initial commit

xxhash.hh

@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * (c) 2025, Konstantin Demin
+ */
+
+#ifndef INCLUDE_XXHASH_HH
+#define INCLUDE_XXHASH_HH 1
+
+#include <limits.h>
+#if LONG_MAX == INT_MAX
+  #define XXH_NO_LONG_LONG
+#endif
+
+// #define XXH_NO_EXTERNC_GUARD
+
+#define XXH_NO_STDLIB
+#define XXH_STATIC_LINKING_ONLY
+
+#define XXH_NO_XXH3
+
+#define XXH_NO_INLINE_HINTS 1
+#define XXH_SIZE_OPT 2
+
+#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__)
+  #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    #define XXH_CPU_LITTLE_ENDIAN 1
+  #endif
+#endif
+
+#if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__)
+  #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+    #define XXH_CPU_LITTLE_ENDIAN 0
+  #endif
+#endif
+
+#ifdef USE_BUNDLED_XXHASH
+  #include "xxhash.h"
+#else /* !USE_BUNDLED_XXHASH */
+  #include <xxhash.h>
+#endif /* USE_BUNDLED_XXHASH */
+
+#ifndef XXH_NO_LONG_LONG
+  #define xxhash_t XXH64_hash_t
+#else
+  #define xxhash_t XXH32_hash_t
+#endif
+
+xxhash_t xxhash(const void * input, size_t len, xxhash_t seed = 0);
+
+#endif /* INCLUDE_XXHASH_HH */