mirror/ioccc
1
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix .gitignore, Makefile and README.md for /2019/dogon

Browse Source
This commit is contained in:
Landon Curt Noll committed 2023-03-25 02:28:06 -07:00
1 parent 9799758c7d
commit fe10437f5c
3 files changed
+178 -362
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

2019/dogon/.gitignore
+1
View File
@@ -1 +1,2 @@
apholife
prog
2019/dogon/Makefile
+147 -339
View File
@@ -1,14 +1,41 @@
#!/usr/bin/env make
#
# 2019 makefile
# IOCCC 2019 winning entry - dogon
################################################################################
#
# This work by Landon Curt Noll, Simon Cooper, and Leonid A. Broukhis
# is licensed under:
# Regarding individual entries:
#
# IOCCC winning entry code may not work on your system. Even with standards,
# conditions and build environments change, especially when it comes to more
# extreme code such you might find in an IOCCC winner. Moreover, what was
# allowed and liked in one IOCCC contest may no longer be liked/allowed in
# later IOCCC years.
#
# Corrections on winning author and fixing typos in remarks are VERY WELCOME.
#
# GitHub pull requests are welcome:
#
# If you have a patch that might make running an entry work in modern Unix-like
# environments, please create a GitHub pull request for the IOCCC judges to
# consider.
#
# Suggestions and corrections regarding Makefiles, winning author information,
# fixing typos in remarks, and code patches are welcome via opening a GitHub
# issue or better yet, by creating a GitHub pull request for the IOCCC judges
# to consider. To form a GitHub issue or GitHub pull, please visit:
#
# https://github.com/ioccc-src/winner
#
################################################################################
# This work by Landon Curt Noll and Leonid A. Broukhis is licensed under:
#
# Creative Commons Attribution-ShareAlike 3.0 Unported License.
#
# See: http://creativecommons.org/licenses/by-sa/3.0/
#############################
# shell used by this Makefile
#############################
@@ -19,262 +46,7 @@ SHELL= bash
# common tool locations
#######################
#
A2P= a2p
AR= ar
ASA= asa
AT= at
ATQ= atq
ATRM= atrm
AWK= awk
BANNER= banner
BASE64= base64
BASENAME= basename
BATCH= batch
BC= bc
BINHEX= binhex
BISON= bison
BUNZIP2= bunzip2
BZCAT= bzcat
BZCMP= bzcmp
BZDIFF= bzdiff
BZEGREP= bzegrep
BZFGREP= bzfgrep
BZGREP= bzgrep
BZIP2= bzip2
BZLESS= bzless
BZMORE= bzmore
C2PH= c2ph
C89= c89
C99= c99
CAL= cal
CALC= calc
CAT= cat
CD= cd
CHFLAGS= chflags
CHGRP= chgrp
CHMOD= chmod
CKSUM= cksum
CLANG= clang
CLANG_PLUSPLUS= clang++
CLEAR= clear
CMP= cmp
COL= col
COLLDEF= colldef
COLRM= colrm
COLUMN= column
COMPRESS= compress
CP= cp
CPIO= cpio
CPP= cpp
CRC32= crc32
CSH= csh
CSPLIT= csplit
CURL= curl
CUT= cut
C_PLUSPLUS= c++
C_PLUSPLUS_FILT= c++filt
DATE= date
DC= dc
DD= dd
DF= df
DIFF3= diff3
DIFF= diff
DIG= dig
DIRNAME= dirname
ED= ed
EGREP= egrep
ENV= env
EQN= eqn
ETAGS= etags
EXPECT= expect
EXPR= expr
FALSE= false
FGREP= fgrep
FILE= file
FIND2PERL= find2perl
FIND= find
FLEX= flex
FLEX_PLUSPLUS= flex++
FMT= fmt
FOLD= fold
FS_USAGE= fs_usage
FUNZIP= funzip
FUSER= fuser
GCC= gcc
GDIFFMK= gdiffmk
GENCAT= gencat
GENSTRINGS= genstrings
GETOPT= getopt
GETOPTS= getopts
GNUMAKE= gnumake
GREP= grep
GROFF= groff
GROFFER= groffer
GROG= grog
GROPS= grops
GROTTY= grotty
GUNZIP= gunzip
GVIM= gvim
GZCAT= gzcat
GZEXE= gzexe
GZIP_PROG= gzip
G_PLUSPLUS= g++
H2PH= h2ph
H2XS= h2xs
HASH= hash
HEAD= head
HOSTNAME_PROG= hostname
ICONV= iconv
ID= id
INDENT= indent
INFO= info
JOT= jot
KILL= kill
KSH= ksh
LAST= last
LD= ld
LEX= len
LINK= link
LN= ln
LS= ls
M4= m4
MAKE= make
MAN= man
MKDIR= mkdir
MKFIFO= mkfifo
MKTEMP= mktemp
MV= mv
NANO= nano
NASM= nasm
NEQN= neqn
NICE= nice
NL= nl
NM= nm
NOHUP= nohup
NROFF= nroff
NSLOOKUP= nslookup
OD= od
OPENSSL= openssl
PASTE= paste
PATCH= patch
PATHCHK= pathchk
PAX= pax
PERL= perl
PICO= pico
PR= pr
PRINTENV= printenv
PS= ps
PTAR= ptar
PTARDIFF= ptardiff
PTARGREP= ptargrep
PWD= pwd
PYDOC= pydoc
PYTHON= python
PYTHONW= pythonw
READLINK= readlink
RENICE= renice
RESET= reset
REV= rev
RI= ri
RM= rm
RMDIR= rmdir
RSYNC= rsync
RUBY= ruby
RVIM= rvim
SAY= say
SCP= scp
SCREEN= screen
SCRIPT= script
SDIFF= sdiff
SED= sed
SEQ= seq
SFTP= sftp
SH= sh
SHA1= sha1
SHA= sha
SHAR= shar
SHASUM5_18= shasum5.18
SHASUM= shasum
SIZE= size
SLEEP= sleep
SORT= sort
SSH= ssh
STAT= stat
STRIP= strip
STTY= stty
SUM= sum
SYNC= sync
TABS= tabs
TAIL= tail
TAR= tar
TEE= tee
TEST= test
TFTP= tftp
TIDY= tidy
TIME= time
TOP= top
TOUCH= touch
TPUT= tout
TPUT= tput
TR= tr
TROFF= troff
TRUE= true
TSET= tset
TSORT= tsort
UL= ul
UNAME= uname
UNCOMPRESS= uncompress
UNEXPAND= unexpand
UNIFDEF= unifdef
UNIFDEFALL= unifdefall
UNIQ= uniq
UNITS= units
UNLINK= unlink
UNZIP= unzip
UNZIPSFX= unzipsfx
UPTIME= uptime
UUDECODE= uudecode
UUENCODE= uuencode
UUIDGEN= uuidgen
VI= vi
VIEW= view
VIM= vim
VIMDIFF= vimdiff
W= w
WAIT4PATH= wait4path
WAIT= wait
WC= wc
WHAT= what
WHATIS= whatis
WHICH= which
WHO= who
WHOAMI= whoami
WHOIS= whois
WRTIE= write
XAR= xar
XARGS= xargs
XATTR= xattr
XXD= xxd
YACC= yacc
YES= yes
ZCAT= zcat
ZCMP= zcmp
ZDIFF= zdiff
ZEGREP= zegrep
ZFGREP= zfgrep
ZFORCE= zforce
ZGREP= zgrep
ZIP= zip
ZIPCLOAK= zipcloak
ZIPGREP= zipgrep
ZIPINFO= zipinfo
ZIPNOTE= zipnote
ZIPSPLIT= zipsplit
ZLESS= zless
ZMORE= zmore
ZNEW= znew
ZPRINT= zprint
ZSH= zsh
include ../../var.mk
# Set X11_LIBDIR to the directory where the X11 library resides
#
@@ -288,31 +60,28 @@ X11_LIBDIR= /opt/X11/lib
#X11_INCDIR= /usr/X11/include
X11_INCDIR= /opt/X11/include
# Compiler warnings
#
#CWARN=
#CWARN= -Wall
#CWARN= -Wall -Wextra
CWARN= -Wall -Wextra -pedantic ${CSILENCE}
#CWARN= -Wall -Wextra -Weverything
#CWARN= -Wall -Wextra -Weverything -pedantic
#CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
# Silence warnings that ${CWARN} would normally complain about
# Common C compiler warnings to silence
#
#CSILENCE=
#CSILENCE= -Wno-implicit-int
CSILENCE= -Wno-bitwise-op-parentheses -Wno-format -Wno-parentheses \
-Wno-shift-op-parentheses -Wno-sign-compare -Wno-unused-variable
CSILENCE= -Wno-bitwise-conditional-parentheses -Wno-bitwise-op-parentheses \
-Wno-deprecated-declarations -Wno-format -Wno-parentheses \
-Wno-shift-op-parentheses -Wno-sign-compare -Wno-unused-variable \
-Wno-main-return-type -Wno-return-type -Wno-unused-parameter
# compiler standard
# Common C compiler warning flags
#
#CWARN= ${CSILENCE}
#CWARN= -Wall ${CSILENCE}
#CWARN= -Wall -Wextra ${CSILENCE}
CWARN= -Wall -Wextra -pedantic ${CSILENCE}
# Compiler standard
#
#CSTD=
#CSTD= -ansi
#CSTD= -std=c11
CSTD= -std=c99
CSTD= -std=gnu17
# compiler bit architecture
# Compiler bit architecture
#
# Some entries require 32-bitness:
# ARCH= -m32
@@ -322,24 +91,23 @@ CSTD= -std=c99
#
# By default we assume nothing:
#
#ARCH=
ARCH= -march=native
ARCH=
# defines that are needed to compile
# Defines that are needed to compile
#
#CDEFINE=
#CDEFINE= -DIOCCC=26
CDEFINE= -DX=1280l -DY=1024l -DZ=0x20000000
# include files that are needed to compile
# Include files that are needed to compile
#
#CINCLUDE=
#CINCLUDE= -include stdlib.h
#CINCLUDE= -include stdio.h
#CINCLUDE= -include stdlib.h -include stdio.h
CINCLUDE= -I ${X11_INCDIR}
CINCLUDE= -I ${X11_INCDIR} -I ${X11_INCDIR}/X11
#CINCLUDE= `${SDL2_CONFIG} --cflags`
# optimization
# Optimization
#
# Most compiles will safely use -O2. Some can use only -O1 or -O.
# A few compilers have broken optimizers or this entry make break
@@ -352,39 +120,60 @@ CINCLUDE= -I ${X11_INCDIR}
#OPT= -O2
OPT= -O3
# default flags for ANSI C compilation
# Default flags for ANSI C compilation
#
CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT}
# Libraries needed to build
#
#LIBS=
#LIBS= -L ${X11_LIBDIR}
#LIBS= -lm
LIBS= -L ${X11_LIBDIR} -lX11
#LIBS= `${SDL2_CONFIG} --libs`
# ANSI compiler
#
# Set CC to the name of your ANSI compiler.
#
# Some entries seem to need gcc. If you have gcc, set
# both CC and MAY_NEED_GCC to gcc.
#
# If you do not have gcc, set CC to the name of your ANSI compiler, and
# set MAY_NEED_GCC to either ${CC} (and hope for the best) or to just :
# to disable such programs.
# C compiler to use
#
CC= cc
#CC=clang
MAY_NEED_GCC= gcc
#CC=gcc
# Compiler add-ons or replacements for clang only
#
ifeq ($(CC),clang)
#
CSILENCE+= -Wno-cast-align -Wno-comma -Wno-conditional-uninitialized \
-Wno-missing-prototypes -Wno-missing-variable-declarations \
-Wno-poison-system-directories -Wno-shadow -Wno-shorten-64-to-32 \
-Wno-sign-conversion -Wno-missing-noreturn
#
CWARN+= -Weverything
#
endif
# Specific add-ons or replacements for gcc only
#
ifeq ($(CC),gcc)
#
#CSILENCE+=
#
#CWARN+=
#
endif
##############################
# Special flags for this entry
##############################
#
OBJ= prog.o
DATA=
TARGET= prog
ENTRY= dogon
PROG= prog
#
OBJ= ${PROG}.o
CSRC= ${PROG}.o
DATA= glider.mc gotts-dots.mc infinite.mc infinite_10cell.mc infinite_5x5.mc \
infinite_minimal.mc jagged.mc message.mc metacatacryst.mc \
metapixel-parity64.mc mosquito5.mc unlimited-novelty.mc
TARGET= ${PROG} apholife
#
ALT_OBJ=
ALT_TARGET=
@@ -394,15 +183,22 @@ ALT_TARGET=
# build the entry
#################
#
all: ${TARGET} ${DATA}
all: data ${TARGET}
@${TRUE}
prog: prog.c
.PHONY: all alt data everything clean clobber install \
love haste waste maker easter_egg sandwich \
supernova deep_magic magic charon pluto
${PROG}: ${PROG}.c
${CC} ${CFLAGS} $< -o $@ ${LIBS}
apholife: apholife.c
${CC} ${CFLAGS} $< -o $@ ${LIBS}
# alternative executable
#
alt: ${ALT_TARGET}
alt: data ${ALT_TARGET}
@${TRUE}
# data files
@@ -410,15 +206,21 @@ alt: ${ALT_TARGET}
data: ${DATA}
@${TRUE}
# both all and alt
#
everything: all alt
###############
# utility rules
###############
#
everything: all alt
clean:
${RM} -f ${OBJ} ${ALT_OBJ}
@-if [ -f indent.c ]; then \
echo ${RM} -f indent.c; \
${RM} -f indent.c; \
fi
clobber: clean
${RM} -f ${TARGET} ${ALT_TARGET}
@@ -427,20 +229,28 @@ clobber: clean
echo 'ate sandwich'; \
fi
nuke: clobber
@${TRUE}
dist_clean: nuke
@${TRUE}
install:
@echo "Surely you are performing, Dr. May!"
@echo "Dr. Spock says that is not logical!"
@${TRUE}
# backwards compatibility
# you may be able to misunderstand the source by reading indent.c
#
build: all
@${TRUE}
indent.c: ${PROG}.c
@if which "${GINDENT}" >/dev/null 2>&1; then \
echo ${RM} -f $@; \
${RM} -f $@; \
echo "${GINDENT} < $< > $@"; \
${GINDENT} < $< > $@; \
elif which "${INDENT}" >/dev/null 2>&1; then \
echo ${RM} -f $@; \
${RM} -f $@; \
echo "${INDENT} < $< > $@"; \
${INDENT} < $< > $@; \
else \
echo "no intent tool found, ident $< yourself, sorry"; \
echo "exit 1"; \
exit 1; \
fi
##################
@@ -459,22 +269,19 @@ waste:
@echo 'haste'
@${TRUE}
make:
@echo 'Attend a maker faire'
maker:
@echo 'Participate in a maker faire'
@${TRUE}
easter_egg:
@echo you expected to often mis-understand this $${RANDOM} magic
@echo chongo '<was here>' "/\\oo/\\"
@echo Eggy
@echo "you expected to often misunderstand this $${RANDOM} magic"
@echo "chongo '<was here>' /\\oo/\\"
@echo "Eggy"
fabricate fashion form frame manufacture produce: make
@${TRUE}
sandwich:
sandwich: easter_egg
@if [ `id -u` -eq 0 ]; then \
echo 'Okay.'; \
echo $${RANDOM}`date +%s`$${RANDOM} > $@; \
echo "$${RANDOM}`date +%s`$${RANDOM}" > $@; \
else \
echo 'What? Make it yourself.'; \
exit 1; \
@@ -484,18 +291,19 @@ sandwich:
# as well as the West Coast Computer Faire and
# you might be confused different. :-)
#
supernova: nuke
supernova: sandwich
@-if [ -r .code_anal ]; then \
${RM} -f .code_anal_v6; \
else \
echo "planet deniers, like some members of the IAU, are so cute when they try to defend their logic"; \
fi
@echo A $@ helps ${MAKE} the elements that help form planets
@echo "A $@ helps ${MAKE} the elements that help form planets"
@${TRUE}
deep_magic:
deep_magic: supernova
@-if [ -r .code_anal ]; then \
ccode_analysis --deep_magic fc6b6af226b7cc598de3d48fc20ed0bd54f7b4f7f0f651a32b9cf8345b2a3b3f --FNV1a_hash_512_bit "prog"; \
ccode_analysis --deep_magic 7889066cdbdf09b0408021754586e895be641cc9be29e7eafd3ca65359541f17 \
--FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \
else \
echo "Wrong! Do it again!"; \
sleep 2; \
@@ -507,7 +315,7 @@ deep_magic:
magic: deep_magic
@-if [ -r .code_anal ]; then \
ccode_analysis --level 391581 --mode 216193 --FNV1a_hash_512_bit "prog"; \
ccode_analysis --level 20003 --mode 5717175 --FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \
else \
echo "If you don't eat yer meat, you can't have any pudding!"; \
echo "How can you have any pudding if you don't eat yer meat?!"; \
@@ -516,14 +324,14 @@ magic: deep_magic
# The IOCCC resident astronomer states
#
charon: supernova
@echo $@ is a dwarf planet
@echo dwarf is a type of planet
@echo therefore IAU, $@ is a planet
charon: magic
@echo "$@ is a dwarf planet"
@echo "dwarf is a type of planet"
@echo "therefore IAU, $@ is a planet"
pluto: supernova
pluto: charon
${MAKE} charon
@echo $@ is a dwarf planet
@echo dwarf is a type of planet
@echo therefore, $@ is a planet
@echo get used to having lots of planets becasue supernovae can ${MAKE} a lot of them
@echo "$@ is a dwarf planet"
@echo "dwarf is a type of planet"
@echo "therefore, $@ is a planet"
@echo "having lots of planets is good feature because supernovae can help ${MAKE} a lot of them"
2019/dogon/README.md
+30 -23
View File
@@ -1,35 +1,34 @@
# Best use of space and time
Gil Dogon
Gil Dogon
# To build:
## Judges' comments:
```sh
make
```
## To build:
### To run:
make all
### To use:
./prog < pattern.mc
NOTE: this entry will likely segfault under macOS if you even get it to compile.
```sh
./prog < pattern.mc
```
### Try:
./prog < glider.mc
```sh
./prog < glider.mc
./prog < infinite_5x5.mc
./prog < infinite_5x5.mc
./prog < mosquito5.mc
# Press the minus key a few times until you see white specks,
# then press space, and the ] key a few times.
./prog < mosquito5.mc
# Press the minus key a few times until you see white specks,
# then press space, and the ] key a few times.
./prog < message.mc
./prog < message.mc
```
### Selected Judges Remarks:
## Judges' comments:
[1991/davidguy](http://ioccc.org/years.html#1991_davidguy),
[2011/blakely](http://ioccc.org/years.html#2011_blakely),...
@@ -52,10 +51,13 @@ We truly have not much more to add, except two things:
In the interest of saving lives, this entry was not fuzzed.
## Author's comments:
### What is it?
Just run with no arguments on an X11-compatible system using one of the supplied input .mc files as standard input. Press '-' several time to zoom out if neccessary, then press space. For acceleration press ']' several times. Thats rather quick dont you think?
### Historical Timeline.
* 3.5 Billion years ago: Microrganism life appears on earth
* 3000 BC: Ankh symbol is used in Egyptian hyroglyphs to represent life.
* 1940s: John Von Neumann and Stanislav Ulam are interested in artificial life eventually kick starting research on Cellular Automata.
@@ -68,6 +70,7 @@ Just run with no arguments on an X11-compatible system using one of the supplied
Which brings us to the present moment in time.
### Full documentation and keys UI.
Yes, this program is Conway's game of life graphic simulator implementing Bill Gosper's hash life algorithm. The entry's UI is rather terse and somewhat obfuscated, as it should be. Also, when you accidentally, or not, press any of the keys not specified bellow, some stuff will happen or not, there is no guarantee whatsoever.
The program should be used as follows:
@@ -85,8 +88,8 @@ Notice that when going backward in time we ignore current timestep setting and j
There is a minimal text printout by the program, so you can know what Generation your are in(G:), Internal memory allocated till now (M:), and then which Level is the current macrocell (L) and which zoom Scale you are watching (S).
### Portability issues.
This entry is quite portable hopefully on most modern platforms. It assumes X Window support of course. More than 2GBytes memory is recommended. Configuration through makefile is provided for the display windows size and for the memory usage. The makefile provided configuration (Z=0x20000000) will need a system with 4GB DRAM to run nicely. There are several other salient assumptions though:
* The entry assumes sizeof(long)=8. However it actually almost avoids using any pointers which are 64 bits this days, in order to save space. On machines with sizeof(long)=4 try adding #define long long long ...
@@ -95,6 +98,7 @@ This entry is quite portable hopefully on most modern platforms. It assumes X Wi
* The entry heavily relies on bit complement arithmetic (you dont say!).
### Limitations.
Foremost the entry is very strict, unsafe and picky regarding its input. Anything straying from the standard Golly macrocell legal format will result in undefined behavior, meaning mostly a very defined core dump. Since aforementioned core is rather large by default (about 4Gb) it is highly recommended to 'set limit coredumpsize 0' in the shell before playing with fire ...
This entry needs quite a lot of memory to be effective, but by modern standards that is not too much. It does not do any garbage collection, so sooner or later memory will run out, resulting, surprise, surprise, in a core dump. On the plus side, this enables the nice time reversal feature... Anyway the amount of memory used can be controlled by the Makefile -DZ=... argument. With the default Z, the program will support in total about 240 million 64bit longs for the internal memory, which should be sufficient for about 100 million nodes+leafs, as each node is 3 longs and each leaf is 2.
@@ -107,6 +111,7 @@ In case cell memory did not run out, or your pattern did not grow too big, and y
If all of the above did not happen and result in the expected core dump, you will encounter the final limitation, which is the absence of an escape key. Just close the window or use ^C to exit ....
### Warnings.
Oh don't get me started on the torrent of litanies gcc emits when used with -Wall ! Does it think I have not memorized by heart C's precious operator precedence table (or at least have a cheatsheet nearby) that it dares suggest extra parentheses that would take the program over the limit ? And what if I do not use a variable here or there, do I have to pay extra tax for every orphaned variable?
There is the reasonable warning about some longs printed as ints but its OK too, trust me.
@@ -114,14 +119,17 @@ There is the reasonable warning about some longs printed as ints but its OK too,
Then there's the warning about 'gets' being unsafe, which is indeed the only one that appears by default in some versions of gcc linker. Yes Virginia, I know it is unsafe, and I would not recommend anyone using this entry as part of a web daemon, or a spaceship, no, Seriously Dont do that!
### Obfuscations.
Well almost none of the obfuscations are done on purpose, but mostly out of necessity, so all identifiers possible to be one character, are, and they are mercilessly reused. In the main There's even a nice little identifier first used as a global and then reused (shadowed) in the *same* scope, and this did not produce even a lile squeak of a warning from the compiler! Macro compression is raher sparingly used, however Magic numbers abound everywhere, and bit twiddling is magical too. Do you know for example why we have unsigned F=-1 ? (No warning there of course :) Hint:Later in the program you have F/=17. Did that make any sense? Further hint: print the resulting F in hexadecimal...
And yes, the layout hint involves a mix of the most trendy typographical character juxtaposed against a very ancient one, Not to mention the program includes some famous name dropping and documents itself as usual.
### Further spoilers, engineering, and obfuscation galore.
Those wait for you, curious and interpid reader, in the attached apohlife.c file, Which is a partially obfuscated version of the program I wrote with a lot of helpful annotations and comments for myself and posterity, revealing some of the magic under the hood. This program is also a somewhat improved version which uses ldexps in the draw routine and has bigger constants, so it can zoom up to level 1024 if memory allows, and it tries its best to avoid dumping core on the poor user when its memory runs out, rather it enters freeze mode where you can still travel in calculated frozen space-time. Well, its no nice and tame, it even has an escape key, usage message, and to top it all it even avoids gets!
### Special thanks.
To Tom Rockiki, the original co-writer of Golly, a personal friend and hashlife master, who reviewed some earlier versions of the entry and freely shared some of his vast knowledge regarding GOL programming and hashlife. As a free bonus, Tom has allowed me to show his code which is probably the most efficient yet most obfuscated way of calculating the GOL function on a 64 bits 8*8 leaf:
````c
@@ -129,11 +137,10 @@ unsigned long life8x8(long a) { unsigned long aw = a << 1, ae = a >> 1, s0 = aw
````
This uses only 19 bitwise operations and six shifts to calculate the inner 6x6 next generation bits of the input 8x8 !
--------------------------------------------------------------------------------
<!--
## Copyright:
(c) Copyright 1984-2019, [Leo Broukhis, Simon Cooper, Landon Curt Noll][judges] - All rights reserved
This work is licensed under a [Creative Commons Attribution-ShareAlike 3.0 Unported License][cc].
[judges]: http://www.ioccc.org/judges.html
[cc]: http://creativecommons.org/licenses/by-sa/3.0/
-->