The proposal says 16.12.7 implies and iff properties A property is an implies if it has the form property_expr1 implies property_expr2 A property of this form evaluates to true if and only if either property_expr1 evaluates to false or property_expr2 evaluates to true. When property_expr1 and property_expr2 are boolean, then property_expr1 implies property_expr2 is similar to property_expr1 -> property_expr2. I think it is misleading to say that 'implies' is similar to '->' when both operands are boolean because 1. implies can still result in vacuous matches whereas '->' cannot. 2. when property_expr1 is 'x', property_expr1 -> property_expr2 will be 'x' whereas property_expr1 implies property_expr2 will be false. Tej ________________________________ From: owner-sv-ac@server.eda.org [mailto:owner-sv-ac@server.eda.org] On Behalf Of Bustan, Doron Sent: Saturday, October 06, 2007 11:28 PM To: sv-ac@server.eda-stds.org Subject: [sv-ac] LTL 1932 Hi, I 1. Replaced next[range] with eventually[range] 2. Add example for weak sequential property under not. 3. Change the definition for vacuity for weak sequential properties and until. I find it hard to get a good definition for until so I wrote a very conservative one that will not give unnecessarily false negatives. Doron --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -- This message has been scanned for viruses and dangerous content by MailScanner <http://www.mailscanner.info/> , and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.Received on Mon Oct 8 12:23:12 2007
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