| <h3 id='___get_cell_cofactors'>get_cell_cofactors</h3> | |
| <pre>Get combinational cell pin Shannon expansion cofactors | |
| <b>Usage:</b> @cofactors = get_cell_cofactors($cell, $pin); | |
| $cell: Leaf cell name | |
| $pin: Input pin name | |
| @cofactors: Shannon cofactors for the pin of the cell | |
| It has two items if the cell is combinational | |
| It is empty if the cell is sequential or black-box | |
| <b>Examples:</b> | |
| #1. NAND2X1 A pin | |
| @ret = get_cell_cofactors("NAND2X1", "A"); # @ret = (1, B); | |
| #2. AOI222X1 A0 pin | |
| @ret = get_cell_cofactors("OAI222X4", "A0"); | |
| returned @ret = ("!(A1*(B0*(C0+C1)+!B0*(B1*(C0+C1))))", "!(B0*(C0+C1)+!B0*(B1*(C0+C1)))"); | |
| </pre> |