bit.h

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/*
 *  Copyright 2019 Patrick Stotko
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
 
#ifndef STDGPU_BIT_H
#define STDGPU_BIT_H
 
#include <type_traits>
 
#include <stdgpu/platform.h>
#include <stdgpu/type_traits.h>
 
namespace stdgpu
{
 
template <typename T, STDGPU_DETAIL_OVERLOAD_IF(std::is_unsigned_v<T>)>
STDGPU_HOST_DEVICE bool
has_single_bit(const T number) noexcept;
 
template <typename T, STDGPU_DETAIL_OVERLOAD_IF(std::is_unsigned_v<T>)>
STDGPU_HOST_DEVICE T
bit_ceil(const T number) noexcept;
 
template <typename T, STDGPU_DETAIL_OVERLOAD_IF(std::is_unsigned_v<T>)>
STDGPU_HOST_DEVICE T
bit_floor(const T number) noexcept;
 
template <typename T, STDGPU_DETAIL_OVERLOAD_IF(std::is_unsigned_v<T>)>
STDGPU_HOST_DEVICE T
bit_mod(const T number, const T divider) noexcept;
 
template <typename T, STDGPU_DETAIL_OVERLOAD_IF(std::is_unsigned_v<T>)>
STDGPU_HOST_DEVICE T
bit_width(const T number) noexcept;
 
template <typename T, STDGPU_DETAIL_OVERLOAD_IF(std::is_unsigned_v<T>)>
STDGPU_HOST_DEVICE int
popcount(const T number) noexcept;
 
template <typename To,
          typename From,
          STDGPU_DETAIL_OVERLOAD_IF(sizeof(To) == sizeof(From) && std::is_trivially_copyable_v<To> &&
                                    std::is_trivially_copyable_v<From>)>
STDGPU_HOST_DEVICE To
bit_cast(const From& object) noexcept;
 
} // namespace stdgpu
 
#include <stdgpu/impl/bit_detail.h>
 
#endif // STDGPU_BIT_H