Emacs internals: Deconstructing Lisp_Object in C (Part 2)

2 comments

• praptak 1 hour ago
  SBCL uses a single zero bit to tag integers. This trick means the representation of n is just 2n, so you can add the values directly without any decoding.

  It obviously also means that all the other tag values have to use 1 as the last bit.
• alex_dev42 2 hours ago
  [flagged]