sdk/lib/math/jenkins_smi_hash.dart - Issue 2880543002: Revert "Change some platform libraries to use `part of URI`."

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Side by Side Diff: sdk/lib/math/jenkins_smi_hash.dart

Issue 2880543002: Revert "Change some platform libraries to use `part of URI`." (Closed)

Patch Set: Created 3 years, 7 months ago

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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file	1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file

2 // for details. All rights reserved. Use of this source code is governed by a	2 // for details. All rights reserved. Use of this source code is governed by a

3 // BSD-style license that can be found in the LICENSE file.	3 // BSD-style license that can be found in the LICENSE file.

4 part of "dart:math";	4 part of dart.math;

5	5

6 /**	6 /**

7 * This is the [Jenkins hash function][1] but using masking to keep	7 * This is the [Jenkins hash function][1] but using masking to keep

8 * values in SMI range.	8 * values in SMI range.

9 *	9 *

10 * [1]: http://en.wikipedia.org/wiki/Jenkins_hash_function	10 * [1]: http://en.wikipedia.org/wiki/Jenkins_hash_function

11 *	11 *

12 * Use:	12 * Use:

13 * Hash each value with the hash of the previous value, then get the final	13 * Hash each value with the hash of the previous value, then get the final

14 * hash by calling finish.	14 * hash by calling finish.

(...skipping 17 matching lines...) Expand all Loading...
32 hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));	32 hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));

33 hash = hash ^ (hash >> 11);	33 hash = hash ^ (hash >> 11);

34 return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));	34 return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));

35 }	35 }

36	36

37 static int hash2(a, b) => finish(combine(combine(0, a), b));	37 static int hash2(a, b) => finish(combine(combine(0, a), b));

38	38

39 static int hash4(a, b, c, d) =>	39 static int hash4(a, b, c, d) =>

40 finish(combine(combine(combine(combine(0, a), b), c), d));	40 finish(combine(combine(combine(combine(0, a), b), c), d));

41 }	41 }

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