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QSopt | ||
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LP Info | ||
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Software | ||
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Problem Formats | ||
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Callable Library | ||
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Rational Solver | ||
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> | Beta | |
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Contact Info | ||
We are working on QSopt Version 1.1. You are welcome to test the current experimental version (040712 or 050913) given below, if you would like to have access to the new library functions listed under Changes. Please let us know if you have find any errors or if you have some comments.
To download software, right click on the link (to save as a file).
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| Windows 98/ME/NT/2000/XP | |||
| QSopt.dll | | Dynamic link library |
| QSlib.lib | | Library interface file |
| qsopt.h | | C-source header file |
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| Windows/Cygwin | |||
| qsopt.a | | Function Library |
| qsopt.h | | C include file |
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| Red Hat Linux 8.0 (Intel 32-bit) | |||
| qsopt.a | | Function Library (050913) |
| qsopt.h | | C include file (050913) |
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| Red Hat Linux, gcc 3.4.3 (AMD 64-bit) | |||
| qsopt.a | | Function Library (070825) |
| qsopt.h | | C include file (070825) |
| qsopt | | Solver Executable (070825) |
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| Red Hat Linux, gcc 4.4.7, -fPIC (Intel 64-bit) | |||
| qsopt.PIC.a | | Function Library (070825) |
| qsopt.h | | C include file (070825) |
| qsopt | | Solver Executable (070825) |
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| CentOS Linux 6.6 (Intel 64-bit) | |||
| qsopt.a | | Function Library (070825) |
| qsopt.h | | C include file (070825) |
| qsopt | | Solver Executable (070825) |
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| Intel MacOS 10.5 | |||
| qsopt.a | | Function Library (050913) |
| qsopt.h | | C include file (050913) |
| qsopt | | Solver Executable (050913) |
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| Intel MacOS 10.6 (64-Bit) | |||
| qsopt.a | | Function Library (070825) |
| qsopt.h | | C include file (070825) |
| qsopt | | Solver Executable (070825) |
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| Changes (Sept. 13, 2005) | |||
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| Functions Added | |||
| QSget_basis_order | | Obtain the variable ordering in the current basis |
| QSget_binv_row | | Access a row of basis inverse |
| QSget_tableau_row | | Access a row of LP tableau |
| QSget_objsense | | Get the sense of the objective (max or min) |
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| Bug Fixes | |||
| MAX objective | | Signs of dual variables and reduced cost reversed (to match the natural signs for the LP dual problem) |
| Memory Use | | Altered scheme in basis factorization to save memory on instances having a large amount of fill-in (050612) |
| QSchange_sense | | The sense of the changed row is now set (050612) |
| QSload_basis | | Force a resolve when a new basis is loaded.(050913) |
| QSchange_coef | | Basis factorization reset after function call.(050913) |
| QSchange_sense | | Basis factorization reset after function call.(050913) |
| QSchange_bound | | Basis is adjusted if variable goes for free to bound or vice versa.(050913) |