From c55fba8ab2a1c9d3df65eda4a5a1e957f4aa1f78 Mon Sep 17 00:00:00 2001 From: Andrew Lee Date: Sun, 19 Apr 2020 17:19:32 -0400 Subject: Inital commit --- .../Runtime/Utilities/HashUtility.cs | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Library/PackageCache/com.unity.timeline@1.2.13/Runtime/Utilities/HashUtility.cs (limited to 'Library/PackageCache/com.unity.timeline@1.2.13/Runtime/Utilities/HashUtility.cs') diff --git a/Library/PackageCache/com.unity.timeline@1.2.13/Runtime/Utilities/HashUtility.cs b/Library/PackageCache/com.unity.timeline@1.2.13/Runtime/Utilities/HashUtility.cs new file mode 100644 index 0000000..81fa940 --- /dev/null +++ b/Library/PackageCache/com.unity.timeline@1.2.13/Runtime/Utilities/HashUtility.cs @@ -0,0 +1,51 @@ +namespace UnityEngine.Timeline +{ + static class HashUtility + { + // Note. We could have used "params int[] hashes" but we want to avoid allocating. + + public static int CombineHash(this int h1, int h2) + { + return h1 ^ (int)(h2 + 0x9e3779b9 + (h1 << 6) + (h1 >> 2)); // Similar to c++ boost::hash_combine + } + + public static int CombineHash(int h1, int h2, int h3) + { + return CombineHash(h1, h2).CombineHash(h3); + } + + public static int CombineHash(int h1, int h2, int h3, int h4) + { + return CombineHash(h1, h2, h3).CombineHash(h4); + } + + public static int CombineHash(int h1, int h2, int h3, int h4, int h5) + { + return CombineHash(h1, h2, h3, h4).CombineHash(h5); + } + + public static int CombineHash(int h1, int h2, int h3, int h4, int h5, int h6) + { + return CombineHash(h1, h2, h3, h4, h5).CombineHash(h6); + } + + public static int CombineHash(int h1, int h2, int h3, int h4, int h5, int h6, int h7) + { + return CombineHash(h1, h2, h3, h4, h5, h6).CombineHash(h7); + } + + public static int CombineHash(int[] hashes) + { + if (hashes == null || hashes.Length == 0) + return 0; + + var h = hashes[0]; + for (int i = 1; i < hashes.Length; ++i) + { + h = CombineHash(h, hashes[i]); + } + + return h; + } + } +} -- cgit v1.2.3