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mul8_247.m
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mul8_247.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 ] = mul8_247( a, b )
% Approximate function mul8_247
% Library = EvoApprox8b
% Circuit = mul8_247
% Area (180) = 4920
% Delay (180) = 3.520
% Power (180) = 2115.70
% Area (45) = 352
% Delay (45) = 1.290
% Power (45) = 182.70
% Nodes = 81
% HD = 324064
% MAE = 262.84042
% MSE = 124513.63086
% MRE = 5.84 %
% WCE = 1648
% WCRE = 400 %
% EP = 98.2 %
a = uint16(a);
b = uint16(b);
c = 0;
n0 = bitand(bitshift(a, -0), 1, 'uint16');
n2 = bitand(bitshift(a, -1), 1, 'uint16');
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');
n18 = bitand(bitshift(b, -1), 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');
n36 = bitcmp(bitor(n26, bitor(n4, n30)));
n38 = bitand(n18, n4);
n41 = bitand(n2, n28);
n51 = bitand(n38, n30);
n55 = bitand(n51, n12);
n57 = bitcmp(n41);
n67 = bitcmp(n55);
n79 = bitor(bitand(n18, n20), bitand(bitcmp(n18), n30));
n83 = bitand(n79, n36);
n145 = bitand(n57, n12);
n173 = bitcmp(bitand(n145, n28));
n174 = bitcmp(bitor(n67, n0));
n249 = bitcmp(n57);
n398 = bitcmp(n173);
n399 = bitcmp(n173);
n415 = bitand(n249, n174);
n514 = bitand(n10, n20);
n532 = bitand(n12, n20);
n548 = bitand(n14, n20);
n598 = n399;
n648 = bitxor(n398, n514);
n664 = bitor(n249, n532);
n682 = bitxor(n415, n548);
n683 = bitand(n415, n548);
n764 = bitand(n8, n22);
n782 = bitand(n10, n22);
n798 = bitand(n12, n22);
n814 = bitand(n14, n22);
n898 = bitor(n648, n764);
n914 = bitor(n664, n782);
n932 = bitxor(n682, n798);
n933 = bitand(n682, n798);
n948 = bitxor(bitxor(n683, n814), n933);
n949 = bitor(bitor(bitand(n683, n814), bitand(n814, n933)), bitand(n683, n933));
n1014 = bitand(n6, n24);
n1032 = bitand(n8, n24);
n1048 = bitand(n10, n24);
n1064 = bitand(n12, n24);
n1065 = bitand(n12, n24);
n1082 = bitand(n14, n24);
n1148 = bitxor(n898, n1014);
n1149 = bitand(n898, n1014);
n1164 = bitxor(bitxor(n914, n1032), n1149);
n1165 = bitor(bitor(bitand(n914, n1032), bitand(n1032, n1149)), bitand(n914, n1149));
n1182 = bitxor(bitxor(n932, n1048), n1165);
n1183 = bitor(bitor(bitand(n932, n1048), bitand(n1048, n1165)), bitand(n932, n1165));
n1198 = bitxor(bitxor(n948, n1064), n1183);
n1199 = bitor(bitor(bitand(n948, n1064), bitand(n1064, n1183)), bitand(n948, n1183));
n1214 = bitxor(bitxor(n949, n1082), n1199);
n1215 = bitor(bitor(bitand(n949, n1082), bitand(n1082, n1199)), bitand(n949, n1199));
n1264 = bitand(n4, n26);
n1282 = bitand(n6, n26);
n1298 = bitand(n8, n26);
n1314 = bitand(n10, n26);
n1332 = bitand(n12, n26);
n1348 = bitand(n14, n26);
n1399 = bitor(n1148, n1264);
n1414 = bitxor(bitxor(n1164, n1282), n1399);
n1415 = bitor(bitor(bitand(n1164, n1282), bitand(n1282, n1399)), bitand(n1164, n1399));
n1432 = bitxor(bitxor(n1182, n1298), n1415);
n1433 = bitor(bitor(bitand(n1182, n1298), bitand(n1298, n1415)), bitand(n1182, n1415));
n1448 = bitxor(bitxor(n1198, n1314), n1433);
n1449 = bitor(bitor(bitand(n1198, n1314), bitand(n1314, n1433)), bitand(n1198, n1433));
n1464 = bitxor(bitxor(n1214, n1332), n1449);
n1465 = bitor(bitor(bitand(n1214, n1332), bitand(n1332, n1449)), bitand(n1214, n1449));
n1482 = bitxor(bitxor(n1215, n1348), n1465);
n1483 = bitor(bitor(bitand(n1215, n1348), bitand(n1348, n1465)), bitand(n1215, n1465));
n1532 = bitand(n4, n28);
n1548 = bitand(n6, n28);
n1564 = bitand(n8, n28);
n1582 = bitand(n10, n28);
n1598 = bitand(n12, n28);
n1614 = bitand(n14, n28);
n1632 = n1433;
n1664 = bitxor(n1414, n1532);
n1665 = bitand(n1414, n1532);
n1682 = bitxor(bitxor(n1432, n1548), n1665);
n1683 = bitor(bitor(bitand(n1432, n1548), bitand(n1548, n1665)), bitand(n1432, n1665));
n1698 = bitxor(bitxor(n1448, n1564), n1683);
n1699 = bitor(bitor(bitand(n1448, n1564), bitand(n1564, n1683)), bitand(n1448, n1683));
n1714 = bitxor(bitxor(n1464, n1582), n1699);
n1715 = bitor(bitor(bitand(n1464, n1582), bitand(n1582, n1699)), bitand(n1464, n1699));
n1732 = bitxor(bitxor(n1482, n1598), n1715);
n1733 = bitor(bitor(bitand(n1482, n1598), bitand(n1598, n1715)), bitand(n1482, n1715));
n1748 = bitxor(bitxor(n1483, n1614), n1733);
n1749 = bitor(bitor(bitand(n1483, n1614), bitand(n1614, n1733)), bitand(n1483, n1733));
n1764 = bitand(n0, n30);
n1782 = bitand(n2, n30);
n1798 = bitand(n4, n30);
n1814 = bitand(n6, n30);
n1832 = bitand(n8, n30);
n1848 = bitand(n10, n30);
n1864 = bitand(n12, n30);
n1882 = bitand(n14, n30);
n1898 = bitxor(n415, n1764);
n1914 = bitxor(n1664, n1782);
n1915 = bitand(n1664, n1782);
n1932 = bitxor(bitxor(n1682, n1798), n1915);
n1933 = bitor(bitor(bitand(n1682, n1798), bitand(n1798, n1915)), bitand(n1682, n1915));
n1948 = bitxor(bitxor(n1698, n1814), n1933);
n1949 = bitor(bitor(bitand(n1698, n1814), bitand(n1814, n1933)), bitand(n1698, n1933));
n1964 = bitxor(bitxor(n1714, n1832), n1949);
n1965 = bitor(bitor(bitand(n1714, n1832), bitand(n1832, n1949)), bitand(n1714, n1949));
n1982 = bitxor(bitxor(n1732, n1848), n1965);
n1983 = bitor(bitor(bitand(n1732, n1848), bitand(n1848, n1965)), bitand(n1732, n1965));
n1998 = bitxor(bitxor(n1748, n1864), n1983);
n1999 = bitor(bitor(bitand(n1748, n1864), bitand(n1864, n1983)), bitand(n1748, n1983));
n2014 = bitxor(bitxor(n1749, n1882), n1999);
n2015 = bitor(bitor(bitand(n1749, n1882), bitand(n1882, n1999)), bitand(n1749, n1999));
c = bitor(c, bitshift(bitand(n1065, 1), 0));
c = bitor(c, bitshift(bitand(n598, 1), 1));
c = bitor(c, bitshift(bitand(n83, 1), 2));
c = bitor(c, bitshift(bitand(n1632, 1), 3));
c = bitor(c, bitshift(bitand(n1165, 1), 4));
c = bitor(c, bitshift(bitand(n1082, 1), 5));
c = bitor(c, bitshift(bitand(n1632, 1), 6));
c = bitor(c, bitshift(bitand(n1898, 1), 7));
c = bitor(c, bitshift(bitand(n1914, 1), 8));
c = bitor(c, bitshift(bitand(n1932, 1), 9));
c = bitor(c, bitshift(bitand(n1948, 1), 10));
c = bitor(c, bitshift(bitand(n1964, 1), 11));
c = bitor(c, bitshift(bitand(n1982, 1), 12));
c = bitor(c, bitshift(bitand(n1998, 1), 13));
c = bitor(c, bitshift(bitand(n2014, 1), 14));
c = bitor(c, bitshift(bitand(n2015, 1), 15));
end