Feature #10131

Updated by nobu (Nobuyoshi Nakada) almost 7 years ago

It happens too often to me that I want to calculate the greatest multiple of numeric r not greater than numeric x. This can be done by a simple operation below: 


     x, r = 3.7, 0.5 
     x.div(r).*(r) #=> 3.5 


     x, r = 41, 6 
     x.div(r).*(r) #=> 36 

 but I encounter this operation so often that I think it is an essential operation, and should be done as a single operation. Can any of the existing zero-ary operation be extended to take an optional argument to do this calculation? For example 


     3.7.floor(0.5) #=> 3.5 
     41.floor(6)      #=> 36