Info Catalog dc: Arithmetic dc: Top dc: Registers

dc: Stack Control

 
 5 Stack Control
 ***************
 
 'c'
      Clears the stack, rendering it empty.
 
 'd'
      Duplicates the value on the top of the stack, pushing another copy
      of it.  Thus, '4d*p' computes 4 squared and prints it.
 
 'r'
      Reverses the order of (swaps) the top two values on the stack.
      (This can also be accomplished with the sequence 'SaSbLaLb'.)
      (This command is a GNU extension.)
 
 'R'
      Pops the top-of-stack as an integer N.  Cyclically rotates the top
      N items on the updated stack.  If N is positive, then the rotation
      direction will make the topmost element the second-from top; if N
      is negative, then the rotation will make the topmost element the
      N-th element from the top.  If the stack depth is less than N then
      the entire stack is rotated (in the appropriate direction), without
      any error being reported.  (This command is a GNU extension.)
 

Info Catalog dc: Arithmetic dc: Top dc: Registers