ts@chyde.uwasa.fi (Timo Salmi LASK) (09/07/89)
Wed 6-Aug-89: Linear programming package again updated now to be
tslin27.arc. Available by anynymous ftp as usual. The tsdraw13.arc
companion LP two-dimension drawing package should also be of
interest for classroom usage.
...................................................................
Prof. Timo Salmi (Site 128.214.12.3)
School of Business Studies, University of Vaasa, SF-65101, Finland
Internet: ts@chyde.uwasa.fi Funet: vakk::salmi Bitnet: salmi@finfun
Description: This revision includes two major enhancements. The
capacity of the program has been increased from 55x80 constraints
and variables to 80x120. The second enhancement is the possibility
of input recall with line-editing.
A well-known bottle-neck of MsDos is the fact that the Intel 808x
processors limit array sizes to 64K. To use larger arrays special
techniques are needed. LINSOLVE version 2.7 employs the so-called
huge-arrays method. This means enhanced capacity, but also slightly
slower code. LINSOLVE still runs in the memory, and remains fast,
contrary to many other LP programs using sloo..oow disk access in
iterating.
The possibility of input recall with line-editing is introduced.
This means that in giving input from the keyboard, you have the
following extra input keys available: Home, End, CursorLeft,
CursorRight, CursorUp, Delete, and Esc. CursorUp is the recall key.
The others are self-explanatory. This option is particularly useful
in giving the linear programming task from the keyboard in classroom
usage. That is the primary reason why I added this feature into
linsolve.
The mps2equ.exe program, which can be used to convert
mps-formatted input into the "as is" linsolve format has also been
updated.
Searching Archive: TSLIN27.ARC - Linear programming by T.Salmi
Filename Comment Date Time CRC
-------- -------------------------------- ---- ---- ---
DEMO.MPS Mps-input-format demodata 09-06-89 21:00:46 064E
DEMOGOAL.DAT Linear goal programming demodata 08-01-89 14:59:26 36A3
DEMOLP.DAT Linear programming demodata 07-31-89 16:11:38 90E4
DEMOLP2.DAT Linear programming 2nd demodata 07-31-89 16:42:36 6A10
LINSOLVE.EXE Linear (and goal) programming 09-04-89 15:42:06 48C8
LINSOLVE.LIS Document 09-06-89 20:50:10 8695
MPS2EQU.EXE Mps input to equation format 09-06-89 20:22:48 9565
MPS2EQU.INF Document on MPS2EQU conversion 09-06-89 20:56:58 7ED4
TSPROG.INF List of PD programs from T.Salmi 08-30-89 15:44:34 3618
VAASA.INF Info: Finland, Vaasa, U of Vaasa 06-23-89 08:30:20 88AB
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