On Feb 12, 2022, at 18:47:45, Seymour J Metz wrote: > > I read "validate these into just two classes" as validate that the zone - not > 0-9 and transform A-F appropriately into either C or D. > How about Compare Packed to a packed zero?
But doesn't "just two classes" overlook a third class, that number which is neither positive nor negative? > ________________________________________ > From: Paul Gilmartin [[email protected]] > Sent: Saturday, February 12, 2022 8:40 PM > > On Feb 12, 2022, at 18:21:59, Seymour J Metz wrote: >> >> Why not CVB/LTR/BC? >> > It appears that the OP wants to "validate"; detect and > report the non-modal sign codes. > >> ________________________________________ >> >> On Feb 11, 2022, at 11:00:58, Dave Clark wrote: >>> >>> I know that x'F1' and x'C1' are positive and that x'D1' is >>> negative. But what if I find x'A1', x'B1', or x'E1' for overpunch values? >>> What is the shortest way (in terms of assembler instructions) to validate >>> these into just two classes -- positive and negative? -- gil
