A RECURSIVE CARRY-LOOKAHEAD CARRY-SELECT HYBRID ADDER/

Authors
KANTABUTRA V
Citation
V. Kantabutra, A RECURSIVE CARRY-LOOKAHEAD CARRY-SELECT HYBRID ADDER/, I.E.E.E. transactions on computers, 42(12), 1993, pp. 1495-1499
Citations number
15
Categorie Soggetti
Computer Sciences","Engineering, Eletrical & Electronic","Computer Science Hardware & Architecture
Journal title
I.E.E.E. transactions on computers → ACNP
ISSN journal
00189340
Volume
42
Issue
12
Year of publication
1993
Pages
1495 - 1499
Database
ISI
SICI code
0018-9340(1993)42:12<1495:ARCCHA>2.0.ZU;2-0
Abstract
We present a very fast adder for double-precision mantissas, which is an improvement on Lynch and Swartzlander's Spanning Tree Carry Lookahe ad Adder or Redundant Cell Adder (IEEE Trans. Comput., Aug. 1992 and I EEE ARITH10 Symp., 1991) which was implemented in AMD's Am29050 microp rocessor. Our adder is faster than theirs mainly because we use Manche ster carry chains of various lengths instead of chains of all the same length.