Subtracts s from the size and returns a reference to this size. Note that the result is truncated. Using a reference makes it possible to directly manipulate the height. Using a reference makes it possible to directly manipulate the width. Multiplies s by c and returns the result.
Multiplies s by c and returns the result.
Note that the result is truncated. Multiplies s by c and returns the result. See the license file included in the distribution for a complete license statement.