Why does the order of addition matter? 
DB<8> printf '%.20f', 0.688
0.68799999999999994493
DB<9> printf '%.20f', 0.688 + 0.023
0.71099999999999996536
DB<10> printf '%.20f', 0.688 + 0.023  + 0.289
1.00000000000000000000
DB<11> printf '%.20f', 0.688 + 0.289 + 0.023
0.99999999999999988898
PS and thanks for the prompt answer!

In reply to Re^2: $var == 1 fails when $var = 1 by mjlush
in thread $var == 1 fails when $var = 1 by mjlush

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