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Perl
Perl Misc
Rounding up to the next .5
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[QUOTE="anno4000, post: 4837266"] You can base one on the other. Rounding to the nearest half can be seen as multiplying by two, then rounding to the nearest integer, then dividing by two again. Generalizing, you get sub round_to_multiple { my ( $x, $factor) = @_; $factor*sprintf '%.0f', $x/$factor; } which can be used as for ( map 0.1*$_, 0 .. 10 ) { printf "%s -> %s\n", $_, round_to_multiple( $_, 1/2); } Anno [/QUOTE]
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Rounding up to the next .5
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