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add8_282.m
84 lines (83 loc) · 2.87 KB
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add8_282.m
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% This code is a part of EvoApproxLib library (ehw.fit.vutbr.cz/approxlib) distributed under The MIT License.
% When used, please cite the following article(s): V. Mrazek, R. Hrbacek, Z. Vasicek and L. Sekanina, "EvoApprox8b: Library of approximate adders and multipliers for circuit design and benchmarking of approximation methods". Design, Automation & Test in Europe Conference & Exhibition (DATE), 2017, Lausanne, 2017, pp. 258-261. doi: 10.23919/DATE.2017.7926993
% This file contains a circuit from evoapprox8b dataset. Note that a new version of library was already published.
function [ c ] = add8_282( a, b )
% Approximate function add8_282
% Library = EvoApprox8b
% Circuit = add8_282
% Area (180) = 1264
% Delay (180) = 0.880
% Power (180) = 358.50
% Area (45) = 89
% Delay (45) = 0.370
% Power (45) = 28.53
% Nodes = 31
% HD = 188032
% MAE = 5.25391
% MSE = 44.50000
% MRE = 2.73 %
% WCE = 16
% WCRE = 400 %
% EP = 92.6 %
a = uint16(a);
b = uint16(b);
c = 0;
n4 = bitand(bitshift(a, -2), 1, 'uint16');
n6 = bitand(bitshift(a, -3), 1, 'uint16');
n8 = bitand(bitshift(a, -4), 1, 'uint16');
n10 = bitand(bitshift(a, -5), 1, 'uint16');
n12 = bitand(bitshift(a, -6), 1, 'uint16');
n14 = bitand(bitshift(a, -7), 1, 'uint16');
n20 = bitand(bitshift(b, -2), 1, 'uint16');
n22 = bitand(bitshift(b, -3), 1, 'uint16');
n24 = bitand(bitshift(b, -4), 1, 'uint16');
n26 = bitand(bitshift(b, -5), 1, 'uint16');
n28 = bitand(bitshift(b, -6), 1, 'uint16');
n30 = bitand(bitshift(b, -7), 1, 'uint16');
n44 = bitor(n28, n12);
n46 = bitand(n26, n10);
n48 = bitcmp(bitor(n24, bitor(n8, n6)));
n49 = bitcmp(bitor(n24, bitor(n8, n6)));
n69 = bitand(n8, n24);
n70 = n69;
n72 = bitxor(n24, n8);
n73 = bitand(n24, n8);
n78 = bitxor(n10, n26);
n79 = bitand(n10, n26);
n81 = n79;
n86 = bitxor(n12, n28);
n87 = bitand(n12, n28);
n96 = bitxor(n14, n30);
n97 = bitand(n14, n30);
n129 = n44;
n135 = bitor(n26, n10);
n136 = n135;
n153 = n70;
n160 = n96;
n162 = bitand(n129, n46);
n170 = n129;
n177 = bitcmp(n49);
n181 = bitor(n87, n162);
n206 = n136;
n209 = n181;
n226 = bitand(n206, n153);
n245 = bitor(n81, n226);
n254 = bitand(n170, n226);
n273 = bitor(n209, n254);
n345 = bitor(n48, n72);
n377 = n160;
n394 = bitxor(n78, n73);
n404 = bitxor(n86, n245);
n412 = bitxor(n377, n273);
n413 = bitand(n377, n273);
n422 = bitor(n97, n413);
c = bitor(c, bitshift(bitand(n4, 1), 0));
c = bitor(c, bitshift(bitand(n20, 1), 1));
c = bitor(c, bitshift(bitand(n345, 1), 2));
c = bitor(c, bitshift(bitand(n22, 1), 3));
c = bitor(c, bitshift(bitand(n177, 1), 4));
c = bitor(c, bitshift(bitand(n394, 1), 5));
c = bitor(c, bitshift(bitand(n404, 1), 6));
c = bitor(c, bitshift(bitand(n412, 1), 7));
c = bitor(c, bitshift(bitand(n422, 1), 8));
end