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Side by Side Diff: packages/quiver/lib/src/core/hash.dart

Issue 1400473008: Roll Observatory packages and add a roll script (Closed) Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master
Patch Set: Created 5 years, 2 months ago
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1 // Copyright 2013 Google Inc. All Rights Reserved. 1 // Copyright 2013 Google Inc. All Rights Reserved.
2 // 2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License. 4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at 5 // You may obtain a copy of the License at
6 // 6 //
7 // http://www.apache.org/licenses/LICENSE-2.0 7 // http://www.apache.org/licenses/LICENSE-2.0
8 // 8 //
9 // Unless required by applicable law or agreed to in writing, software 9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, 10 // distributed under the License is distributed on an "AS IS" BASIS,
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44 hash = 0x1fffffff & (hash + value); 44 hash = 0x1fffffff & (hash + value);
45 hash = 0x1fffffff & (hash + ((0x0007ffff & hash) << 10)); 45 hash = 0x1fffffff & (hash + ((0x0007ffff & hash) << 10));
46 return hash ^ (hash >> 6); 46 return hash ^ (hash >> 6);
47 } 47 }
48 48
49 int _finish(int hash) { 49 int _finish(int hash) {
50 hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3)); 50 hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));
51 hash = hash ^ (hash >> 11); 51 hash = hash ^ (hash >> 11);
52 return 0x1fffffff & (hash + ((0x00003fff & hash) << 15)); 52 return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
53 } 53 }
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