Category : Science and Education
Archive   : MATLAB.ZIP
Filename : INSTALL.DOC

11/6/83







MATLAB Installation Guide
November, 1983


Cleve Moler
Department of Computer Science
University of New Mexico



The MATLAB tape is usually in one of two formats -- a UNIX
"tar" tape, or a "generic" tape with the following parameters:

9 track
1600 bits per inch
no label
80 characters per record
1600 characters per block
18 files in ASCII, followed by 18 files in EBCDIC

There are 36 files on the generic tape. The names of the
first 18, and their approximate sizes, are:

1. INSTALL 1100 lines
2. MAT 3900 lines
3. LIB 3339 lines
4. HELPER.66 75 lines
5. HELPER.77 120 lines
6. HELP 750 lines
7. SYS.UNIX 900 lines
8. SYS.VMS 260 lines
9. SYS.TSO 200 lines
10. SYS.CMS 350 lines
11. SYS.DEC10 250 lines
12. SYS.CDC 200 lines
13. SYS.PRIME 350 lines
14. DOC 3960 lines
15. DEMO 21 lines
16. DOC.NROFF 3250 lines
17. MAT.SNGL 3850 lines
18. LIB.SNGL 3339 lines

where a line is one 80 character record.

The first 18 files are in the ASCII character set. The
remaining 18 files are copies of the first 18 in EBCDIC.

INSTALL is this document. You can skip over it if you have
this hard copy.









MATLAB Installation, page 2



MAT, LIB, one of the versions of HELPER and one of the
versions of SYS together constitute the complete source code for
the double precision version of MATLAB.

The subroutines in MAT make up the parser and interpreter.
They include a COMMON statement which can be changed to change
the amount of memory allocated to variables.

The subroutines in LIB include modified versions of the
necessary routines from LINPACK, EISPACK and the BLAS. These do
not contain any COMMON statements and do not have to be changed
if the size of the stack is changed.

There are two versions of HELPER, the subroutine which
manages the help facility. The version in HELPER.66 is written
in Fortran 66 and uses sequential i/o. The version in HELPER.77
is written in Fortran 77 and uses character variables and direct
access i/o. If your system supports both versions, you will
probably want to choose the direct access one -- it should be
much faster. If you choose the direct access version, you will
have to run a preprocessor named HELPSET, which is also in file
HELPER.77.

HELP is the source text for the help facility. It is read
by the sequential version of HELPER, or preprocessed by HELPSET
into two files which are then read by the direct access version
of HELPER. HELP is also included as an appendix in the User's
Guide.

The subroutines in one of the versions of SYS may have to be
modified for your particular operating system. They involve file
access and floating point word format. I have included versions
that should work on several different operating systems. Pick
the version that is closest to your own system and make any
changes you need. There are no machine dependent constants.

DOC is a report entitled "MATLAB Users' Guide". It should
be printed on a nice printer with upper and lower case; there are
66 lines per page. Make as many copies as you need, or order
copies from us at New Mexico.

DEMO contains a demonstration exec file which can be
accessed by the exec command in MATLAB. On most systems, all that
is required is EXEC('DEMO') or EXEC('DEMO',7). On some systems,
like TSO and NOS, it will be necessary to attach file DEMO to
unit 2 and then EXEC(2) or EXEC(2,7).

DOC.NROFF is the input to the UNIX text processing system
that was used to produce DOC. This may be useful if you want to
print the users' guide in a different format.

MAT.SNGL and LIB.SNGL are the single precision versions of
MAT and LIB. It is suggested that these be used only on systems









MATLAB Installation, page 3



with long words (48 bit floating point fraction) or small
memories.

The first thing to worry about is the character set. The use
of an upper-lower case character set is highly desirable, but not
essential. Read the tape and look at the first 50 or so lines of
MAT. This is the subroutine MATLAB, a listing of which is
included in this document. Check the comments near the beginning
to see if the special characters are ok. The ones we have had
trouble with include:
SEMI ; BSLASH COLON : LESS < GREAT >
Any characters which are not ok should be changed in the comment
and in the data statement which follows. The alternate character
set includes the lower case letters as well as substitutes for
some of the special characters, such as and :, which are not on
some terminals. Do not worry too much about the alternate
character set now. These data statements in subroutine MATLAB
are the only place in the source code where the special
characters occur. (If you want to get fancy, there is a data
statement involving BEL in subroutine ERROR near the end of file
MAT. Change 1H-blank to 1H-control G to get your terminal to
ring its bell for any error.)

The files DOC and HELP are full of special characters,
including
< > \ ! : ;
If they are not ok, I hope it is not too difficult to fix them
up.

I have used several FORTRAN constructions which are only
semi-standard, and which may have to be changed for some systems:
Single quote (') in FORMATS instead of a tribute to Hollerith.
Entire arrays initialized in DATA statements.
Use of END= in READ statements.
I have not asked PFORT to tell me what else is non-standard.

Some interactive FORTRAN systems use column 1 for carriage
control and others don't. If your system does not, edit file MAT
and delete all "1X," . There are 131 occurrences.

The main program in file SYS simply calls MATLAB. It may
have to be modified to control the printing of underflow and
overflow messages. The ground rules are: Underflows are
possible, but are harmless if they are quietly set to zero.
Overflows are error conditions. It would be nice to print a
message and continue.

A listing of a typical version of SYS, using some Fortran 77
for clarity, is included in this document. I hope it is fairly
easy to see what the various subroutines do and how they have to
be revised for your system. Please send me copies of versions
appropriate for your system.










MATLAB Installation, page 4



The amount of memory required can be altered by a global
text edit on MAT which changes the matrix element stack length
from 5005 to something else. Be sure to get the statement
VSIZE = 5005
in the subroutine MATLAB. With this setting of the stack length,
MATLAB requires about a 300K byte region on an IBM system. The
length has to be reduced somewhat to get MATLAB to fit into a 64K
word region on a CDC system. Since each matrix element occupies
two double or single precision words, an increase of 1000 in the
stack length requires an additional 16K bytes or 2000 words.

It is possible to get by with less memory if you use
overlays. The simplest way to do this is the following.

ROOT

-------------------------------

S0 S1 S2 S3 S4 S5

Only ROOT plus one of the segments S0 through S5 need be in
memory at any one time. The segments do not call each other, but
return to the root. All the relevant calls are near the end of
subroutine MATLAB in the root. There are five labeled COMMON
blocks which are shared by the root and all the segments. The
various segments consist of:

ROOT:
MAIN MATLAB STACK1
PRINT PRNTID FUNS
STACKP ERROR FILES
HELPER PYTHAG FORMZ
FLOP PROMPT
Plus everything in file LIB not mentioned below.

S0:
PARSE COMAND CLAUSE
EXPR TERM FACTOR
STACKG STACK2 GETSYM
GETLIN GETCH GETVAL
EDIT XCHAR

S1:
MATFN1 WGECO WGEFA
WGESL WGEDI WPOFA
RREF HILBER

S2:
MATFN2 CORTH COMQR3
HTRIDI HTRIBK IMTQL2

S3:
MATFN3 WSVDC









MATLAB Installation, page 5



S4:
MATFN4 WQRDC WQRSL

S5:
MATFN5 MATFN6 MAGIC
SAVLOD RAT USER
PLOT

If you have enough room, combine ROOT and S0. With more room,
combine ROOT, S0 and S5. If you use some overlay structure,
please send me a description of how it is done on your system.

In case anybody needs to know, here are the changes
necessary to convert from double to single precision. They can
all be safely accomplished by simple global text changes in MAT,
LIB and an appropriate version of SYS.

DOUBLE PRECISION REAL
DOUBLE- REAL-
DSQRT SQRT
DLOG ALOG
DEXP EXP
DSIN SIN
DCOS COS
DATAN ATAN
DABS ABS
DMAX1 AMAX1
DMIN1 AMIN1
IDINT IFIX
DSIGN SIGN
DMOD AMOD
D0 E0
D1 E1
D2 E2
D9 E9


Here are some additional comments that apply to individual
systems.


VAX UNIX.

If you have read the "tar" format tape, see file README and
the makefile. Ignore the rest of this section.

It is essential to change the single backslash in the data
statement near the beginning of file MAT to a double backslash
. If this is not done, the F77 compiler produces an obscure
error message about "dataalpha" being too long.

Increase the size of the stack to take advantage of the
virtual memory. Eliminate all the "1X," in formats. Change the









MATLAB Installation, page 6



statement CASE = 0 in MATLAB to CASE = 1 to get lower case file
names. All these changes can be accomplished by applying the
following ed or vi commands to file MAT.

1,$s///g
1,$s/5005/50005/g
1,$s/1X,/0X,/g
1,$s/CASE = 0/CASE = 1/
1,$s/BEL/1H /BEL/1H^G/
1,$s/LCT(2) = 25/LCT(2) = 25000/

The compilation should suppress warnings about initializing
non-character variables with Hollerith and should use the
Berkeley version of the i/o support routines. This can be
accomplished with:

% f77 -w66 mat.f lib.f helper.f sys.f -lI77uc

Gary Klimowicz and Lee Ward of UNM have developed a overflow
fault handler for use with VAX UNIX. A copy of their C program
in included in SYS.UNIX and on the "tar" tape.



VAX VMS

SYS.VMS contains an extra subroutine for proper handling of
floating point overflow. The main program includes a call to the
system which initializes this handling.

Integer overflow is expected in the the print routine and in
random number generator. The integer overflow messages can be
turned off by

FORTRAN/NOCHECK MAT.FOR,LIB.FOR



IBM (TSO)
(Thanks to Jack Dongarra at Argonne.)

The main program in SYS.TSO includes the appropriate calls
to the IBM system utility ERRSET that turns off verbose underflow
and overflow messages.

Unfortunately, TSO does not have a mechanism for opening
files during execution. It is necessary to use file numbers with
SAVE, LOAD and EXEC.

We have to specify LRECL=80 for terminal input on unit 5 to
get blanks added to input lines. It is a good idea to set up a
clist something like the following.










MATLAB Installation, page 7



FREE FILE(FT05F001 FT06F001 FT09F001 FT01F001 FT02F001)
FREE ATTRLIST(AT80)
ATTR AT80 LRECL(80) BLKSIZE(80) RECFM(F)
ALLOC FILE(FT05F001) DA(*) USING(AT80)
ALLOC FILE(FT06F001) DA(*)
ALLOC FILE(FT09F001) DA('MATLAB.HELP.DATA')
ALLOC FILE(FT01F001) DA(SAVLOD.DATA)
ALLOC FILE(FT02F001) DA('MATLAB.DEMO.DATA')
CALL 'MATLAB.LOAD(MATMOD)'

With this arrangement, the DEMO file can be executed by exec(2).



IBM (CMS)
(Thanks to Jack Dongarra at Argonne and David Gay at MIT.)

Entering a blank line in response to the MATLAB prompt
generates an end-of-file from terminal input (Fortran unit
FT05F001). This results in a call from GETLIN to FILES with LUNIT
= -5. The terminal is "rewound" and control eventually returned
to PARSE which prints another prompt. I hope this works.

An assembly language routine used to attach files with names
generated by MATLAB to Fortran unit numbers is included in
SYS.CMS.



DEC-10
(Thanks to Stan Eisenstat and Craig Douglas at Yale.)

The hyperbolic trig functions SINH and COSH are not
available on the DEC system. Fortran subroutines are included in
the SYS.DEC10 file.



PRIME 400
(Thanks to Richard Franke and Drexel University.)

The terminal is Fortran I/O unit number 1. Subroutine
MATLAB has to be changed so that
RTE = 5 becomes RTE = 1
WTE = 6 becomes WTE = 1
Subroutine MATFN5 has to be changed so that
WIO = 1 becomes WIO = 8
LUNIT = 1 becomes LUNIT = 8 (in two places).



CDC










MATLAB Installation, page 8



CDC systems offer exciting challenges as far as portability
is concerned. The first question is: which character set should
be used? An easy approach is to convert everything to the
venerable 6-bit character set. Even so, you may have trouble
with the colon, which is a pretty important MATLAB character. It
is far more fun to try to use upper and lower case and all the
special symbols. I have succeeded in doing this with the 6/12-
bit setup used on the NOS system at Sandia, but have given up
with the 6/18-bit coding on LTSS at Los Alamos.

In "ASCII" mode on NOS, lower case characters are
represented by 12 bits -- the first 6 bits are octal 76 and the
last 6 are the corresponding upper case character. They count as
two characters. So, the following changes are required in file
MAT. Several of the mixed case strings in FORMAT statements
extend beyond column 72. You might as well convert these to all
upper case. All the 80A1's in FORMATS should be changed to
132A1's and all the DATA statements initializing LRECL should be
changed from 80 to 132. The DATA statement for ALPHB in
subroutine MATLAB can be changed to have all upper case
alphabetic characters because subroutine XCHAR will catch the
prefix octal 76.

An important change involves our friend the colon, which
becomes a 12-bit octal 7404. In the DATA statement for ALPHA,
make the element just before 1H+ into a 1H(percent sign). And,
in the DATA statement for ALPHB, make the corresponding element
into a 2H(colon). Then read the comments in subroutine XCHAR in
file SYS.CDC and make sure that the DATA statements there are
correct.

The FTN5 compiler should take MATLAB pretty much is it is.
The older FTN compiler requires two familiar changes to the
entire source code. First, the END= in the READ statements have
to be replaced by IF (EOF) GO TO ... . Second, the single quotes
in FORMATS have to be replaced with asterisks.



Good luck. Please let me know what difficulties you have, and
what I have left out of this guide. You can call me at:
505-268-8631 (home)
505-277-3112 (office)

------------

The support of the National Science Foundation and the use
of facilities at Argonne National Laboratory, Los Alamos National
Laboratory and Stanford Linear Accelerator Center is gratefully
acknowledged. So is the assistance of the many people who have
installed early versions of MATLAB.











MATLAB Installation, page 9



Contents of file MAT:

SUBROUTINE MATLAB(INIT)
SUBROUTINE PARSE
SUBROUTINE COMAND(ID)
SUBROUTINE CLAUSE
SUBROUTINE EXPR
SUBROUTINE TERM
SUBROUTINE FACTOR
SUBROUTINE FUNS(ID)
SUBROUTINE STACKP(ID)
SUBROUTINE STACKG(ID)
SUBROUTINE STACK1(OP)
SUBROUTINE STACK2(OP)
SUBROUTINE PRINT(ID,K)
SUBROUTINE PRNTID(ID,ARGCNT)
SUBROUTINE GETSYM
SUBROUTINE GETLIN
SUBROUTINE GETCH
SUBROUTINE GETVAL(S)
SUBROUTINE MATFN1
SUBROUTINE MATFN2
SUBROUTINE MATFN3
SUBROUTINE MATFN4
SUBROUTINE MATFN5
SUBROUTINE MATFN6
SUBROUTINE ERROR(N)
DOUBLE PRECISION FUNCTION PYTHAG(A,B)
SUBROUTINE RAT(X,LEN,MAXD,D)

Contents of file HELPER.66:

SUBROUTINE HELPER(H) -- Sequential version

Contents of file HELPER.77:

PROGRAM HLPSET -- Direct access setup
SUBROUTINE HELPER(H) -- Direct access version

Contents of file SYS:

PROGRAM MAIN
SUBROUTINE FILES(LUNIT,NAME)
SUBROUTINE SAVLOD(LUNIT,ID,M,N,IMG,JOB,XREAL,XIMAG)
SUBROUTINE FORMZ(LUNIT,X,Y)
DOUBLE PRECISION FUNCTION FLOP(X)
SUBROUTINE XCHAR(BUF,K)
SUBROUTINE USER(A,M,N,S,T)
SUBROUTINE PROMPT(PAUSE)
SUBROUTINE PLOT(LUNIT,X,Y,N,P,K,BUF)
SUBROUTINE EDIT(BUF,N)











MATLAB Installation, page 10



Contents of file LIB:

SUBROUTINE WGECO(AR,AI,LDA,N,IPVT,RCOND,ZR,ZI)
SUBROUTINE WGEFA(AR,AI,LDA,N,IPVT,INFO)
SUBROUTINE WGESL(AR,AI,LDA,N,IPVT,BR,BI,JOB)
SUBROUTINE WGEDI(AR,AI,LDA,N,IPVT,DETR,DETI,WORKR,WORKI,JOB)
SUBROUTINE WPOFA(AR,AI,LDA,N,INFO)
SUBROUTINE RREF(AR,AI,LDA,M,N,EPS)
SUBROUTINE HILBER(A,LDA,N)
SUBROUTINE HTRIDI(NM,N,AR,AI,D,E,E2,TAU)
SUBROUTINE HTRIBK(NM,N,AR,AI,TAU,M,ZR,ZI)
SUBROUTINE IMTQL2(NM,N,D,E,Z,IERR,JOB)
SUBROUTINE CORTH(NM,N,LOW,IGH,AR,AI,ORTR,ORTI)
SUBROUTINE COMQR3(NM,N,LOW,IGH,ORTR,ORTI,HR,HI,WR,WI,ZR,ZI,IERR

SUBROUTINE WSVDC(XR,XI,LDX,N,P,SR,SI,ER,EI,UR,UI,LDU,VR,VI,LDV,
SUBROUTINE WQRDC(XR,XI,LDX,N,P,QRAUXR,QRAUXI,JPVT,WORKR,WORKI,
SUBROUTINE WQRSL(XR,XI,LDX,N,K,QRAUXR,QRAUXI,YR,YI,QYR,QYI,QTYR,
SUBROUTINE MAGIC(A,LDA,N)
SUBROUTINE BASE(X,B,EPS,S,N)
DOUBLE PRECISION FUNCTION URAND(IY)
SUBROUTINE WMUL(AR,AI,BR,BI,CR,CI)
SUBROUTINE WDIV(AR,AI,BR,BI,CR,CI)
SUBROUTINE WSIGN(XR,XI,YR,YI,ZR,ZI)
SUBROUTINE WSQRT(XR,XI,YR,YI)
SUBROUTINE WLOG(XR,XI,YR,YI)
SUBROUTINE WATAN(XR,XI,YR,YI)
DOUBLE PRECISION FUNCTION WNRM2(N,XR,XI,INCX)
DOUBLE PRECISION FUNCTION WASUM(N,XR,XI,INCX)
INTEGER FUNCTION IWAMAX(N,XR,XI,INCX)
SUBROUTINE WRSCAL(N,S,XR,XI,INCX)
SUBROUTINE WSCAL(N,SR,SI,XR,XI,INCX)
SUBROUTINE WAXPY(N,SR,SI,XR,XI,INCX,YR,YI,INCY)
DOUBLE PRECISION FUNCTION WDOTUR(N,XR,XI,INCX,YR,YI,INCY)
DOUBLE PRECISION FUNCTION WDOTUI(N,XR,XI,INCX,YR,YI,INCY)
DOUBLE PRECISION FUNCTION WDOTCR(N,XR,XI,INCX,YR,YI,INCY)
DOUBLE PRECISION FUNCTION WDOTCI(N,XR,XI,INCX,YR,YI,INCY)
SUBROUTINE WCOPY(N,XR,XI,INCX,YR,YI,INCY)
SUBROUTINE WSET(N,XR,XI,YR,YI,INCY)
SUBROUTINE WSWAP(N,XR,XI,INCX,YR,YI,INCY)
SUBROUTINE RSET(N,DX,DY,INCY)
SUBROUTINE RSWAP(N,X,INCX,Y,INCY)
SUBROUTINE RROT(N,DX,INCX,DY,INCY,C,S)
SUBROUTINE RROTG(DA,DB,C,S)
LOGICAL FUNCTION EQID(X,Y)
SUBROUTINE PUTID(X,Y)
DOUBLE PRECISION FUNCTION ROUND(X)
















MATLAB Installation, page 11



First subroutine in file MAT:

SUBROUTINE MATLAB(INIT)
C INIT = 0 FOR ORDINARY FIRST ENTRY
C = POSITIVE FOR SUBSEQUENT ENTRIES
C = NEGATIVE FOR SILENT INITIALIZATION (SEE MATZ)
C
DOUBLE PRECISION STKR(5005),STKI(5005)
INTEGER IDSTK(4,48),LSTK(48),MSTK(48),NSTK(48),VSIZE,LSIZE,BOT,TOP
INTEGER ALFA(52),ALFB(52),ALFL,CASE
INTEGER IDS(4,32),PSTK(32),RSTK(32),PSIZE,PT,PTZ
INTEGER DDT,ERR,FMT,LCT(4),LIN(1024),LPT(6),RIO,WIO,RTE,WTE,HIO
INTEGER SYM,SYN(4),BUF(256),CHAR,FLP(2),FIN,FUN,LHS,RHS,RAN(2)
COMMON /VSTK/ STKR,STKI,IDSTK,LSTK,MSTK,NSTK,VSIZE,LSIZE,BOT,TOP
COMMON /ALFS/ ALFA,ALFB,ALFL,CASE
COMMON /RECU/ IDS,PSTK,RSTK,PSIZE,PT,PTZ
COMMON /IOP/ DDT,ERR,FMT,LCT,LIN,LPT,RIO,WIO,RTE,WTE,HIO
COMMON /COM/ SYM,SYN,BUF,CHAR,FLP,FIN,FUN,LHS,RHS,RAN
C
DOUBLE PRECISION S,T
INTEGER EPS(4),FLOPS(4),EYE(4),RAND(4)
C
C CHARACTER SET
C 0 10 20 30 40 50
C
C 0 0 A K U COLON : LESS <
C 1 1 B L V PLUS + GREAT >
C 2 2 C M W MINUS -
C 3 3 D N X STAR *
C 4 4 E O Y SLASH /
C 5 5 F P Z BSLASH
C 6 6 G Q BLANK EQUAL =
C 7 7 H R LPAREN ( DOT .
C 8 8 I S RPAREN ) COMMA ,
C 9 9 J T SEMI ; QUOTE '
C
INTEGER ALPHA(52),ALPHB(52)
DATA ALPHA /1H0,1H1,1H2,1H3,1H4,1H5,1H6,1H7,1H8,1H9,
$ 1HA,1HB,1HC,1HD,1HE,1HF,1HG,1HH,1HI,1HJ,
$ 1HK,1HL,1HM,1HN,1HO,1HP,1HQ,1HR,1HS,1HT,
$ 1HU,1HV,1HW,1HX,1HY,1HZ,1H ,1H(,1H),1H;,
$ 1H:,1H+,1H-,1H*,1H/,1H,1H=,1H.,1H,,1H',
$ 1H<,1H>/
C
C ALTERNATE CHARACTER SET
C
DATA ALPHB /1H0,1H1,1H2,1H3,1H4,1H5,1H6,1H7,1H8,1H9,
$ 1Ha,1Hb,1Hc,1Hd,1He,1Hf,1Hg,1Hh,1Hi,1Hj,
$ 1Hk,1Hl,1Hm,1Hn,1Ho,1Hp,1Hq,1Hr,1Hs,1Ht,
$ 1Hu,1Hv,1Hw,1Hx,1Hy,1Hz,1H ,1H(,1H),1H;,
$ 1H,1H+,1H-,1H*,1H/,1H$,1H=,1H.,1H,,1H",
$ 1H\,1H!/
C









MATLAB Installation, page 12



DATA EPS/14,25,28,36/,FLOPS/15,21,24,25/
DATA EYE/14,34,14,36/,RAND/27,10,23,13/
C
IF (INIT .GT. 0) GO TO 90
C
C RTE = UNIT NUMBER FOR TERMINAL INPUT
C WTE = UNIT NUMBER FOR TERMINAL OUTPUT
C HIO = UNIT NUMBER FOR HELP FILE
RTE = 5
WTE = 6
HIO = 9
C
IF (INIT .GE. 0) WRITE(WTE,100)
100 FORMAT(//1X,' < M A T L A B >'
$ /1X,' Version of --/--/--')
C
C ASK HELPER TO OPEN HELP FILE
BUF(1) = 0
CALL HELPER(BUF)
C
C RANDOM NUMBER SEED
RAN(1) = 0
C
C INITIAL LINE LIMIT
LCT(2) = 25
C
ALFL = 52
CASE = 1
C CASE = 1 for file names in lower case
DO 20 I = 1, ALFL
ALFA(I) = ALPHA(I)
ALFB(I) = ALPHB(I)
20 CONTINUE
C
VSIZE = 50005
LSIZE = 48
PSIZE = 32
BOT = LSIZE-3
CALL WSET(5,0.0D0,0.0D0,STKR(VSIZE-4),STKI(VSIZE-4),1)
CALL PUTID(IDSTK(1,LSIZE-3),EPS)
LSTK(LSIZE-3) = VSIZE-4
MSTK(LSIZE-3) = 1
NSTK(LSIZE-3) = 1
S = 1.0D0
30 S = S/2.0D0
T = 1.0D0 + S
IF (T .GT. 1.0D0) GO TO 30
STKR(VSIZE-4) = 2.0D0*S
CALL PUTID(IDSTK(1,LSIZE-2),FLOPS)
LSTK(LSIZE-2) = VSIZE-3
MSTK(LSIZE-2) = 1
NSTK(LSIZE-2) = 2
CALL PUTID(IDSTK(1,LSIZE-1), EYE)









MATLAB Installation, page 13



LSTK(LSIZE-1) = VSIZE-1
MSTK(LSIZE-1) = -1
NSTK(LSIZE-1) = -1
STKR(VSIZE-1) = 1.0D0
CALL PUTID(IDSTK(1,LSIZE), RAND)
LSTK(LSIZE) = VSIZE
MSTK(LSIZE) = 1
NSTK(LSIZE) = 1
FMT = 1
FLP(1) = 0
FLP(2) = 0
DDT = 0
RAN(2) = 0
PTZ = 0
PT = PTZ
ERR = 0
RIO = RTE
WIO = 0
IF (INIT .LT. 0) RETURN
C
90 CALL PARSE
IF (FUN .EQ. 1) CALL MATFN1
IF (FUN .EQ. 2) CALL MATFN2
IF (FUN .EQ. 3) CALL MATFN3
IF (FUN .EQ. 4) CALL MATFN4
IF (FUN .EQ. 5) CALL MATFN5
IF (FUN .EQ. 6) CALL MATFN6
IF (FUN .EQ. 21) CALL MATFN1
IF (FUN .NE. 99) GO TO 90
RETURN
END































MATLAB Installation, page 14



Typical file SYS (Nonstandard stuff in lower case):

C PROGRAM MAIN
call overflow-control
CALL MATLAB(0)
STOP
END


SUBROUTINE FILES(LUNIT,NAME)
INTEGER LUNIT,NAME(32)
C
C SYSTEM DEPENDENT ROUTINE TO ALLOCATE FILES
C LUNIT = LOGICAL UNIT NUMBER
C NAME = FILE NAME, 1 CHARACTER PER WORD
C
character*32 nam
c
c close exec, save, load and print files
if (lunit .lt. 0) then
close(unit=-lunit)
return
end if
c
c Fortran 77 internal file conversion from 32a1 to character*32
write(nam,'(32a1)') name
c
c formatted i/o for exec and print
if (lunit .gt. 2) open(unit=lunit,file=nam)
c
c unformatted i/o for save and load
if (lunit .le. 2) open(unit=lunit,file=nam,form='unformatted')
c
c rewind all except diary
if (lunit .ne. 8) rewind lunit
c
RETURN
END


SUBROUTINE SAVLOD(LUNIT,ID,M,N,IMG,JOB,XREAL,XIMAG)
INTEGER LUNIT,ID(4),M,N,IMG,JOB
DOUBLE PRECISION XREAL(1),XIMAG(1)
C
C IMPLEMENT SAVE AND LOAD
C LUNIT = LOGICAL UNIT NUMBER
C ID = NAME, FORMAT 4A1
C M, N = DIMENSIONS
C IMG = NONZERO IF XIMAG IS NONZERO
C JOB = 0 FOR SAVE
C = SPACE AVAILABLE FOR LOAD
C XREAL, XIMAG = REAL AND OPTIONAL IMAGINARY PARTS
C









MATLAB Installation, page 15



C THIS VERSION USES UNFORMATTED READ AND WRITE
C
IF (JOB .GT. 0) GO TO 20
C
C SAVE
10 WRITE(LUNIT) ID,M,N,IMG
DO 15 J = 1, N
K = (J-1)*M+1
L = J*M
WRITE(LUNIT) (XREAL(I),I=K,L)
IF (IMG .NE. 0) WRITE(LUNIT) (XIMAG(I),I=K,L)
15 CONTINUE
RETURN
C
C LOAD
20 READ(LUNIT,END=30) ID,M,N,IMG
IF (M*N .GT. JOB) GO TO 30
DO 25 J = 1, N
K = (J-1)*M+1
L = J*M
READ(LUNIT,END=30) (XREAL(I),I=K,L)
IF (IMG .NE. 0) READ(LUNIT,END=30) (XIMAG(I),I=K,L)
25 CONTINUE
RETURN
C
C END OF FILE
30 M = 0
N = 0
RETURN
END


SUBROUTINE FORMZ(LUNIT,X,Y)
DOUBLE PRECISION X,Y
C
C SYSTEM DEPENDENT ROUTINE TO PRINT WITH Z FORMAT
C
IF (Y .NE. 0.0D0) WRITE(LUNIT,10) X,Y
IF (Y .EQ. 0.0D0) WRITE(LUNIT,10) X
10 format(2z18)
RETURN
END


DOUBLE PRECISION FUNCTION FLOP(X)
DOUBLE PRECISION X
C SYSTEM DEPENDENT FUNCTION
C COUNT AND POSSIBLY CHOP EACH FLOATING POINT OPERATION
C FLP(1) IS FLOP COUNTER
C FLP(2) IS NUMBER OF PLACES TO BE CHOPPED
C
INTEGER SYM,SYN(4),BUF(256),CHAR,FLP(2),FIN,FUN,LHS,RHS,RAN(2)
COMMON /COM/ SYM,SYN,BUF,CHAR,FLP,FIN,FUN,LHS,RHS,RAN









MATLAB Installation, page 16



C
double precision mask(14),xx,mm
real mas(2,14)
logical lx(2),lm(2)
equivalence (lx(1),xx),(lm(1),mm)
equivalence (mask(1),mas(1))
data mas/
$ z'ffffffff',z'fff0ffff',
$ z'ffffffff',z'ff00ffff',
$ z'ffffffff',z'f000ffff',
$ z'ffffffff',z'0000ffff',
$ z'ffffffff',z'0000fff0',
$ z'ffffffff',z'0000ff00',
$ z'ffffffff',z'0000f000',
$ z'ffffffff',z'00000000',
$ z'fff0ffff',z'00000000',
$ z'ff00ffff',z'00000000',
$ z'f000ffff',z'00000000',
$ z'0000ffff',z'00000000',
$ z'0000fff0',z'00000000',
$ z'0000ff80',z'00000000'/
C
FLP(1) = FLP(1) + 1
K = FLP(2)
FLOP = X
IF (K .LE. 0) RETURN
FLOP = 0.0D0
IF (K .GE. 15) RETURN
XX = X
MM = MASK(K)
LX(1) = and(LX(1),LM(1))
LX(2) = and(LX(2),LM(2))
FLOP = XX
RETURN
END


SUBROUTINE XCHAR(BUF,K)
INTEGER BUF(1),K
C
C SYSTEM DEPENDENT ROUTINE TO HANDLE SPECIAL CHARACTERS
C
INTEGER DDT,ERR,FMT,LCT(4),LIN(1024),LPT(6),RIO,WIO,RTE,WTE
COMMON /IOP/ DDT,ERR,FMT,LCT,LIN,LPT,RIO,WIO,RTE,WTE
write(WTE,10) buf(1)
10 format(A1,' is not a MATLAB character.')
RETURN
END


SUBROUTINE USER(A,M,N,S,T)
DOUBLE PRECISION A(M,N),S,T
C









MATLAB Installation, page 17



INTEGER A3(9)
DATA A3 /-149,537,-27,-50,180,-9,-154,546,-25/
IF (A(1,1) .NE. 3.0D0) RETURN
DO 10 I = 1, 9
A(I,1) = A3(I)
10 CONTINUE
M = 3
N = 3
RETURN
END


SUBROUTINE PROMPT(PAUSE)
INTEGER PAUSE
C
C ISSUE MATLAB PROMPT WITH OPTIONAL PAUSE
C
INTEGER DDT,ERR,FMT,LCT(4),LIN(1024),LPT(6),RIO,WIO,RTE,WTE
COMMON /IOP/ DDT,ERR,FMT,LCT,LIN,LPT,RIO,WIO,RTE,WTE
WRITE(WTE,10)
IF (WIO .NE. 0) WRITE(WIO,10)
10 FORMAT(1X,/'<>')
IF (PAUSE .EQ. 1) READ(RTE,20) DUMMY
20 FORMAT(A1)
RETURN
END


SUBROUTINE PLOT(LUNIT,X,Y,N,P,K,BUF)
DOUBLE PRECISION X(N),Y(N),P(1)
INTEGER BUF(79)
C
C PLOT X VS. Y ON LUNIT
C IF K IS NONZERO, THEN P(1),...,P(K) ARE EXTRA PARAMETERS
C BUF IS WORK SPACE
C
DOUBLE PRECISION XMIN,YMIN,XMAX,YMAX,DY,DX,Y1,Y0
INTEGER AST,BLANK,H,W
DATA AST/1H*/,BLANK/1H /,H/20/,W/79/
C
C H = HEIGHT, W = WIDTH
C
XMIN = X(1)
XMAX = X(1)
YMIN = Y(1)
YMAX = Y(1)
DO 10 I = 1, N
XMIN = DMIN1(XMIN,X(I))
XMAX = DMAX1(XMAX,X(I))
YMIN = DMIN1(YMIN,Y(I))
YMAX = DMAX1(YMAX,Y(I))
10 CONTINUE
DX = XMAX - XMIN









MATLAB Installation, page 18



IF (DX .EQ. 0.0D0) DX = 1.0D0
DY = YMAX - YMIN
WRITE(LUNIT,35)
DO 40 L = 1, H
DO 20 J = 1, W
BUF(J) = BLANK
20 CONTINUE
Y1 = YMIN + (H-L+1)*DY/H
Y0 = YMIN + (H-L)*DY/H
JMAX = 1
DO 30 I = 1, N
IF (Y(I) .GT. Y1) GO TO 30
IF (L.NE.H .AND. Y(I).LE.Y0) GO TO 30
J = 1 + (W-1)*(X(I) - XMIN)/DX
BUF(J) = AST
JMAX = MAX0(JMAX,J)
30 CONTINUE
WRITE(LUNIT,35) (BUF(J),J=1,JMAX)
35 FORMAT(1X,79A1)
40 CONTINUE
RETURN
END


SUBROUTINE EDIT(BUF,N)
INTEGER BUF(N)
C
C CALLED AFTER INPUT OF A SINGLE BACKSLASH
C BUF CONTAINS PREVIOUS INPUT LINE, ONE CHAR PER WORD
C ENTER LOCAL EDITOR IF POSSIBLE
C
character*256 s
open(7,file='----')
write(7,10) (buf(i),i=1,n)
10 format(256a1)
close(7)
call system('edit ----')
open(7,file='----')
rewind 7
read(7,'(a)') s
close(7)
call system('remove ----')
n = 0
do 20 i = 1, 256
if (s(i:i) .ne. ' ') n = i
20 continue
read(s,10) (buf(i),i=1,n)
RETURN
END