make some constructors explicit

Apps/Common/SIMSolver.h

@@ -122,7 +122,7 @@ template<class T1> class SIMSolver : public SIMSolverStat<T1>
 {
 public:
   //! \brief The constructor initializes the reference to the actual solver.
-  SIMSolver(T1& s1) : SIMSolverStat<T1>(s1,"Time integration driver")
+  explicit SIMSolver(T1& s1) : SIMSolverStat<T1>(s1,"Time integration driver")
   {
     saveDivergedSol = false;
   }

Apps/Common/SIMSolverAdap.h

@@ -28,7 +28,7 @@ template<class T1> class SIMSolverAdap : public SIMSolverStat<T1>
 {
 public:
   //! \brief The constructor forwards to the parent class constructor.
-  SIMSolverAdap(T1& s1) : SIMSolverStat<T1>(s1), aSim(s1,false)
+  explicit SIMSolverAdap(T1& s1) : SIMSolverStat<T1>(s1), aSim(s1,false)
   {
     this->S1.setSol(&aSim.getSolution());
   }

src/ASM/ElmMats.h

@@ -34,7 +34,7 @@ class ElmMats : public LocalIntegral
 {
 public:
   //! \brief Default constructor.
-  ElmMats(bool lhs = true) : rhsOnly(false), withLHS(lhs) {}
+  explicit ElmMats(bool lhs = true) : rhsOnly(false), withLHS(lhs) {}
   //! \brief Empty destructor.
   virtual ~ElmMats() {}
 

src/Utility/Function.h

@@ -195,7 +195,7 @@ class VecFunc : public utl::SpatialFunction<Vec3>, public FunctionBase
 {
 protected:
   //! \brief The constructor is protected to allow sub-class instances only.
-  VecFunc(size_t n = 3) : utl::SpatialFunction<Vec3>(Vec3()) { ncmp = n; }
+  explicit VecFunc(size_t n = 3) : utl::SpatialFunction<Vec3>(Vec3()) { ncmp = n; }
 
 public:
   //! \brief Empty destructor.

src/Utility/ThreadGroups.h

@@ -33,7 +33,7 @@ public:
   enum StripDirection { U, V, W, ANY };
 
   //! \brief Default constructor.
-  ThreadGroups(StripDirection dir = ANY) : stripDir(dir) {}
+  explicit ThreadGroups(StripDirection dir = ANY) : stripDir(dir) {}
 
   //! \brief Calculates a 2D thread group partitioning based on strips.
   //! \param[in] el1 Flags non-zero knot spans in first parameter direction