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Unified Diff: runtime/lib/typed_data.dart

Issue 916153002: Improve _toInt64() and _toUint64() conversions in TypedData. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: Created 5 years, 10 months ago
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Index: runtime/lib/typed_data.dart
===================================================================
--- runtime/lib/typed_data.dart (revision 43696)
+++ runtime/lib/typed_data.dart (working copy)
@@ -3588,12 +3588,16 @@
int _toInt64(int value) {
- return _toInt(value, 0xFFFFFFFFFFFFFFFF); // TODO(regis): Avoid bigint mask.
+ // Avoid bigint mask when possible.
+ return (ClassID.getID(value) == ClassID.cidBigint) ?
+ _toInt(value, 0xFFFFFFFFFFFFFFFF) : value;
}
int _toUint64(int value) {
- return value & 0xFFFFFFFFFFFFFFFF; // TODO(regis): Avoid bigint mask.
+ // Avoid bigint mask when possible.
+ return (ClassID.getID(value) == ClassID.cidBigint) ?
+ _toInt(value, 0xFFFFFFFFFFFFFFFF) : value;
}
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