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/*
* Copyright 2008-2013 NVIDIA Corporation
*
* 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.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/detail/cstdint.h>
// functions to handle memory alignment
THRUST_NAMESPACE_BEGIN
namespace detail
{
namespace util
{
template<typename T>
__host__ __device__
T *align_up(T * ptr, detail::uintptr_t bytes)
{
return (T *) ( bytes * (((detail::uintptr_t) ptr + (bytes - 1)) / bytes) );
}
template<typename T>
__host__ __device__
T *align_down(T * ptr, detail::uintptr_t bytes)
{
return (T *) ( bytes * (detail::uintptr_t(ptr) / bytes) );
}
template<typename T>
__host__ __device__
bool is_aligned(T * ptr, detail::uintptr_t bytes = sizeof(T))
{
return detail::uintptr_t(ptr) % bytes == 0;
}
} // end namespace util
} // end namespace detail
THRUST_NAMESPACE_END
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