Fix compiler warnings.

Author: pelesh

src/LinearAlgebra/SparsityPattern/Variable.hpp

@@ -1,8 +1,7 @@
 /*!
     \file Variable.hpp
 */
-#ifndef SAD_VARIABLE_HPP
-#define SAD_VARIABLE_HPP
+#pragma once
 
 #include <map>
 #include <vector>
@@ -264,7 +263,7 @@ namespace Sparse
         bool isFixed_;           ///< Constant parameter flag.
 
         mutable DependencyMap* dependencies_;
-        static const size_t INVALID_VAR_NUMBER = -1;
+        static const size_t INVALID_VAR_NUMBER = static_cast<const size_t>(-1);
     };
 
     //------------------------------------
@@ -336,4 +335,3 @@ namespace Sparse
 #include "VariableImplementation.hpp"
 #include "VariableOperators.hpp"
 
-#endif // SAD_VARIABLE_HPP

src/LinearAlgebra/SparsityPattern/VariableImplementation.hpp

@@ -2,8 +2,7 @@
     \file VariableImplementation.hpp
 */
 
-#ifndef SAD_VARIABLE_IMPLEMENTATION_HPP
-#define SAD_VARIABLE_IMPLEMENTATION_HPP
+#pragma once
 
 namespace GridKit
 {
@@ -213,5 +212,3 @@ namespace Sparse
 } // namespace Sparse
 } // namespace GridKit
 
-
-#endif // SAD_VARIABLE_IMPLEMENTATION_HPP

src/LinearAlgebra/SparsityPattern/VariableOperators.hpp

@@ -2,8 +2,7 @@
     \file VariableOperators.hpp
     
 */
-#ifndef SAD_VARIABLE_OPERATORS_HPP
-#define SAD_VARIABLE_OPERATORS_HPP
+#pragma once
 
 // Define derivatives of standard library mathematical functions here.
 // These definitions could be used to add smoothing in cases where 
@@ -361,5 +360,3 @@ namespace std
 
 } // namespace std
 
-
-#endif // SAD_VARIABLE_OPERATORS_HPP

src/Utilities/Testing.hpp

@@ -99,6 +99,7 @@ inline bool isEqual(PowerSystemData::GenCostData<RealT, IdxT> a,
                     PowerSystemData::GenCostData<RealT, IdxT> b,
                     RealT tol = tol_)
 {
+  (void) tol; // suppress warning
   int fail = 0;
   fail += a.kind != b.kind;
   fail += a.startup != b.startup;
@@ -232,7 +233,7 @@ inline bool isEqual(std::vector<T> a, std::vector<T> b, double tol = tol_)
 
   int fail = 0;
   for (std::size_t i = 0; i < a.size(); i++) {
-    if (!isEqual(a[i], b[i])) {
+    if (!isEqual(a[i], b[i], tol)) {
       fail++;
       errs() << "[isEqual<vector<T>>]: Got failure with i=" << i << ".\n";
     }