Transposing in a matrix-vector processor

1. A method comprising:

generating, by at least one multiplexer of a first circuit, elements of a diagonal of a matrix that are positioned in a first vector;

inserting, by a second circuit connected to the first circuit, the elements of the diagonal in a second vector in an order that is a reverse of the order of the elements in the first vector; and

generating, by a third circuit connected to the second circuit, a third vector by placing the elements of the second vector in the third vector in an order that is a rotation of the elements of the diagonal by a predetermined number of positions.

2. The method of claim 1 , further comprising:

counting, by at least one counter of a fourth circuit connected to the third circuit, the predetermined number of positions.

3. The method of claim 2 , further comprising:

adjusting, by the fourth circuit, the predetermined number, the adjustment of the predetermined number comprising:

decrementing the predetermined number in response to the predetermined number being positive; and

resetting the predetermined number to an initial value in response to the predetermined number being zero.

4. The method of claim 1 , wherein the at least one multiplexer comprises a number of multiplexers, the number being equal to a width of the second circuit.

5. The method of claim 1 , wherein:

the at least one multiplexer is a plurality of multiplexers; and

each multiplexer of the plurality of multiplexers generates a corresponding element of the elements of the diagonal.

6. The method of claim 1 , wherein the matrix comprises two or more matrices.

7. The method of claim 1 , wherein the matrix is stored in a static random-access memory accessible by the first circuit.

8. The method of claim 1 , wherein the rotation is in a direction indicated by a signal received by the third circuit.

9. The method of claim 1 , wherein the rotation comprises bit-wise shifting of the elements of the diagonal.

10. The method of claim 1 , wherein the elements in the third vector form a diagonal of a transpose of the matrix.

11. A non-transitory computer program product storing instructions that, when executed by at least one programmable processor within a circuit, cause the at least one programmable processor to perform operations comprising:

generating, by a first part of the circuit, elements of a diagonal of a matrix that are inserted in a first vector;

positioning, by a second part of the circuit connected to the first part of the circuit, the elements of the diagonal in a second vector in an order that is a reverse of the order of the elements in the first vector; and

generating, by a third part of the circuit connected to the second part of the circuit, a third vector by inserting the elements of the second vector in the third vector in an order that is a rotation of the elements of the diagonal by a predetermined number of positions.

12. The non-transitory computer program product of claim 11 , wherein the operations further comprise:

counting, by at least one counter of a fourth part of the circuit that is connected to the third part of the circuit, the predetermined number of positions,

wherein the fourth part of the circuit has a counting circuitry.

13. The non-transitory computer program product of claim 12 , further comprising:

adjusting, by the fourth part of the circuit, the predetermined number, the adjustment of the predetermined number comprising:

decrementing the predetermined number in response to the predetermined number being positive; and

resetting the predetermined number to an initial value in response to the predetermined number being zero.

14. The non-transitory computer program product of claim 11 , wherein:

the first part of the circuit comprises at least one multiplexer, the at least one multiplexer comprising a number of multiplexers, the number being equal to a width of the second part of the circuit; and

each multiplexer generates a corresponding element of the elements of the diagonal.

15. The non-transitory computer program product of claim 11 , wherein:

the rotation is in a direction indicated by a signal received by the third part of the circuit; and

the rotation comprises bit-wise shifting of the elements of the diagonal.

16. The non-transitory computer program product of claim 11 , wherein the elements in the third vector form a diagonal of a transpose of the matrix.

17. A circuit comprising:

a first circuit comprising at least one multiplexer, the at least one multiplexer configured to generate a first vector that has elements of a diagonal of a matrix in a first order;

a second circuit coupled to the first circuit, the second circuit configured to generate a second vector that has the elements in a second order that is a reverse of the first order; and

a third circuit coupled to the second circuit, the third circuit configured to generate a third vector that has the elements in a third order that is a rotation of the elements in the second order by a particular number of positions.

18. The circuit of claim 17 , further comprising:

a fourth circuit coupled to the third circuit, the fourth circuit configured to count the particular number of positions.

19. The circuit of claim 17 , wherein the matrix is stored in a static random-access memory accessible by the first circuit.

20. The circuit of claim 17 , wherein the elements in the third vector form a diagonal of a transpose of the matrix.