The multiple reclassify tools in the spatial analyst toolbox (Reclass, Lookup, Reclass by ASCII file, Reclass by table) do not support a floating point output raster. It would be great if this can be implemented.
The present workaround I follow is to multiply the required floating point numbers by a large number, run the reclass tools to create an integer output and then use the divide tool to get the required floating point raster.