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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 13:40:54 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 13:40:54 +0000
commit317c0644ccf108aa23ef3fd8358bd66c2840bfc0 (patch)
treec417b3d25c86b775989cb5ac042f37611b626c8a /src/endianconv.h
parentInitial commit. (diff)
downloadredis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.tar.xz
redis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.zip
Adding upstream version 5:7.2.4.upstream/5%7.2.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/endianconv.h')
-rw-r--r--src/endianconv.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/endianconv.h b/src/endianconv.h
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+/* See endianconv.c top comments for more information
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * Copyright (c) 2011-2012, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Redis nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ENDIANCONV_H
+#define __ENDIANCONV_H
+
+#include "config.h"
+#include <stdint.h>
+
+void memrev16(void *p);
+void memrev32(void *p);
+void memrev64(void *p);
+uint16_t intrev16(uint16_t v);
+uint32_t intrev32(uint32_t v);
+uint64_t intrev64(uint64_t v);
+
+/* variants of the function doing the actual conversion only if the target
+ * host is big endian */
+#if (BYTE_ORDER == LITTLE_ENDIAN)
+#define memrev16ifbe(p) ((void)(0))
+#define memrev32ifbe(p) ((void)(0))
+#define memrev64ifbe(p) ((void)(0))
+#define intrev16ifbe(v) (v)
+#define intrev32ifbe(v) (v)
+#define intrev64ifbe(v) (v)
+#else
+#define memrev16ifbe(p) memrev16(p)
+#define memrev32ifbe(p) memrev32(p)
+#define memrev64ifbe(p) memrev64(p)
+#define intrev16ifbe(v) intrev16(v)
+#define intrev32ifbe(v) intrev32(v)
+#define intrev64ifbe(v) intrev64(v)
+#endif
+
+/* The functions htonu64() and ntohu64() convert the specified value to
+ * network byte ordering and back. In big endian systems they are no-ops. */
+#if (BYTE_ORDER == BIG_ENDIAN)
+#define htonu64(v) (v)
+#define ntohu64(v) (v)
+#else
+#define htonu64(v) intrev64(v)
+#define ntohu64(v) intrev64(v)
+#endif
+
+#ifdef REDIS_TEST
+int endianconvTest(int argc, char *argv[], int flags);
+#endif
+
+#endif