make member functions inline

Author: Jingchun Wang

nbvh/aabb.hh

@@ -36,8 +36,8 @@ struct Aabb
     typedef T value_type;
     typedef VectorN<T, N> type;
 
-    const VectorN<T, N> &operator[](size_t i) const { return p[i]; }
-    VectorN<T, N> &operator[](size_t i) { return p[i]; }
+    inline const VectorN<T, N> &operator[](size_t i) const { return p[i]; }
+    inline VectorN<T, N> &operator[](size_t i) { return p[i]; }
 
     VectorN<T, N> p[2]; // p_min, p_max
 };

nbvh/nvec.hh

@@ -43,11 +43,11 @@ struct VectorN
 
     static constexpr size_t size() noexcept { return N; }
 
-    const T &operator[](size_t i) const { return v[i]; }
-    T &operator[](size_t i) { return v[i]; }
+    inline const T &operator[](size_t i) const { return v[i]; }
+    inline T &operator[](size_t i) { return v[i]; }
 
-    operator const T *() const { return &v[0]; }
-    operator T *() { return &v[0]; }
+    inline operator const T *() const { return &v[0]; }
+    inline operator T *() { return &v[0]; }
 
     T v[N];
 };