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Unified Diff: runtime/lib/math_patch.dart

Issue 270743004: Refactor and improve code for pow. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: Created 6 years, 7 months ago
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Index: runtime/lib/math_patch.dart
===================================================================
--- runtime/lib/math_patch.dart (revision 35942)
+++ runtime/lib/math_patch.dart (working copy)
@@ -19,6 +19,11 @@
if (exponent == 0.0) {
return 1.0; // ECMA-262 15.8.2.13
}
+ // Speed up simple cases.
+ if (exponent == 1.0) return base;
+ if (exponent == 2.0) return base * base;
+ if (exponent == 3.0) return base * base * base;
+
if (base == 1.0) return 1.0;
if (base.isNaN || exponent.isNaN) {
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