diff -r 596e48d6e77b -r b4931ae52069 lemon/lp_glpk.cc
--- a/lemon/lp_glpk.cc	Mon Dec 04 18:09:09 2006 +0000
+++ b/lemon/lp_glpk.cc	Thu Dec 07 16:10:54 2006 +0000
@@ -213,10 +213,25 @@
     }
   }
 
-  LpGlpk::Value LpGlpk::_getCoeff(int, int)
+  LpGlpk::Value LpGlpk::_getCoeff(int row, int col)
   {
-    ///\todo This is not yet implemented!!!
+
+    int length=lpx_get_mat_row(lp, row, 0, 0);
+    
+    std::vector<int> indices(length + 2);
+    std::vector<Value> values(length + 2);
+    
+    lpx_get_mat_row(lp, row, &indices[0], &values[0]);
+    
+    //The following code does not suppose that the elements of the
+    //array indices are sorted
+    for (int i = 1; i <= length; ++i) {
+      if (indices[i]==col){
+	return values[i];
+      }
+    }
     return 0;
+
   }
 
 
@@ -262,6 +277,19 @@
     }
 
   }
+
+  LpGlpk::Value LpGlpk::_getColLowerBound(int i)
+  {
+    int b=lpx_get_col_type(lp, i);
+      switch (b) {
+      case LPX_LO:
+      case LPX_DB:
+      case LPX_FX:
+	return lpx_get_col_lb(lp, i);	
+      default: ;
+	return -INF;
+      }
+  }
   
   void LpGlpk::_setColUpperBound(int i, Value up)
   {
@@ -306,6 +334,19 @@
       }
     }
   }
+
+  LpGlpk::Value LpGlpk::_getColUpperBound(int i)
+  {
+    int b=lpx_get_col_type(lp, i);
+      switch (b) {
+      case LPX_UP:
+      case LPX_DB:
+      case LPX_FX:
+	return lpx_get_col_ub(lp, i);	
+      default: ;
+	return INF;
+      }
+  }
   
 //   void LpGlpk::_setRowLowerBound(int i, Value lo)
 //   {
@@ -424,6 +465,30 @@
     }
 
   }
+
+  void LpGlpk::_getRowBounds(int i, Value &lb, Value &ub)
+  {
+
+    int b=lpx_get_row_type(lp, i);
+    switch (b) {
+    case LPX_FR:
+    case LPX_UP:
+      lb = -INF;
+	break;
+    default: 
+      lb=lpx_get_row_lb(lp, i);
+    }
+
+    switch (b) {
+    case LPX_FR:
+    case LPX_LO:
+      ub = INF;
+	break;
+    default: 
+      ub=lpx_get_row_ub(lp, i);
+    }
+    
+  }
   
   void LpGlpk::_setObjCoeff(int i, Value obj_coef)
   {