| zero | Get the additive identity element for the type of x (x can also specify the type itself).  | 
| {math} | R# Documentation | 
      
        require(R);
                               
    
#' the R# math module
imports "math" from "njl";
                           
the R# math module
the R# math module
| zero | Get the additive identity element for the type of x (x can also specify the type itself).  |