Implement missing Matrix members

include/J3ML/LinearAlgebra/Matrix3x3.h

@@ -4,6 +4,7 @@
 #include <J3ML/LinearAlgebra/Vector2.h>
 #include <J3ML/LinearAlgebra/Vector3.h>
 #include <J3ML/LinearAlgebra/Quaternion.h>
+#include <cstring>
 
 namespace J3ML::LinearAlgebra {
 
@@ -47,7 +48,7 @@ namespace J3ML::LinearAlgebra {
         @param m The matrix to store the result.
         @param angle The rotation angle in radians. */
     template <typename Matrix>
-    void Set3x3RotatePartZ(Matrix &m, float angle)
+    void Set3x3PartRotateZ(Matrix &m, float angle)
     {
         float sinz, cosz;
         sinz = std::sin(angle);
@@ -274,7 +275,6 @@ namespace J3ML::LinearAlgebra {
         /// Sets this matrix to equal the identity.
         void SetIdentity();
 
-
         void SwapColumns(int col1, int col2);
 
         void SwapRows(int row1, int row2);
@@ -291,7 +291,7 @@ namespace J3ML::LinearAlgebra {
         /// Sets all values of this matrix.
         /// @param valuesThe values in this array will be copied over to this matrix. The source must contain 9 floats in row-major order
         /// (the same order as the Set() function aove has its input parameters in).
-        void Set(const float *values);
+        void Set(const float *p);
 
         /// Orthonormalizes the basis formed by the column vectors of this matrix.
         void Orthonormalize(int c0, int c1, int c2);
@@ -383,8 +383,16 @@ namespace J3ML::LinearAlgebra {
 
         void InverseOrthonormal();
 
+        /// Inverts a symmetric matrix.
+        /** This function is faster than directly calling Inverse()
+            This function computes 6 LOADs, 9 STOREs, 21 MULs, 1 DIV, 1 CMP, and 8 ADDs.
+            @return True if computing the inverse succeeded, false otherwise (determinant was zero).
+            @note If this function fails, the original matrix is not modified.
+            @note This function operates in-place. */
         bool InverseSymmetric();
 
+        /// Transposes this matrix.
+        /// This operation swaps all elements with respect to the diagonal.
         void Transpose();