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[/] [sparc64soc/] [trunk/] [T1-FPU/] [fpu_denorm_3b.v] - Rev 5
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// ========== Copyright Header Begin ========================================== // // OpenSPARC T1 Processor File: fpu_denorm_3b.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 ============================================ /////////////////////////////////////////////////////////////////////////////// // // Three bit comparison of two inputs when both will always have // leading 0s. // /////////////////////////////////////////////////////////////////////////////// module fpu_denorm_3b ( din1, din2, din2_din1_nz, din2_din1_denorm ); input [2:0] din1; // input 1- 3 bits input [2:0] din2; // input 2- 3 bits output din2_din1_nz; // input 1 and input 2 are not 0 output din2_din1_denorm; // input 1 is a denorm wire [2:0] din2_din1_zero; wire din2_din1_nz; wire din2_din1_denorm; assign din2_din1_zero[2:0]= (~(din1 | din2)); assign din2_din1_nz= (!(&din2_din1_zero[2:0])); assign din2_din1_denorm= din2[2] || (din2_din1_zero[2] && din2[1]) || ((&din2_din1_zero[2:1]) && din2[0]); endmodule
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