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 ---- ------ ------ ----- 0010 140290 89445 37%