Changeset 2328:b4931ae52069 in lemon-0.x for lemon/lp_skeleton.h

Timestamp:

12/07/06 17:10:54 (17 years ago)

Author:

athos

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@3104

Message:

Query functions have been implemented for GLPK (CPLEX breaks at the moment, I guess): These functions include:
retrieving one element of the coeff. matrix
retrieving one element of the obj function
lower bd for a variable
upper bound for a variable
lower and upper bounds for a row (these can not be handled separately at the moment)
direction of the optimization (is_max() function)

File:

• lemon/lp_skeleton.h (modified) (3 diffs)

lemon/lp_skeleton.h

@@ -65 +65 @@
     /// \e
 
+    /// The lower bound of a variable (column) is an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or -\ref INF.
+    virtual Value _getColLowerBound(int i);
+
     /// The upper bound of a variable (column) have to be given by an 
     /// extended number of type Value, i.e. a finite number of type 
@@ -70 +75 @@
     virtual void _setColUpperBound(int i, Value value);
     /// \e
+
+    /// The upper bound of a variable (column) is an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or \ref INF.
+    virtual Value _getColUpperBound(int i);
 
 //     /// The lower bound of a linear expression (row) have to be given by an 
@@ -87 +97 @@
     /// Value or +/-\ref INF.
     virtual void _setRowBounds(int i, Value lb, Value ub);
+    /// \e
+
+
+    /// The lower and the upper bound of
+    /// a constraint (row) are  
+    /// extended numbers of type Value, i.e.  finite numbers of type 
+    /// Value, -\ref INF or \ref INF. 
+    virtual void _getRowBounds(int i, Value &lb, Value &ub);
     /// \e