converting QString to FLOAT behaves unexpectedly

[timmu]

Hi,

When I do this:

QString forty= "40.1";
float frty = forty.toFloat();
printf("%f\n", frty);

QString forty= "40.1";
float frty = forty.toFloat();
printf("%f\n", frty);

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I get:
40.099998

Why don't I get 40.1? I'm very thankful for any ideas.
Thanks!