The following program produced the output shown below the program!
[Smarteiffel snapshot of Jan 13; gcc 4.4.0]
============================================
class TEST
-- program testing accumulating rounding problems
creation {} program
feature {}
program
is
local x : REAL_64;
delta_x : REAL_64; -- x increment used for a numerical
solution
do
from delta_x := 0.01;
until x > 100
loop
if x ~= x.rounded
then
std_output.put_real_format(x, 2);
std_output.put_new_line;
end
x := x + delta_x;
end
end
end
=======================================
1.00
2.00
18.00
43.00
72.00
=======================================
I can change this to a program which produces the required results. So
that is not the problem.
Introducing a test like the code for "~=" with differing values for the
exponent of 2, produces a number of sets of output values!
Puzzling!
Regards
Frank Salter
