+ matrix multiplication
- TODO: xmm0[last] = sum xmm0
- TODO: xmm2, xmm3 = A[i]
+ FDCT for one matrix
+ FDCT
+ IDCT
+ C matrix, C^T matrix
- TODO: xmm0, xmm1 = B[j]
+ transpose matrix
bugfix: move to/from memory
bugfix: write result to wrong xmm register
* align memory to 16 bytes
+ C^-1 matrix, C^-1^T matrix
bugfix: cmatrix -> cmatrix/sqrt(8)
- TODO: change cmatrixt to invcmatrix
- TODO: change cmatrix to invcmatrixt
* Cosmetic changes