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mul8_261.m
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mul8_261.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_261( a, b )
% Approximate function mul8_261
% Library = EvoApprox8b
% Circuit = mul8_261
% Area (180) = 4172
% Delay (180) = 2.170
% Power (180) = 1528.10
% Area (45) = 304
% Delay (45) = 0.830
% Power (45) = 130.00
% Nodes = 79
% HD = 376002
% MAE = 624.46875
% MSE = 679898.57422
% MRE = 10.00 %
% WCE = 2911
% WCRE = 700 %
% EP = 99.0 %
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');
n41 = bitcmp(bitxor(n12, n12));
n42 = bitcmp(n41);
n43 = bitcmp(n41);
n49 = bitcmp(bitand(n18, n12));
n71 = bitor(n14, n8);
n82 = bitcmp(bitor(n6, bitor(n4, n71)));
n83 = bitcmp(bitor(n6, bitor(n4, n71)));
n87 = bitor(n26, n24);
n89 = bitcmp(bitand(n2, bitand(n28, n83)));
n91 = bitcmp(bitor(n87, bitor(n28, n22)));
n157 = bitcmp(bitor(bitand(n89, n82), n91));
n190 = bitcmp(n43);
n372 = bitand(n14, n20);
n386 = bitand(n6, n4);
n420 = bitand(n26, n386);
n461 = bitand(n10, n22);
n476 = bitand(n12, n22);
n485 = bitcmp(n49);
n491 = bitand(n14, n22);
n506 = bitand(n0, n20);
n564 = bitand(n8, n24);
n580 = bitand(n10, n24);
n594 = bitand(n12, n24);
n608 = bitand(n14, n24);
n683 = bitand(n8, n26);
n699 = bitand(n10, n26);
n712 = bitand(n12, n26);
n728 = bitand(n14, n26);
n761 = bitcmp(n41);
n786 = bitand(n6, n28);
n802 = bitand(n8, n28);
n816 = bitand(n10, n28);
n817 = bitand(n10, n28);
n832 = bitand(n12, n28);
n846 = bitand(n14, n28);
n847 = bitand(n14, n28);
n890 = bitand(n4, n30);
n906 = bitand(n6, n30);
n920 = bitand(n8, n30);
n921 = bitand(n8, n30);
n934 = bitand(n10, n30);
n950 = bitand(n12, n30);
n964 = bitand(n14, n30);
n1034 = bitcmp(bitxor(n921, n920));
n1107 = n491;
n1173 = bitor(n461, n564);
n1186 = bitxor(n476, n580);
n1187 = bitand(n476, n580);
n1202 = bitxor(bitxor(n1107, n594), n699);
n1203 = bitor(bitor(bitand(n1107, n594), bitand(n594, n699)), bitand(n1107, n699));
n1216 = bitand(n608, n712);
n1232 = bitxor(n608, n712);
n1246 = bitcmp(bitor(n26, n1034));
n1335 = bitor(bitor(bitand(n817, n42), bitand(n42, n43)), bitand(n817, n43));
n1350 = bitxor(bitxor(n372, n420), n1186);
n1351 = bitor(bitor(bitand(n372, n420), bitand(n420, n1186)), bitand(n372, n1186));
n1408 = bitor(n1173, n786);
n1424 = bitxor(bitxor(n1187, n802), n906);
n1425 = bitor(bitor(bitand(n1187, n802), bitand(n802, n906)), bitand(n1187, n906));
n1438 = bitxor(bitxor(n1203, n816), n920);
n1439 = bitor(bitor(bitand(n1203, n816), bitand(n816, n920)), bitand(n1203, n920));
n1454 = bitxor(bitxor(n1216, n832), n934);
n1455 = bitor(bitor(bitand(n1216, n832), bitand(n832, n934)), bitand(n1216, n934));
n1468 = bitand(n846, n950);
n1482 = bitxor(n847, n950);
n1542 = n157;
n1543 = n157;
n1586 = bitxor(bitxor(n1350, n1335), n1408);
n1587 = bitor(bitor(bitand(n1350, n1335), bitand(n1335, n1408)), bitand(n1350, n1408));
n1602 = bitxor(bitxor(n1202, n1216), n1424);
n1603 = bitor(bitor(bitand(n1202, n1216), bitand(n1216, n1424)), bitand(n1202, n1424));
n1616 = bitand(n1232, n1438);
n1632 = bitor(n1232, n1438);
n1646 = bitand(n728, n1454);
n1660 = bitxor(n728, n1454);
n1720 = bitxor(n1425, n1543);
n1750 = bitor(n1586, n890);
n1764 = bitxor(bitxor(n1602, n1587), n1351);
n1765 = bitor(bitor(bitand(n1602, n1587), bitand(n1587, n1351)), bitand(n1602, n1351));
n1780 = bitxor(bitxor(n1632, n1603), n1425);
n1781 = bitor(bitor(bitand(n1632, n1603), bitand(n1603, n1425)), bitand(n1632, n1425));
n1794 = bitxor(bitxor(n1660, n1616), n1439);
n1795 = bitor(bitor(bitand(n1660, n1616), bitand(n1616, n1439)), bitand(n1660, n1439));
n1808 = bitxor(bitxor(n1482, n1646), n1455);
n1809 = bitor(bitor(bitand(n1482, n1646), bitand(n1646, n1455)), bitand(n1482, n1455));
n1824 = bitand(n41, n1468);
n1838 = bitxor(n964, n1468);
n1869 = bitcmp(bitor(n761, n1034));
n1882 = n1720;
n1898 = bitor(n485, n890);
n1912 = bitor(bitand(n683, n190), bitand(bitcmp(n683), n1750));
n1928 = n1764;
n1942 = bitxor(n1780, n1765);
n1943 = bitand(n1780, n1765);
n1956 = bitxor(bitxor(n1794, n1781), n1943);
n1957 = bitor(bitor(bitand(n1794, n1781), bitand(n1781, n1943)), bitand(n1794, n1943));
n1972 = bitxor(bitxor(n1808, n1795), n1957);
n1973 = bitor(bitor(bitand(n1808, n1795), bitand(n1795, n1957)), bitand(n1808, n1957));
n1986 = bitxor(bitxor(n1838, n1809), n1973);
n1987 = bitor(bitor(bitand(n1838, n1809), bitand(n1809, n1973)), bitand(n1838, n1973));
n2016 = bitor(n1824, n1987);
c = bitor(c, bitshift(bitand(n761, 1), 0));
c = bitor(c, bitshift(bitand(n1542, 1), 1));
c = bitor(c, bitshift(bitand(n1246, 1), 2));
c = bitor(c, bitshift(bitand(n1216, 1), 3));
c = bitor(c, bitshift(bitand(n1869, 1), 4));
c = bitor(c, bitshift(bitand(n506, 1), 5));
c = bitor(c, bitshift(bitand(n1543, 1), 6));
c = bitor(c, bitshift(bitand(n1882, 1), 7));
c = bitor(c, bitshift(bitand(n1898, 1), 8));
c = bitor(c, bitshift(bitand(n1912, 1), 9));
c = bitor(c, bitshift(bitand(n1928, 1), 10));
c = bitor(c, bitshift(bitand(n1942, 1), 11));
c = bitor(c, bitshift(bitand(n1956, 1), 12));
c = bitor(c, bitshift(bitand(n1972, 1), 13));
c = bitor(c, bitshift(bitand(n1986, 1), 14));
c = bitor(c, bitshift(bitand(n2016, 1), 15));
end