| // ========== Copyright Header Begin ========================================== |
| // |
| // OpenSPARC T1 Processor File: fpu_in2_gt_in1_3to1.v |
| // Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. |
| // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. |
| // |
| // The above named program is free software; you can redistribute it and/or |
| // modify it under the terms of the GNU General Public |
| // License version 2 as published by the Free Software Foundation. |
| // |
| // The above named program is distributed in the hope that it will be |
| // useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| // General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public |
| // License along with this work; if not, write to the Free Software |
| // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |
| // |
| // ========== Copyright Header End ============================================ |
| /////////////////////////////////////////////////////////////////////////////// |
| // |
| // Reduce three fpu_in2_gt_in1_*b results to one set of results. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| module fpu_in2_gt_in1_3to1 ( |
| din2_neq_din1_hi, |
| din2_gt_din1_hi, |
| din2_neq_din1_mid, |
| din2_gt_din1_mid, |
| din2_neq_din1_lo, |
| din2_gt_din1_lo, |
| |
| din2_neq_din1, |
| din2_gt_din1 |
| ); |
| |
| |
| input din2_neq_din1_hi; // input 2 != input 1- high 3 bits |
| input din2_gt_din1_hi; // input 2 > input 1- high 3 bits |
| input din2_neq_din1_mid; // input 2 != input 1- middle 3 bits |
| input din2_gt_din1_mid; // input 2 > input 1- middle 3 bits |
| input din2_neq_din1_lo; // input 2 != input 1- low 3 bits |
| input din2_gt_din1_lo; // input 2 > input 1- low 3 bits |
| |
| output din2_neq_din1; // input 2 doesn't equal input 1 |
| output din2_gt_din1; // input 2 is greater than input 1 |
| |
| |
| wire din2_neq_din1; |
| wire din2_gt_din1; |
| |
| |
| assign din2_neq_din1= din2_neq_din1_hi || din2_neq_din1_mid || din2_neq_din1_lo; |
| |
| assign din2_gt_din1= (din2_neq_din1_hi && din2_gt_din1_hi) |
| || ((!din2_neq_din1_hi) && din2_neq_din1_mid |
| && din2_gt_din1_mid) |
| || ((!din2_neq_din1_hi) && (!din2_neq_din1_mid) |
| && din2_gt_din1_lo); |
| |
| |
| endmodule |
| |
| |