58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* See endianconv.c top comments for more information
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*
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* ----------------------------------------------------------------------------
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*
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* Copyright (c) 2011-Present, Redis Ltd.
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* All rights reserved.
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*
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* Licensed under your choice of the Redis Source Available License 2.0
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* (RSALv2) or the Server Side Public License v1 (SSPLv1).
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*/
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#ifndef __ENDIANCONV_H
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#define __ENDIANCONV_H
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#include "config.h"
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#include <stdint.h>
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void memrev16(void *p);
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void memrev32(void *p);
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void memrev64(void *p);
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uint16_t intrev16(uint16_t v);
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uint32_t intrev32(uint32_t v);
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uint64_t intrev64(uint64_t v);
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/* variants of the function doing the actual conversion only if the target
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* host is big endian */
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#if (BYTE_ORDER == LITTLE_ENDIAN)
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#define memrev16ifbe(p) ((void)(0))
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#define memrev32ifbe(p) ((void)(0))
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#define memrev64ifbe(p) ((void)(0))
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#define intrev16ifbe(v) (v)
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#define intrev32ifbe(v) (v)
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#define intrev64ifbe(v) (v)
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#else
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#define memrev16ifbe(p) memrev16(p)
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#define memrev32ifbe(p) memrev32(p)
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#define memrev64ifbe(p) memrev64(p)
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#define intrev16ifbe(v) intrev16(v)
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#define intrev32ifbe(v) intrev32(v)
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#define intrev64ifbe(v) intrev64(v)
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#endif
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/* The functions htonu64() and ntohu64() convert the specified value to
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* network byte ordering and back. In big endian systems they are no-ops. */
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#if (BYTE_ORDER == BIG_ENDIAN)
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#define htonu64(v) (v)
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#define ntohu64(v) (v)
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#else
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#define htonu64(v) intrev64(v)
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#define ntohu64(v) intrev64(v)
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#endif
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#ifdef REDIS_TEST
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int endianconvTest(int argc, char *argv[], int flags);
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#endif
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#endif
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