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authorHarpreet2016-09-03 00:36:51 +0530
committerHarpreet2016-09-03 00:36:51 +0530
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-/* $Id: CoinPresolvePsdebug.hpp 1560 2012-11-24 00:29:01Z lou $ */
-// Copyright (C) 2002, International Business Machines
-// Corporation and others. All Rights Reserved.
-// This code is licensed under the terms of the Eclipse Public License (EPL).
-
-#ifndef CoinPresolvePsdebug_H
-#define CoinPresolvePsdebug_H
-
-/*
- The current idea of the relation between PRESOLVE_DEBUG and
- PRESOLVE_CONSISTENCY is that PRESOLVE_CONSISTENCY triggers the consistency
- checks and PRESOLVE_DEBUG triggers consistency checks and output.
- This isn't always true in the code, but that's the goal. Really,
- the whole compile-time scheme should be replaced with something more
- user-friendly (control variables that can be changed during the run).
-
- Also floating about are PRESOLVE_SUMMARY and COIN_PRESOLVE_TUNING.
- -- lh, 111208 --
-*/
-/*! \defgroup PresolveDebugFunctions Presolve Debug Functions
-
- These functions implement consistency checks on data structures involved
- in presolve and postsolve and on the components of the lp solution.
-
- To use these functions, include CoinPresolvePsdebug.hpp in your file and
- define the compile-time constants PRESOLVE_SUMMARY, PRESOLVE_DEBUG, and
- PRESOLVE_CONSISTENCY. A value is needed (<i>i.e.</i>, PRESOLVE_DEBUG=1).
- In a few places, higher values will get you a bit more output.
-
- ********
-
- Define the symbols PRESOLVE_DEBUG and PRESOLVE_CONSISTENCY on the configure
- command line (use ADD_CXXFLAGS), in a Makefile, or similar and do a full
- rebuild (including any presolve driver code). If the symbols are not
- consistently nonzero across *all* presolve code, you'll get something
- between garbage and a core dump! Debugging adds messages to CoinMessage
- and allocates and maintains arrays that hold debug information.
-
- That said, given that you've configured and built with PRESOLVE_DEBUG and
- PRESOLVE_CONSISTENCY nonzero everywhere, it's safe to adjust PRESOLVE_DEBUG
- to values in the range 1..n in individual files to increase or decrease the
- amount of output.
-
- The suggested approach for PRESOLVE_DEBUG is to define it to 1 in the build
- and then increase it in individual presolve code files to get more detail.
-
- ********
-*/
-//@{
-
-/*! \relates CoinPresolveMatrix
- \brief Check column-major and/or row-major matrices for duplicate
- entries in the major vectors.
-
- By default, scans both the column- and row-major matrices. Set doCol (doRow)
- to false to suppress the column (row) scan.
-*/
-void presolve_no_dups(const CoinPresolveMatrix *preObj,
- bool doCol = true, bool doRow = true) ;
-
-/*! \relates CoinPresolveMatrix
- \brief Check the links which track storage order for major vectors in
- the bulk storage area.
-
- By default, scans both the column- and row-major matrix. Set doCol = false to
- suppress the column-major scan. Set doRow = false to suppres the row-major
- scan.
-*/
-void presolve_links_ok(const CoinPresolveMatrix *preObj,
- bool doCol = true, bool doRow = true) ;
-
-/*! \relates CoinPresolveMatrix
- \brief Check for explicit zeros in the column- and/or row-major matrices.
-
- By default, scans both the column- and row-major matrices. Set doCol (doRow)
- to false to suppress the column (row) scan.
-*/
-void presolve_no_zeros(const CoinPresolveMatrix *preObj,
- bool doCol = true, bool doRow = true) ;
-
-/*! \relates CoinPresolveMatrix
- \brief Checks for equivalence of the column- and row-major matrices.
-
- Normally the routine will test for coefficient presence and value. Set
- \p chkvals to false to suppress the check for equal value.
-*/
-void presolve_consistent(const CoinPresolveMatrix *preObj,
- bool chkvals = true) ;
-
-/*! \relates CoinPostsolveMatrix
- \brief Checks that column threads agree with column lengths
-*/
-void presolve_check_threads(const CoinPostsolveMatrix *obj) ;
-
-/*! \relates CoinPostsolveMatrix
- \brief Checks the free list
-
- Scans the thread of free locations in the bulk store and checks that all
- entries are reasonable (0 <= index < bulk0_). If chkElemCnt is true, it
- also checks that the total number of entries in the matrix plus the
- locations on the free list total to the size of the bulk store. Postsolve
- routines do not maintain an accurate element count, but this is useful
- for checking a newly constructed postsolve matrix.
-*/
-void presolve_check_free_list(const CoinPostsolveMatrix *obj,
- bool chkElemCnt = false) ;
-
-/*! \relates CoinPostsolveMatrix
- \brief Check stored reduced costs for accuracy and consistency with
- variable status.
-
- The routine will check the value of the reduced costs for architectural
- variables (CoinPrePostsolveMatrix::rcosts_). It performs an accuracy check
- by recalculating the reduced cost from scratch. It will also check the
- value for consistency with the status information in
- CoinPrePostsolveMatrix::colstat_.
-*/
-void presolve_check_reduced_costs(const CoinPostsolveMatrix *obj) ;
-
-/*! \relates CoinPostsolveMatrix
- \brief Check the dual variables for consistency with row activity.
-
- The routine checks that the value of the dual variable is consistent
- with the state of the constraint (loose, tight at lower bound, or tight at
- upper bound).
-*/
-void presolve_check_duals(const CoinPostsolveMatrix *postObj) ;
-
-/*! \relates CoinPresolveMatrix
- \brief Check primal solution and architectural variable status.
-
- The architectural variables can be checked for bogus values, feasibility,
- and valid status. The row activity is checked for bogus values, accuracy,
- and feasibility. By default, row activity is not checked (presolve is
- sloppy about maintaining it). See the definitions in
- CoinPresolvePsdebug.cpp for more information.
-*/
-void presolve_check_sol(const CoinPresolveMatrix *preObj,
- int chkColSol = 2, int chkRowAct = 1,
- int chkStatus = 1) ;
-
-/*! \relates CoinPostsolveMatrix
- \brief Check primal solution and architectural variable status.
-
- The architectural variables can be checked for bogus values, feasibility,
- and valid status. The row activity is checked for bogus values, accuracy,
- and feasibility. See the definitions in CoinPresolvePsdebug.cpp for more
- information.
-*/
-void presolve_check_sol(const CoinPostsolveMatrix *postObj,
- int chkColSol = 2, int chkRowAct = 2,
- int chkStatus = 1) ;
-
-/*! \relates CoinPresolveMatrix
- \brief Check for the proper number of basic variables.
-*/
-void presolve_check_nbasic(const CoinPresolveMatrix *preObj) ;
-
-/*! \relates CoinPostsolveMatrix
- \brief Check for the proper number of basic variables.
-*/
-void presolve_check_nbasic(const CoinPostsolveMatrix *postObj) ;
-
-//@}
-
-#endif