/*** * 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 add8_107 /// Library = EvoApprox8b /// Circuit = add8_107 /// Area (180) = 1956 /// Delay (180) = 1.200 /// Power (180) = 655.80 /// Area (45) = 131 /// Delay (45) = 0.510 /// Power (45) = 52.33 /// Nodes = 42 /// HD = 65408 /// MAE = 0.56250 /// MSE = 0.62500 /// MRE = 0.29 % /// WCE = 2 /// WCRE = 100 % /// EP = 53.1 % uint16_t add8_107(uint8_t a, uint8_t b) { uint16_t c = 0; 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 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 n39; uint8_t n40; uint8_t n41; uint8_t n46; uint8_t n50; uint8_t n51; uint8_t n57; uint8_t n58; uint8_t n59; uint8_t n68; uint8_t n69; uint8_t n78; uint8_t n79; uint8_t n86; uint8_t n87; uint8_t n91; uint8_t n96; uint8_t n97; uint8_t n107; uint8_t n124; uint8_t n134; uint8_t n143; uint8_t n150; uint8_t n152; uint8_t n162; uint8_t n175; uint8_t n180; uint8_t n198; uint8_t n199; uint8_t n208; uint8_t n214; uint8_t n224; uint8_t n227; uint8_t n244; uint8_t n272; uint8_t n273; uint8_t n282; uint8_t n293; uint8_t n310; uint8_t n321; uint8_t n328; uint8_t n338; uint8_t n349; uint8_t n366; uint8_t n376; uint8_t n384; uint8_t n394; uint8_t n404; uint8_t n412; uint8_t n413; uint8_t n422; n32 = ~(n14 & n26 & n12); n39 = n22 | n6; n40 = n2 ^ n18; n41 = n2 & n18; n46 = n24 | n8; n50 = n4 ^ n20; n51 = n4 & n20; n57 = n50; n58 = n6 ^ n22; n59 = n6 & n22; n68 = n8 ^ n24; n69 = n8 & n24; n78 = n10 ^ n26; n79 = n10 & n26; n86 = n12 ^ n28; n87 = n12 & n28; n91 = n78; n96 = n14 ^ n30; n97 = n14 & n30; n107 = n50 & n41; n124 = n51 | n107; n134 = n46 & n59; n143 = n68 & n39; n150 = n124; n152 = n69 | n134; n162 = n86 & n79; n175 = n86 & n91; n180 = n87 | n162; n198 = n150; n199 = n150; n208 = n143 & n150; n214 = n152; n224 = n24 ^ n8; n227 = n214 | n208; n244 = n175; n272 = n227; n273 = n227; n282 = n244 & n273; n293 = n180 | n282; n310 = n41; n321 = n58 & n199; n328 = n59 | n321; n338 = n91 & n272; n349 = n79 | n338; n366 = n57 ^ n310; n376 = n58 ^ n198; n384 = n224 ^ n328; n394 = n91 ^ n272; n404 = n86 ^ n349; n412 = n96 ^ n293; n413 = n96 & n293; n422 = n97 | n413; c |= (n32 & 0x1) << 0; c |= (n40 & 0x1) << 1; c |= (n366 & 0x1) << 2; c |= (n376 & 0x1) << 3; c |= (n384 & 0x1) << 4; c |= (n394 & 0x1) << 5; c |= (n404 & 0x1) << 6; c |= (n412 & 0x1) << 7; c |= (n422 & 0x1) << 8; return c; }