A. use the Round Up tool (Spatial Analyst), then the Round Down tool (Spatial Analyst)
B. use the Round Down tool (Spatial Analyst), then the Round Up tool (Spatial Analyst)
C. use the Plus tool (Spatial Analyst) to add 1. then the Minus tool (Spatial Analyst) to subtract 0.5
D. use the Plus tool (Spatial Analyst) to add 0.5, then the int tool (Spatial Analyst) to
truncate to the nearest integer