Stange problem with sprintf or trace display

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  • Posted by AJ_Oxley Mar 13, 2012
  • 1022 views

Hello gurus...
My app was adding up dollars and cents but did not balance.
A simplified example of why not is given below:

-- euphoria v4.0.3 windows 2011-06-24 13:43:18 
with type_check 
with trace 
with warning 
 
procedure test() 
   atom a1, a2, a3, a4, a5, a6 
   sequence s1 
   trace(1) 
   a1 = 0.77 
   a2 = a1 * 100 
   printf(1,"\na2 is " & sprintf("%2d",{a2}) & "\n") 
   -- now the strange part 
   a3 = 66.77 
   a4 = floor(a3) 
   a5 = a3 - a4 -- 0.77, same as a1 
   a6 = a5 * 100 -- trace says this is 77 
   printf(1,"\na6 is " & sprintf("%2d",{a6}) & "!\n") -- 76!! 
end procedure 
test() 
 
-- the problem exists whenever a6 > 01

This is whacky! any ideas?

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