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53 lines
1.2 KiB
53 lines
1.2 KiB
11 years ago
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/*
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* Copyright 2008-2012 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <thrust/detail/cstdint.h>
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// functions to handle memory alignment
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namespace thrust
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{
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namespace detail
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{
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namespace util
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{
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template <typename T>
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T * align_up(T * ptr, detail::uintptr_t bytes)
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{
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return (T *) ( bytes * (((detail::uintptr_t) ptr + (bytes - 1)) / bytes) );
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}
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template <typename T>
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T * align_down(T * ptr, detail::uintptr_t bytes)
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{
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return (T *) ( bytes * (detail::uintptr_t(ptr) / bytes) );
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}
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template <typename T>
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bool is_aligned(T * ptr, detail::uintptr_t bytes = sizeof(T))
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{
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return detail::uintptr_t(ptr) % bytes == 0;
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}
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} // end namespace util
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} // end namespace detail
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} // end namespace thrust
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