/*** * 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. ***/ #include #include /// Approximate function mul8_125 /// Library = EvoApprox8b /// Circuit = mul8_125 /// Area (180) = 8572 /// Delay (180) = 5.270 /// Power (180) = 4461.30 /// Area (45) = 624 /// Delay (45) = 1.950 /// Power (45) = 387.40 /// Nodes = 129 /// HD = 61496 /// MAE = 4.08594 /// MSE = 72.75000 /// MRE = 0.16 % /// WCE = 36 /// WCRE = 100 % /// EP = 43.5 % uint16_t mul8_125(uint8_t a, uint8_t b) { uint16_t c = 0; uint8_t n0 = (a >> 0) & 0x1; uint8_t n2 = (a >> 1) & 0x1; uint8_t n4 = (a >> 2) & 0x1; uint8_t n6 = (a >> 3) & 0x1; uint8_t n8 = (a >> 4) & 0x1; uint8_t n10 = (a >> 5) & 0x1; uint8_t n12 = (a >> 6) & 0x1; uint8_t n14 = (a >> 7) & 0x1; uint8_t n16 = (b >> 0) & 0x1; uint8_t n18 = (b >> 1) & 0x1; uint8_t n20 = (b >> 2) & 0x1; uint8_t n22 = (b >> 3) & 0x1; uint8_t n24 = (b >> 4) & 0x1; uint8_t n26 = (b >> 5) & 0x1; uint8_t n28 = (b >> 6) & 0x1; uint8_t n30 = (b >> 7) & 0x1; uint8_t n32; uint8_t n47; uint8_t n49; uint8_t n51; uint8_t n54; uint8_t n55; uint8_t n62; uint8_t n65; uint8_t n70; uint8_t n73; uint8_t n81; uint8_t n82; uint8_t n98; uint8_t n114; uint8_t n132; uint8_t n137; uint8_t n148; uint8_t n164; uint8_t n169; uint8_t n183; uint8_t n198; uint8_t n214; uint8_t n232; uint8_t n248; uint8_t n264; uint8_t n282; uint8_t n298; uint8_t n299; uint8_t n314; uint8_t n315; uint8_t n332; uint8_t n333; uint8_t n348; uint8_t n349; uint8_t n364; uint8_t n365; uint8_t n382; uint8_t n383; uint8_t n398; uint8_t n399; uint8_t n414; uint8_t n415; uint8_t n432; uint8_t n448; uint8_t n464; uint8_t n482; uint8_t n498; uint8_t n514; uint8_t n532; uint8_t n548; uint8_t n564; uint8_t n582; uint8_t n598; uint8_t n614; uint8_t n615; uint8_t n632; uint8_t n633; uint8_t n648; uint8_t n649; uint8_t n664; uint8_t n665; uint8_t n682; uint8_t n683; uint8_t n698; uint8_t n714; uint8_t n732; uint8_t n748; uint8_t n764; uint8_t n782; uint8_t n798; uint8_t n814; uint8_t n832; uint8_t n833; uint8_t n848; uint8_t n849; uint8_t n864; uint8_t n865; uint8_t n882; uint8_t n883; uint8_t n898; uint8_t n899; uint8_t n914; uint8_t n915; uint8_t n932; uint8_t n933; uint8_t n948; uint8_t n949; uint8_t n964; uint8_t n982; uint8_t n998; uint8_t n1014; uint8_t n1032; uint8_t n1048; uint8_t n1064; uint8_t n1082; uint8_t n1098; uint8_t n1099; uint8_t n1114; uint8_t n1115; uint8_t n1132; uint8_t n1133; uint8_t n1148; uint8_t n1149; uint8_t n1164; uint8_t n1165; uint8_t n1182; uint8_t n1183; uint8_t n1198; uint8_t n1199; uint8_t n1214; uint8_t n1215; uint8_t n1232; uint8_t n1248; uint8_t n1264; uint8_t n1282; uint8_t n1298; uint8_t n1314; uint8_t n1332; uint8_t n1348; uint8_t n1364; uint8_t n1365; uint8_t n1382; uint8_t n1383; uint8_t n1398; uint8_t n1399; uint8_t n1414; uint8_t n1415; uint8_t n1432; uint8_t n1433; uint8_t n1448; uint8_t n1449; uint8_t n1464; uint8_t n1465; uint8_t n1482; uint8_t n1483; uint8_t n1498; uint8_t n1514; uint8_t n1532; uint8_t n1548; uint8_t n1564; uint8_t n1582; uint8_t n1598; uint8_t n1614; uint8_t n1632; uint8_t n1633; uint8_t n1648; uint8_t n1649; uint8_t n1664; uint8_t n1665; uint8_t n1682; uint8_t n1683; uint8_t n1698; uint8_t n1699; uint8_t n1714; uint8_t n1715; uint8_t n1732; uint8_t n1733; uint8_t n1748; uint8_t n1749; uint8_t n1764; uint8_t n1782; uint8_t n1798; uint8_t n1814; uint8_t n1832; uint8_t n1848; uint8_t n1864; uint8_t n1882; uint8_t n1898; uint8_t n1899; uint8_t n1914; uint8_t n1915; uint8_t n1932; uint8_t n1933; uint8_t n1948; uint8_t n1949; uint8_t n1964; uint8_t n1965; uint8_t n1982; uint8_t n1983; uint8_t n1998; uint8_t n1999; uint8_t n2014; uint8_t n2015; n32 = n0 & n16; n47 = n6 & n26; n49 = n2 & n16; n51 = n30 & n24; n54 = n51 | n16; n55 = n51 | n16; n62 = ~((n47 & n8) | n55); n65 = n4 & n54; n70 = n8 & n4; n73 = n62 & n47; n81 = n73 | n70; n82 = n6 & n16; n98 = n8 & n16; n114 = n10 & n16; n132 = n12 & n16; n137 = n65; n148 = n14 & n16; n164 = n0 & n18; n169 = n49; n183 = ~(n137 & n18 & n81); n198 = n4 & n18; n214 = n6 & n18; n232 = n8 & n18; n248 = n10 & n18; n264 = n12 & n18; n282 = n14 & n18; n298 = n169 ^ n164; n299 = n169 & n164; n314 = (n137 ^ n98) ^ n299; n315 = (n137 & n98) | (n98 & n299) | (n137 & n299); n332 = (n82 ^ n198) ^ n315; n333 = (n82 & n198) | (n198 & n315) | (n82 & n315); n348 = (n98 ^ n214) ^ n333; n349 = (n98 & n214) | (n214 & n333) | (n98 & n333); n364 = (n114 ^ n232) ^ n349; n365 = (n114 & n232) | (n232 & n349) | (n114 & n349); n382 = (n132 ^ n248) ^ n365; n383 = (n132 & n248) | (n248 & n365) | (n132 & n365); n398 = (n148 ^ n264) ^ n383; n399 = (n148 & n264) | (n264 & n383) | (n148 & n383); n414 = n399 ^ n282; n415 = n399 & n282; n432 = n0 & n20; n448 = n2 & n20; n464 = n4 & n20; n482 = n6 & n20; n498 = n8 & n20; n514 = n10 & n20; n532 = n12 & n20; n548 = n14 & n20; n564 = (n183 & n432) | (~n183 & n314); n582 = n332 ^ n448; n598 = n348 | n464; n614 = n364 ^ n482; n615 = n364 & n482; n632 = (n382 ^ n498) ^ n615; n633 = (n382 & n498) | (n498 & n615) | (n382 & n615); n648 = (n398 ^ n514) ^ n633; n649 = (n398 & n514) | (n514 & n633) | (n398 & n633); n664 = (n414 ^ n532) ^ n649; n665 = (n414 & n532) | (n532 & n649) | (n414 & n649); n682 = (n415 ^ n548) ^ n665; n683 = (n415 & n548) | (n548 & n665) | (n415 & n665); n698 = n0 & n22; n714 = n2 & n22; n732 = n4 & n22; n748 = n6 & n22; n764 = n8 & n22; n782 = n10 & n22; n798 = n12 & n22; n814 = n14 & n22; n832 = n582 ^ n698; n833 = n582 & n698; n848 = (n598 ^ n714) ^ n833; n849 = (n598 & n714) | (n714 & n833) | (n598 & n833); n864 = (n614 ^ n732) ^ n849; n865 = (n614 & n732) | (n732 & n849) | (n614 & n849); n882 = (n632 ^ n748) ^ n865; n883 = (n632 & n748) | (n748 & n865) | (n632 & n865); n898 = (n648 ^ n764) ^ n883; n899 = (n648 & n764) | (n764 & n883) | (n648 & n883); n914 = (n664 ^ n782) ^ n899; n915 = (n664 & n782) | (n782 & n899) | (n664 & n899); n932 = (n682 ^ n798) ^ n915; n933 = (n682 & n798) | (n798 & n915) | (n682 & n915); n948 = (n683 ^ n814) ^ n933; n949 = (n683 & n814) | (n814 & n933) | (n683 & n933); n964 = n0 & n24; n982 = n2 & n24; n998 = n4 & n24; n1014 = n6 & n24; n1032 = n8 & n24; n1048 = n10 & n24; n1064 = n12 & n24; n1082 = n14 & n24; n1098 = n848 ^ n964; n1099 = n848 & n964; n1114 = (n864 ^ n982) ^ n1099; n1115 = (n864 & n982) | (n982 & n1099) | (n864 & n1099); n1132 = (n882 ^ n998) ^ n1115; n1133 = (n882 & n998) | (n998 & n1115) | (n882 & n1115); n1148 = (n898 ^ n1014) ^ n1133; n1149 = (n898 & n1014) | (n1014 & n1133) | (n898 & n1133); n1164 = (n914 ^ n1032) ^ n1149; n1165 = (n914 & n1032) | (n1032 & n1149) | (n914 & n1149); n1182 = (n932 ^ n1048) ^ n1165; n1183 = (n932 & n1048) | (n1048 & n1165) | (n932 & n1165); n1198 = (n948 ^ n1064) ^ n1183; n1199 = (n948 & n1064) | (n1064 & n1183) | (n948 & n1183); n1214 = (n949 ^ n1082) ^ n1199; n1215 = (n949 & n1082) | (n1082 & n1199) | (n949 & n1199); n1232 = n0 & n26; n1248 = n2 & n26; n1264 = n4 & n26; n1282 = n6 & n26; n1298 = n8 & n26; n1314 = n10 & n26; n1332 = n12 & n26; n1348 = n14 & n26; n1364 = n1114 ^ n1232; n1365 = n1114 & n1232; n1382 = (n1132 ^ n1248) ^ n1365; n1383 = (n1132 & n1248) | (n1248 & n1365) | (n1132 & n1365); n1398 = (n1148 ^ n1264) ^ n1383; n1399 = (n1148 & n1264) | (n1264 & n1383) | (n1148 & n1383); n1414 = (n1164 ^ n1282) ^ n1399; n1415 = (n1164 & n1282) | (n1282 & n1399) | (n1164 & n1399); n1432 = (n1182 ^ n1298) ^ n1415; n1433 = (n1182 & n1298) | (n1298 & n1415) | (n1182 & n1415); n1448 = (n1198 ^ n1314) ^ n1433; n1449 = (n1198 & n1314) | (n1314 & n1433) | (n1198 & n1433); n1464 = (n1214 ^ n1332) ^ n1449; n1465 = (n1214 & n1332) | (n1332 & n1449) | (n1214 & n1449); n1482 = (n1215 ^ n1348) ^ n1465; n1483 = (n1215 & n1348) | (n1348 & n1465) | (n1215 & n1465); n1498 = n0 & n28; n1514 = n2 & n28; n1532 = n4 & n28; n1548 = n6 & n28; n1564 = n8 & n28; n1582 = n10 & n28; n1598 = n12 & n28; n1614 = n14 & n28; n1632 = n1382 ^ n1498; n1633 = n1382 & n1498; n1648 = (n1398 ^ n1514) ^ n1633; n1649 = (n1398 & n1514) | (n1514 & n1633) | (n1398 & n1633); n1664 = (n1414 ^ n1532) ^ n1649; n1665 = (n1414 & n1532) | (n1532 & n1649) | (n1414 & n1649); n1682 = (n1432 ^ n1548) ^ n1665; n1683 = (n1432 & n1548) | (n1548 & n1665) | (n1432 & n1665); n1698 = (n1448 ^ n1564) ^ n1683; n1699 = (n1448 & n1564) | (n1564 & n1683) | (n1448 & n1683); n1714 = (n1464 ^ n1582) ^ n1699; n1715 = (n1464 & n1582) | (n1582 & n1699) | (n1464 & n1699); n1732 = (n1482 ^ n1598) ^ n1715; n1733 = (n1482 & n1598) | (n1598 & n1715) | (n1482 & n1715); n1748 = (n1483 ^ n1614) ^ n1733; n1749 = (n1483 & n1614) | (n1614 & n1733) | (n1483 & n1733); n1764 = n0 & n30; n1782 = n2 & n30; n1798 = n4 & n30; n1814 = n6 & n30; n1832 = n8 & n30; n1848 = n10 & n30; n1864 = n12 & n30; n1882 = n14 & n30; n1898 = n1648 ^ n1764; n1899 = n1648 & n1764; n1914 = (n1664 ^ n1782) ^ n1899; n1915 = (n1664 & n1782) | (n1782 & n1899) | (n1664 & n1899); n1932 = (n1682 ^ n1798) ^ n1915; n1933 = (n1682 & n1798) | (n1798 & n1915) | (n1682 & n1915); n1948 = (n1698 ^ n1814) ^ n1933; n1949 = (n1698 & n1814) | (n1814 & n1933) | (n1698 & n1933); n1964 = (n1714 ^ n1832) ^ n1949; n1965 = (n1714 & n1832) | (n1832 & n1949) | (n1714 & n1949); n1982 = (n1732 ^ n1848) ^ n1965; n1983 = (n1732 & n1848) | (n1848 & n1965) | (n1732 & n1965); n1998 = (n1748 ^ n1864) ^ n1983; n1999 = (n1748 & n1864) | (n1864 & n1983) | (n1748 & n1983); n2014 = (n1749 ^ n1882) ^ n1999; n2015 = (n1749 & n1882) | (n1882 & n1999) | (n1749 & n1999); c |= (n32 & 0x1) << 0; c |= (n298 & 0x1) << 1; c |= (n564 & 0x1) << 2; c |= (n832 & 0x1) << 3; c |= (n1098 & 0x1) << 4; c |= (n1364 & 0x1) << 5; c |= (n1632 & 0x1) << 6; c |= (n1898 & 0x1) << 7; c |= (n1914 & 0x1) << 8; c |= (n1932 & 0x1) << 9; c |= (n1948 & 0x1) << 10; c |= (n1964 & 0x1) << 11; c |= (n1982 & 0x1) << 12; c |= (n1998 & 0x1) << 13; c |= (n2014 & 0x1) << 14; c |= (n2015 & 0x1) << 15; return c; }