53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
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// Copyright 2014 The Crashpad Authors. All rights reserved.
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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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#ifndef CRASHPAD_UTIL_NUMERIC_INT128_H_
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#define CRASHPAD_UTIL_NUMERIC_INT128_H_
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#include <stdint.h>
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#include "build/build_config.h"
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namespace crashpad {
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//! \brief Stores a 128-bit quantity.
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//!
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//! This structure is organized so that 128-bit quantities are laid out in
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//! memory according to the system’s natural byte order. If a system offers a
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//! native 128-bit type, it should be possible to bit_cast<> between that type
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//! and this one.
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//!
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//! This structure is designed to have the same layout, although not the same
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//! field names, as the Windows SDK’s `M128A` type from `<winnt.h>`. It is
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//! provided here instead of in `compat` because it is useful outside of the
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//! scope of data structures defined by the Windows SDK.
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struct uint128_struct {
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#if defined(ARCH_CPU_LITTLE_ENDIAN) || DOXYGEN
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//! \brief The low 64 bits of the 128-bit quantity.
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uint64_t lo;
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//! \brief The high 64 bits of the 128-bit quantity.
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uint64_t hi;
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#else
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uint64_t hi;
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uint64_t lo;
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#endif
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};
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static_assert(sizeof(uint128_struct) == 16, "uint128 must be 16 bytes");
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_NUMERIC_INT128_H_
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