[libre-riscv-dev] [Bug 279] inconsistency in 3.0B spec on definition of "equivalence" operator

bugzilla-daemon at libre-riscv.org bugzilla-daemon at libre-riscv.org
Sun Apr 5 05:19:43 BST 2020


Jacob Lifshay <programmerjake at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |programmerjake at gmail.com

--- Comment #1 from Jacob Lifshay <programmerjake at gmail.com> ---
In my opinion, both == and XNOR (as well as != and XOR) can be used to denote
the same operation, but with two different ways of thinking about it:

1. XNOR/XOR used when flipping bits, (carry-less) adding, LFSRs, etc.
2. ==/!= used when checking for same/different values.

So pick which one you use based on how you are thinking about it, perhaps with
a note about being the same as the other operator when relevant.


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