floor : Java Glossary

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floor
To take a float or double and want the corresponding integer (possibly as a float, double, int or long) there are four basic algorithms you might use: round, ceil, floor or truncate. With floor, numbers are always rounded down to the next lowest integer. Use Math.floor and floored division.
value floor
-1.6 -2
-1.5 -2
-1.4 -2
+1.4 +1
+1.5 +1
+1.6 +1
ceil
division
floating point
modulus
round
truncate
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