Developer CD Series 1997 April: Mac OS SDK/Dev.CD Apr 97 SDK1.toast/Development Kits (Disc 1)/AppleScript/Sample Scripts/AppleScript Samples/Numerics/Round Off Example

Text File | 1993-12-08 | 640 b | 11 lines | [TEXT/ToyS]

set x to (("9776.552" as real) as string) -- string to real to string
-- the previous line shows how the number changes as it is coerced to a real
set y to "9776.552" -- this is the original string
9776.5519999999997 -- watch this when you compile it!  It no longer is 9776.552
-- the following displays values in the result window
-- x is the converted string, y is the original string
-- x = y is a string comparision, while the next one is a pair of reals
-- Finally, an example of how two numbers which don't suffer from round off
-- can equal one that does
{x, y, x = y, (x as real) = (y as real), 76.552 + 9700 = 9776.5519999999997}