>From: "Bresticker, Shalom" <shalom.bresticker@intel.com> >I also don't see why you think that with left-to-right associativity it becomes equivalent to * except for the left-most operator. If that were the case, then 2**3**2 would give you (2**3)*2 = 16, not 64. He means that (2**3)**2 is equivalent to 2**(3*2). If you left-associate your exponentiation, you get the same result as multiplying all of the exponents and then exponentiating once. I believe that other languages like FORTRAN right-associate exponentiation, and that one reason is that if you meant to left-associate, you could have just used multiplication. That still takes one set of parentheses, but forcing right-association with a left-associative convention takes a set of parentheses for each exponent. I might have brought this up back when exponentiation was added to Verilog. >In these programming languages, it is a matter of definition. > >In any case, changing the associativity now would cause a problem of backwards compatibility, which is the main reason it won't be changed in SystemVerilog (There won't be any more 1364 as it has been merged into SystemVerilog.). Since Verilog-AMS probably took its conventions from SPICE, which probably took them from FORTRAN, it probably right-associates. So this would be an incompatibility between the languages. Steven Sharp sharp@cadence.com -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.Received on Mon Oct 26 23:21:34 2009
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