Marshall
Created page with "In APL, a number is a scalar array representing a mathematical wikipedia:number. Numbers and characters were the only possible element types in APL\360 and remain the basic data types in modern APLs. In addition to quantities for computation, they are used to represent Booleans (0 and 1) and indices. Numeric operations may be subject to floating-point rounding and comparison tolerance. Traditionally, APL provides only one user-visib..."