rubinius/rubinius — comment on commit e6938a0d9dfb8e53dcca2784926c4c6a663a7a78
File:  line 0
By dbussink:

MRI has the same behavior, so if they are bugs, they are platform bugs. Looks to me that they don't make a difference between positive and negative zero. I've verified the specs pass on both MRI and Rubinius with this change.