93 lines
3.4 KiB
C++
93 lines
3.4 KiB
C++
/***************************************************************************************************
|
|
* Copyright (c) 2017 - 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.
|
|
*
|
|
**************************************************************************************************/
|
|
/*!
|
|
\file
|
|
\brief Top-level include for all CUTLASS numeric types.
|
|
*/
|
|
|
|
/*
|
|
Note: CUTLASS 3x increases the host compiler requirements to C++17. However, certain
|
|
existing integrations of CUTLASS require C++11 host compilers.
|
|
|
|
Until this requirement can be lifted, certain headers with this annotation are required
|
|
to be remain consistent with C++11 syntax.
|
|
|
|
C++11 compatibility is enforced by `cutlass_test_unit_core_cpp11`.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "cutlass/cutlass.h"
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
namespace cutlass {
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
/// Defines the size of an element in bits
|
|
template <typename T>
|
|
struct sizeof_bits {
|
|
static constexpr int value = int(sizeof(T) * 8);
|
|
};
|
|
|
|
template <typename T>
|
|
struct sizeof_bits<T const>: sizeof_bits<T> {};
|
|
|
|
template <>
|
|
struct sizeof_bits<void> {
|
|
static constexpr int value = 0;
|
|
};
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
/// Returns the number of bytes required to hold a specified number of bits
|
|
CUTLASS_HOST_DEVICE
|
|
CUTLASS_CONSTEXPR_IF_CXX17
|
|
int
|
|
bits_to_bytes(int bits) {
|
|
return (bits + 7) / 8;
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
template <class T>
|
|
struct is_subbyte {
|
|
static constexpr bool value = sizeof_bits<T>::value < 8;
|
|
};
|
|
|
|
template <class T>
|
|
struct is_subbyte<T const> : is_subbyte<T> {};
|
|
|
|
} // namespace cutlass
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////////////
|