraries) provides:
- CUB: device/block/warp-level GPU primitives (reduce, scan, sort, topk)
- Thrust: high-level parallel algorithms (transform_reduce, sort, scan)
- libcudacxx: CUDA C++ standard library (atomics, barriers, memory)
- cudax: experimental features (memory resources, allocators)
- Tuning policies: per-SM hardware-specific algorithm parameters

Competition optimization vectors mapped to CCCL:
- Output TPS (83% weight): warp_reduce, block_reduce, device_topk
- Input TPS (14% weight): device_scan, block_load, prefetch
- Cache TPS (3% weight): prefix caching strategy patterns
- Memory (0.9 util): pooled/cached/buddy allocators

Source: https://github.com/NVIDIA/cccl (shallow clone, HEAD only)
License: Apache-2.0
2026-07-30 09:35:51 +00:00

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//===----------------------------------------------------------------------===//
//
// Part of libcu++, the C++ Standard Library for your entire system,
// under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#ifndef _CUDA_STD_CLIMITS
#define _CUDA_STD_CLIMITS
#include <cuda/std/detail/__config>
#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 _CCCL_HOSTED()
# include <climits>
#else // ^^^ _CCCL_HOSTED() ^^^ / vvv _CCCL_FREESTANDING() vvv
# define _CCCL_CHAR_IS_UNSIGNED() ('\xff' > 0) // CURSED
# define CHAR_BIT 8
# define SCHAR_MIN (-128)
# define SCHAR_MAX 127
# define UCHAR_MAX 255
# if _CCCL_CHAR_IS_UNSIGNED()
# define CHAR_MIN 0
# define CHAR_MAX UCHAR_MAX
# else
# define CHAR_MIN SCHAR_MIN
# define CHAR_MAX SCHAR_MAX
# endif
# define SHRT_MIN (-SHRT_MAX - 1)
# define SHRT_MAX 0x7fff
# define USHRT_MAX 0xffff
# define INT_MIN (-INT_MAX - 1)
# define INT_MAX 0x7fffffff
# define UINT_MAX 0xffffffff
# define LONG_MIN (-LONG_MAX - 1)
# ifdef __LP64__
# define LONG_MAX LLONG_MAX
# define ULONG_MAX ULLONG_MAX
# else
# define LONG_MAX INT_MAX
# define ULONG_MAX UINT_MAX
# endif
# define LLONG_MIN (-LLONG_MAX - 1)
# define LLONG_MAX 0x7fffffffffffffffLL
# define ULLONG_MAX 0xffffffffffffffffUL
#endif // _CCCL_FREESTANDING()
#endif // _CUDA_STD_CLIMITS