- (global input) The number of rows/columns in distributed matrix.
- (global input) Block size, size of the blocks the distributed matrix is split into.
- (local input) The coordinate of the process whose local array row or column is to be determined.
- (global input) The coordinate of the process that possesses the first row or column of the distributed matrix.
- (global input) The total number processes over which the matrix is distributed.
- (output) Value returned by the function.