53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* Copyright (C) 2015 The Android Open Source Project
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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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#ifndef __CUTILS_ENDIAN_H
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#define __CUTILS_ENDIAN_H
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#if defined(__linux__) && !defined(TEST_CUTILS_ENDIAN_H)
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#include <endian.h>
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#else
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#if !defined(__BYTE_ORDER__)
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/* gcc and clang predefine __BYTE_ORDER__, so this should never happen */
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#error Compiler does not define __BYTE_ORDER__
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define htobe16(x) (x)
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#define htobe32(x) (x)
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#define htobe64(x) (x)
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#define htole16(x) __builtin_bswap16(x)
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#define htole32(x) __builtin_bswap32(x)
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#define htole64(x) __builtin_bswap64(x)
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#else
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#define htobe16(x) __builtin_bswap16(x)
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#define htobe32(x) __builtin_bswap32(x)
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#define htobe64(x) __builtin_bswap64(x)
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#define htole16(x) (x)
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#define htole32(x) (x)
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#define htole64(x) (x)
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#endif /* __BYTE_ORDER__ */
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#define be16toh(x) htobe16(x)
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#define le16toh(x) htole16(x)
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#define be32toh(x) htobe32(x)
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#define le32toh(x) htole32(x)
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#define be64toh(x) htobe64(x)
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#define le64toh(x) htole64(x)
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#endif /* defined(__linux__) */
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#endif /* __CUTILS_ENDIAN_H */
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