From: Martin Mares <mj@ucw.cz>
Date: Sat, 19 Apr 2008 15:02:05 +0000 (+0200)
Subject: Mention HAKMEM.
X-Git-Tag: printed~78
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=cf98750871c8a772991f5e32fe29fa7c879727dd;p=saga.git

Mention HAKMEM.
---

diff --git a/PLAN b/PLAN
index 2c44db9..f4a4f51 100644
--- a/PLAN
+++ b/PLAN
@@ -73,9 +73,6 @@ Related:
 
 Models:
 
-- bit tricks: reference to HAKMEM
-- add more context from thorup:aczero, also mention FP operations
-- Tarjan79 is mentioned by Pettie to define Pointer machines
 - add references to the C language
 - PM: unify yardsticks
 - all data structures should mention space complexity
diff --git a/biblio.bib b/biblio.bib
index f6f5aa1..f97c59c 100644
--- a/biblio.bib
+++ b/biblio.bib
@@ -1467,3 +1467,13 @@
   publisher = {Springer-Verlag},
   address = {London, UK},
 }
+
+@techreport { hakmem,
+    author = "Beeler, Michael and Gosper, R. William and Schroeppel, Rich",
+    title = "{HAKMEM}",
+    institution = "Massachusetts Institute of Technology",
+    year = "1972",
+    number = "239",
+    type = "Memo"
+}
+
diff --git a/ram.tex b/ram.tex
index 27e0222..ea64a87 100644
--- a/ram.tex
+++ b/ram.tex
@@ -850,6 +850,15 @@ in constant time. In practice we use the ``bit tricks'' as frequently called sub
 in an~encompassing algorithm, so we usually can spend a~lot of time on the precalculation
 of constants performed once during algorithm startup.
 
+\rem
+The history of combining arithmetic and logical operations to obtain fast programs for various
+interesting functions is blurred. Many of the ``bit tricks'' we have described have been
+discovered independently by numerous people in the early ages of digital computers.
+Since then, they have become a~part of the computer science folklore. Probably the
+earliest documented occurrence is in the 1972's memo of the MIT Artificial Intelligence
+Lab \cite{hakmem}. However, until the work of Fredman and Willard nobody seemed to
+realize the full consequences.
+
 %--------------------------------------------------------------------------------
 
 \section{Q-Heaps}\id{qheaps}%