What kind of matrix transformation can be in this code?

Question

Mathematics

What kind of matrix transformation can be in this code?

mat[3][0] += a0.y * mat[0][0] + a0.z * mat[1][0] + a0.x * mat[2][0]; 
mat[3][1] += a0.y * mat[0][1] + a0.z * mat[1][1] + a0.x * mat[2][1]; 
mat[3][2] += a0.y * mat[0][2] + a0.z * mat[1][2] + a0.x * mat[2][2];

Answer 1

Since m3i is being transformed here, it's just a translation (relocation)
M3'=M3+S, where S=M*A0
Only someone connected the matrices M and M3.
And if you look at x, y, z, then there is generally a magical transformation. In any case, a composite of the main ones (transfer, scaling, rotation).