1 files changed, 28 insertions, 0 deletions
diff --git a/matrix.hpp b/matrix.hpp
index ada303b..1e84db0 100644
--- a/matrix.hpp
+++ b/matrix.hpp
@@ -141,6 +141,18 @@ public:
 template<typename T, std::size_t S>
 class sqmatrix final : public matrix<T, S, S>
 {
+public:
+    constexpr sqmatrix(const std::array<std::array<T, S>, S> &vs) :
+        matrix<T, S, S>(vs)
+    {}
+
+    constexpr sqmatrix(const std::array<T, S * S> &vs) :
+        matrix<T, S, S>(vs)
+    {}
+
+    constexpr sqmatrix(T a) :
+        matrix<T, S, S>(a) {}
+
     static constexpr sqmatrix identity()
     {
         sqmatrix ret(0);
@@ -176,6 +188,14 @@ class sqmatrix final : public matrix<T, S, S>
 template<typename T, std::size_t L>
 class rowmatrix final : public matrix<T, L, 1>
 {
+public:
+    constexpr rowmatrix(const std::array<T, L> &vs) :
+        matrix<T, L, 1>(vs)
+    {}
+
+    constexpr rowmatrix(T a) :
+        matrix<T, L, 1>(a) {}
+
     constexpr T &operator[](std::size_t i) const
     {
         return this->v[i];
@@ -189,6 +209,14 @@ class rowmatrix final : public matrix<T, L, 1>
 template<typename T, std::size_t L>
 class colmatrix final : public matrix<T, 1, L>
 {
+public:
+    constexpr colmatrix(const std::array<T, L> &vs) :
+        matrix<T, 1, L>(vs)
+    {}
+
+    constexpr colmatrix(T a) :
+        matrix<T, 1, L>(a) {}
+
     constexpr T &operator[](std::size_t i) const
     {
         return this->v[i];