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[/] [sparc64soc/] [trunk/] [T1-FPU/] [fpu_in2_gt_in1_frac.v] - Rev 2
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// ========== Copyright Header Begin ========================================== // // OpenSPARC T1 Processor File: fpu_in2_gt_in1_frac.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 ============================================ /////////////////////////////////////////////////////////////////////////////// // // Fraction comparison of two inputs that can have any value. // /////////////////////////////////////////////////////////////////////////////// module fpu_in2_gt_in1_frac ( din1, din2, sngop, expadd11, expeq, din2_neq_din1, din2_gt_din1, din2_gt1_din1 ); input [54:0] din1; // input 1- fraction input [54:0] din2; // input 2- fraction input sngop; // single precision inputs input expadd11; // exponent sign bit input expeq; // exponent are equal output din2_neq_din1; // input 2 != input 1- fraction output din2_gt_din1; // input 2 > input 1- fraction output din2_gt1_din1; // input 2 > input 1 wire din2_neq_din1_54_52; wire din2_gt_din1_54_52; wire din2_neq_din1_51_50; wire din2_gt_din1_51_50; wire din2_neq_din1_49_48; wire din2_gt_din1_49_48; wire din2_neq_din1_47_45; wire din2_gt_din1_47_45; wire din2_neq_din1_44_42; wire din2_gt_din1_44_42; wire din2_neq_din1_41_39; wire din2_gt_din1_41_39; wire din2_neq_din1_38_36; wire din2_gt_din1_38_36; wire din2_neq_din1_35_33; wire din2_gt_din1_35_33; wire din2_neq_din1_32_30; wire din2_gt_din1_32_30; wire din2_neq_din1_29_27; wire din2_gt_din1_29_27; wire din2_neq_din1_26_24; wire din2_gt_din1_26_24; wire din2_neq_din1_23_21; wire din2_gt_din1_23_21; wire din2_neq_din1_20_18; wire din2_gt_din1_20_18; wire din2_neq_din1_17_15; wire din2_gt_din1_17_15; wire din2_neq_din1_14_12; wire din2_gt_din1_14_12; wire din2_neq_din1_11_9; wire din2_gt_din1_11_9; wire din2_neq_din1_8_6; wire din2_gt_din1_8_6; wire din2_neq_din1_5_3; wire din2_gt_din1_5_3; wire din2_neq_din1_2_0; wire din2_gt_din1_2_0; wire din2_neq_din1_51_45; wire din2_gt_din1_51_45; wire din2_neq_din1_44_36; wire din2_gt_din1_44_36; wire din2_neq_din1_35_27; wire din2_gt_din1_35_27; wire din2_neq_din1_26_18; wire din2_gt_din1_26_18; wire din2_neq_din1_17_9; wire din2_gt_din1_17_9; wire din2_neq_din1_8_0; wire din2_gt_din1_8_0; wire din2_neq_din1_51_27; wire din2_gt_din1_51_27; wire din2_neq_din1_26_0; wire din2_gt_din1_26_0; wire din2_neq_din1; wire din2_gt_din1; wire din2_gt1_din1; fpu_in2_gt_in1_3b fpu_in2_gt_in1_54_52 ( .din1 (din1[54:52]), .din2 (din2[54:52]), .din2_neq_din1 (din2_neq_din1_54_52), .din2_gt_din1 (din2_gt_din1_54_52) ); fpu_in2_gt_in1_2b fpu_in2_gt_in1_51_50 ( .din1 (din1[51:50]), .din2 (din2[51:50]), .din2_neq_din1 (din2_neq_din1_51_50), .din2_gt_din1 (din2_gt_din1_51_50) ); fpu_in2_gt_in1_2b fpu_in2_gt_in1_49_48 ( .din1 (din1[49:48]), .din2 (din2[49:48]), .din2_neq_din1 (din2_neq_din1_49_48), .din2_gt_din1 (din2_gt_din1_49_48) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_47_45 ( .din1 (din1[47:45]), .din2 (din2[47:45]), .din2_neq_din1 (din2_neq_din1_47_45), .din2_gt_din1 (din2_gt_din1_47_45) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_44_42 ( .din1 (din1[44:42]), .din2 (din2[44:42]), .din2_neq_din1 (din2_neq_din1_44_42), .din2_gt_din1 (din2_gt_din1_44_42) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_41_39 ( .din1 (din1[41:39]), .din2 (din2[41:39]), .din2_neq_din1 (din2_neq_din1_41_39), .din2_gt_din1 (din2_gt_din1_41_39) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_38_36 ( .din1 (din1[38:36]), .din2 (din2[38:36]), .din2_neq_din1 (din2_neq_din1_38_36), .din2_gt_din1 (din2_gt_din1_38_36) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_35_33 ( .din1 (din1[35:33]), .din2 (din2[35:33]), .din2_neq_din1 (din2_neq_din1_35_33), .din2_gt_din1 (din2_gt_din1_35_33) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_32_30 ( .din1 (din1[32:30]), .din2 (din2[32:30]), .din2_neq_din1 (din2_neq_din1_32_30), .din2_gt_din1 (din2_gt_din1_32_30) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_29_27 ( .din1 (din1[29:27]), .din2 (din2[29:27]), .din2_neq_din1 (din2_neq_din1_29_27), .din2_gt_din1 (din2_gt_din1_29_27) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_26_24 ( .din1 (din1[26:24]), .din2 (din2[26:24]), .din2_neq_din1 (din2_neq_din1_26_24), .din2_gt_din1 (din2_gt_din1_26_24) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_23_21 ( .din1 (din1[23:21]), .din2 (din2[23:21]), .din2_neq_din1 (din2_neq_din1_23_21), .din2_gt_din1 (din2_gt_din1_23_21) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_20_18 ( .din1 (din1[20:18]), .din2 (din2[20:18]), .din2_neq_din1 (din2_neq_din1_20_18), .din2_gt_din1 (din2_gt_din1_20_18) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_17_15 ( .din1 (din1[17:15]), .din2 (din2[17:15]), .din2_neq_din1 (din2_neq_din1_17_15), .din2_gt_din1 (din2_gt_din1_17_15) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_14_12 ( .din1 (din1[14:12]), .din2 (din2[14:12]), .din2_neq_din1 (din2_neq_din1_14_12), .din2_gt_din1 (din2_gt_din1_14_12) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_11_9 ( .din1 (din1[11:9]), .din2 (din2[11:9]), .din2_neq_din1 (din2_neq_din1_11_9), .din2_gt_din1 (din2_gt_din1_11_9) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_8_6 ( .din1 (din1[8:6]), .din2 (din2[8:6]), .din2_neq_din1 (din2_neq_din1_8_6), .din2_gt_din1 (din2_gt_din1_8_6) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_5_3 ( .din1 (din1[5:3]), .din2 (din2[5:3]), .din2_neq_din1 (din2_neq_din1_5_3), .din2_gt_din1 (din2_gt_din1_5_3) ); fpu_in2_gt_in1_3b fpu_in2_gt_in1_2_0 ( .din1 (din1[2:0]), .din2 (din2[2:0]), .din2_neq_din1 (din2_neq_din1_2_0), .din2_gt_din1 (din2_gt_din1_2_0) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_51_45 ( .din2_neq_din1_hi (din2_neq_din1_51_50), .din2_gt_din1_hi (din2_gt_din1_51_50), .din2_neq_din1_mid (din2_neq_din1_49_48), .din2_gt_din1_mid (din2_gt_din1_49_48), .din2_neq_din1_lo (din2_neq_din1_47_45), .din2_gt_din1_lo (din2_gt_din1_47_45), .din2_neq_din1 (din2_neq_din1_51_45), .din2_gt_din1 (din2_gt_din1_51_45) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_44_36 ( .din2_neq_din1_hi (din2_neq_din1_44_42), .din2_gt_din1_hi (din2_gt_din1_44_42), .din2_neq_din1_mid (din2_neq_din1_41_39), .din2_gt_din1_mid (din2_gt_din1_41_39), .din2_neq_din1_lo (din2_neq_din1_38_36), .din2_gt_din1_lo (din2_gt_din1_38_36), .din2_neq_din1 (din2_neq_din1_44_36), .din2_gt_din1 (din2_gt_din1_44_36) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_35_27 ( .din2_neq_din1_hi (din2_neq_din1_35_33), .din2_gt_din1_hi (din2_gt_din1_35_33), .din2_neq_din1_mid (din2_neq_din1_32_30), .din2_gt_din1_mid (din2_gt_din1_32_30), .din2_neq_din1_lo (din2_neq_din1_29_27), .din2_gt_din1_lo (din2_gt_din1_29_27), .din2_neq_din1 (din2_neq_din1_35_27), .din2_gt_din1 (din2_gt_din1_35_27) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_26_18 ( .din2_neq_din1_hi (din2_neq_din1_26_24), .din2_gt_din1_hi (din2_gt_din1_26_24), .din2_neq_din1_mid (din2_neq_din1_23_21), .din2_gt_din1_mid (din2_gt_din1_23_21), .din2_neq_din1_lo (din2_neq_din1_20_18), .din2_gt_din1_lo (din2_gt_din1_20_18), .din2_neq_din1 (din2_neq_din1_26_18), .din2_gt_din1 (din2_gt_din1_26_18) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_17_9 ( .din2_neq_din1_hi (din2_neq_din1_17_15), .din2_gt_din1_hi (din2_gt_din1_17_15), .din2_neq_din1_mid (din2_neq_din1_14_12), .din2_gt_din1_mid (din2_gt_din1_14_12), .din2_neq_din1_lo (din2_neq_din1_11_9), .din2_gt_din1_lo (din2_gt_din1_11_9), .din2_neq_din1 (din2_neq_din1_17_9), .din2_gt_din1 (din2_gt_din1_17_9) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_8_0 ( .din2_neq_din1_hi (din2_neq_din1_8_6), .din2_gt_din1_hi (din2_gt_din1_8_6), .din2_neq_din1_mid (din2_neq_din1_5_3), .din2_gt_din1_mid (din2_gt_din1_5_3), .din2_neq_din1_lo (din2_neq_din1_2_0), .din2_gt_din1_lo (din2_gt_din1_2_0), .din2_neq_din1 (din2_neq_din1_8_0), .din2_gt_din1 (din2_gt_din1_8_0) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_51_27 ( .din2_neq_din1_hi (din2_neq_din1_51_45), .din2_gt_din1_hi (din2_gt_din1_51_45), .din2_neq_din1_mid (din2_neq_din1_44_36), .din2_gt_din1_mid (din2_gt_din1_44_36), .din2_neq_din1_lo (din2_neq_din1_35_27), .din2_gt_din1_lo (din2_gt_din1_35_27), .din2_neq_din1 (din2_neq_din1_51_27), .din2_gt_din1 (din2_gt_din1_51_27) ); fpu_in2_gt_in1_3to1 fpu_in2_gt_in1_26_0 ( .din2_neq_din1_hi (din2_neq_din1_26_18), .din2_gt_din1_hi (din2_gt_din1_26_18), .din2_neq_din1_mid (din2_neq_din1_17_9), .din2_gt_din1_mid (din2_gt_din1_17_9), .din2_neq_din1_lo (din2_neq_din1_8_0), .din2_gt_din1_lo (din2_gt_din1_8_0), .din2_neq_din1 (din2_neq_din1_26_0), .din2_gt_din1 (din2_gt_din1_26_0) ); assign din2_neq_din1= din2_neq_din1_51_27 || din2_neq_din1_26_0 || (din2_neq_din1_54_52 && sngop); assign din2_gt_din1= (din2_neq_din1_54_52 && din2_gt_din1_54_52 && sngop) || ((!(din2_neq_din1_54_52 && sngop)) && din2_neq_din1_51_27 && din2_gt_din1_51_27) || ((!(din2_neq_din1_54_52 && sngop)) && (!din2_neq_din1_51_27) && din2_gt_din1_26_0); assign din2_gt1_din1= expadd11 || (din2_gt_din1 && expeq); endmodule