Floating point computation "non-bug"

[Andreas Schwab]

Dave Elcock <dave@sias.com> writes:

|> Given that f1 is represented not as exactly 2.3, how does gcc manage to
|> turn that in to 23 when assigning to f2, but 22 when casting to int?

Because if you round (float)2.3*10 to float precision you get 23, but
rounded to double precision you get 22.99999952316284179688 which is less
than 23.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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