Use default affectation and default constructor

This simplifies a bit the code but more importantly makes TinyVector and
TinyMatrix to satisfy std::is_trivial traits

src/algebra/TinyMatrix.hpp

@@ -219,13 +219,7 @@ public:
   }
 
   PASTIS_INLINE
-  constexpr TinyMatrix& operator=(const TinyMatrix& A) noexcept
-  {
-    for (size_t i=0; i<N*N; ++i) {
-      m_values[i] = A.m_values[i];
-    }
-    return *this;
-  }
+  constexpr TinyMatrix& operator=(const TinyMatrix& A) noexcept = default;
 
   PASTIS_INLINE
   constexpr TinyMatrix& operator=(TinyMatrix&& A) noexcept = default;
@@ -239,10 +233,7 @@ public:
   }
 
   PASTIS_INLINE
-  constexpr TinyMatrix() noexcept
-  {
-    ;
-  }
+  constexpr TinyMatrix() noexcept = default;
 
   PASTIS_INLINE
   constexpr TinyMatrix(const ZeroType& z) noexcept
@@ -265,12 +256,7 @@ public:
   }
 
   PASTIS_INLINE
-  constexpr TinyMatrix(const TinyMatrix& A) noexcept
-  {
-    for (size_t i=0; i<N*N; ++i) {
-      m_values[i] = A.m_values[i];
-    }
-  }
+  constexpr TinyMatrix(const TinyMatrix&) noexcept = default;
 
   PASTIS_INLINE
   TinyMatrix(TinyMatrix&& A) noexcept = default;

src/algebra/TinyVector.hpp

@@ -184,13 +184,7 @@ class TinyVector
   }
 
   PASTIS_INLINE
-  const TinyVector& operator=(const TinyVector& v) noexcept
-  {
-    for (size_t i=0; i<N; ++i) {
-      m_values[i] = v.m_values[i];
-    }
-    return *this;
-  }
+  TinyVector& operator=(const TinyVector&) noexcept = default;
 
   PASTIS_INLINE
   constexpr TinyVector& operator=(TinyVector&& v) noexcept = default;
@@ -204,10 +198,7 @@ class TinyVector
   }
 
   PASTIS_INLINE
-  constexpr TinyVector() noexcept
-  {
-    ;
-  }
+  constexpr TinyVector() noexcept = default;
 
   PASTIS_INLINE
   constexpr TinyVector(const ZeroType& z) noexcept
@@ -219,12 +210,7 @@ class TinyVector
   }
 
   PASTIS_INLINE
-  constexpr TinyVector(const TinyVector& v) noexcept
-  {
-    for (size_t i=0; i<N; ++i) {
-      m_values[i] = v.m_values[i];
-    }
-  }
+  constexpr TinyVector(const TinyVector&) noexcept = default;
 
   PASTIS_INLINE
   constexpr TinyVector(TinyVector&& v) noexcept = default;