Fixed a bug in isNegate intrinsified code, fixed negation for doubles (handling of negative zeros...

runtime/lib/double.dart

Index: runtime/lib/double.dart
===================================================================
--- runtime/lib/double.dart	(revision 3960)
+++ runtime/lib/double.dart	(working copy)
@@ -48,6 +48,10 @@
   double remainder_(double other) native "Double_remainder";
 
   double operator negate() {
+    if (this == 0.0) {
+      // -0.0 is canonicalized by the VM's parser, therefore no cycles.

[regis, 2012/02/06 21:45:19]

I do not understand this comment. Does it mean that 'this' cannot be -0.0? I
guess it can, since you are calling isNegative() below.

[srdjan, 2012/02/06 22:07:24]

Yes, it can, but it is important that -0.0 is not translated into literal 0.0
and negate operation, otherwise we would have a cycle where negate calls
negate..

+      return isNegative() ? 0.0 : -0.0;
+    }
     return 0.0 - this;
   }
   bool operator ==(other) {