Added Row#get_stat, Row#get_prim and Row#get_dual

ChangeLog.md

@@ -1,3 +1,5 @@
+* Add Row#get_stat, Row#get_prim Row#get_dual
+
 # rglpk 0.2.4 2010-11-04
 
 * Add Rglpk#mip_status.

lib/rglpk.rb

@@ -211,7 +211,7 @@ def name=(n)
     def name
       Glpk_wrapper.glp_get_row_name(@p.lp, @i)
     end
-
+        
     def set_bounds(type, lb, ub)
       raise ArgumentError unless TypeConstants.include?(type)
       lb = 0.0 if lb.nil?
@@ -254,6 +254,19 @@ def get
       end
       row
     end
+
+    def get_stat
+      Glpk_wrapper.glp_get_row_stat(@p.lp,@i)
+    end
+
+    def get_prim
+      Glpk_wrapper.glp_get_row_prim(@p.lp,@i)
+    end
+
+    def get_dual
+      Glpk_wrapper.glp_get_row_dual(@p.lp,@i)
+    end
+
   end
 
   class Column

test/test_brief_example.rb

@@ -52,5 +52,8 @@ def test_example
 
     result = "z = %g; x1 = %g; x2 = %g; x3 = %g" % [z, x1, x2, x3]
     assert_equal "z = 733.333; x1 = 33.3333; x2 = 66.6667; x3 = 0", result
+    assert_equal Rglpk::GLP_NU, rows[0].get_stat
+    assert_equal 100, rows[0].get_prim
+    assert_equal 3.333333333333333, rows[0].get_dual
   end
 end