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int iceil(fixed x)
Rounds x up and returns the result as an integer.
See the article on Rounding for all rounding modes.
iceil(2.3) -> 3 iceil(3.8) -> 4 iceil(5.5) -> 6 iceil(-2.3) -> -2 iceil(-3.8) -> -3 iceil(-5.5) -> -5