/*** * 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_381 /// Library = EvoApprox8b /// Circuit = add8_381 /// Area (180) = 1296 /// Delay (180) = 0.940 /// Power (180) = 370.00 /// Area (45) = 91 /// Delay (45) = 0.400 /// Power (45) = 29.40 /// Nodes = 32 /// HD = 188032 /// MAE = 4.79688 /// MSE = 36.87500 /// MRE = 2.54 % /// WCE = 16 /// WCRE = 700 % /// EP = 92.6 % uint16_t add8_381(uint8_t a, uint8_t b) { uint16_t c = 0; 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 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 n43; uint8_t n45; uint8_t n47; uint8_t n48; uint8_t n49; uint8_t n68; uint8_t n71; uint8_t n72; uint8_t n73; uint8_t n78; uint8_t n79; uint8_t n80; uint8_t n86; uint8_t n87; uint8_t n96; uint8_t n97; uint8_t n135; uint8_t n136; uint8_t n143; uint8_t n152; uint8_t n160; uint8_t n162; uint8_t n165; uint8_t n177; uint8_t n180; uint8_t n207; uint8_t n226; uint8_t n245; uint8_t n254; uint8_t n272; uint8_t n344; uint8_t n345; uint8_t n348; uint8_t n377; uint8_t n394; uint8_t n404; uint8_t n412; uint8_t n413; uint8_t n422; n43 = n28 | n12; n45 = n28 | n12; n47 = n26 & n10; n48 = ~(n24 | n8 | n6); n49 = ~(n24 | n8 | n6); n68 = n8 & n24; n71 = n68; n72 = n24 ^ n8; n73 = n24 & n8; n78 = n10 ^ n26; n79 = n10 & n26; n80 = n79; n86 = n12 ^ n28; n87 = n12 & n28; n96 = n14 ^ n30; n97 = n14 & n30; n135 = n26 | n10; n136 = n135; n143 = n87; n152 = n71; n160 = n96; n162 = n43 & n47; n165 = n160; n177 = ~n49; n180 = n143 | n162; n207 = n136; n226 = n207 & n152; n245 = n80 | n226; n254 = n45 & n226; n272 = n180 | n254; n344 = n48 | n72; n345 = n48 | n72; n348 = n272; n377 = n165; n394 = n78 ^ n73; n404 = n86 ^ n245; n412 = n377 ^ n348; n413 = n377 & n348; n422 = n97 | n413; c |= (n344 & 0x1) << 0; c |= (n345 & 0x1) << 1; c |= (n344 & 0x1) << 2; c |= (n22 & 0x1) << 3; c |= (n177 & 0x1) << 4; c |= (n394 & 0x1) << 5; c |= (n404 & 0x1) << 6; c |= (n412 & 0x1) << 7; c |= (n422 & 0x1) << 8; return c; }