How many logic levels does floating-point addition require?

Peter-Michael Seidel, Guy Even. How many logic levels does floating-point addition require?. In ICCD. pages 142-149, 1998. [doi]

@inproceedings{SeidelE98,
  title = {How many logic levels does floating-point addition require?},
  author = {Peter-Michael Seidel and Guy Even},
  year = {1998},
  doi = {10.1109/ICCD.1998.727035},
  url = {http://doi.ieeecomputersociety.org/10.1109/ICCD.1998.727035},
  researchr = {https://researchr.org/publication/SeidelE98},
  cites = {0},
  citedby = {0},
  pages = {142-149},
  booktitle = {ICCD},
}