Y may be any numeric array.  X may be any numeric array. R is numeric. The value of R is the difference between X and Y.

This function is also known as Minus.

Example

      3 ¯2 4 0 - 2 1 ¯2 4
1 ¯3 6 ¯4
 
      2j3-.3j5  ⍝ (a+bi)-(c+di) = (a-c)+(b-d)i
1.7J¯2