/*** * 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_160 /// Library = EvoApprox8b /// Circuit = add8_160 /// Area (180) = 1384 /// Delay (180) = 0.850 /// Power (180) = 393.80 /// Area (45) = 98 /// Delay (45) = 0.360 /// Power (45) = 31.00 /// Nodes = 35 /// HD = 183424 /// MAE = 4.01562 /// MSE = 27.50000 /// MRE = 2.15 % /// WCE = 15 /// WCRE = 600 % /// EP = 91.0 % uint16_t add8_160(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 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 n43; uint8_t n45; uint8_t n46; uint8_t n49; uint8_t n54; uint8_t n69; uint8_t n70; uint8_t n72; uint8_t n73; uint8_t n78; uint8_t n79; uint8_t n81; uint8_t n86; uint8_t n87; uint8_t n96; uint8_t n97; uint8_t n104; uint8_t n135; uint8_t n136; uint8_t n137; uint8_t n143; uint8_t n152; uint8_t n153; uint8_t n160; uint8_t n163; uint8_t n165; uint8_t n171; uint8_t n177; uint8_t n181; uint8_t n206; uint8_t n226; uint8_t n245; uint8_t n254; uint8_t n272; uint8_t n344; uint8_t n345; uint8_t n349; uint8_t n377; uint8_t n394; uint8_t n404; uint8_t n412; uint8_t n413; uint8_t n422; n43 = n28 | n12; n45 = n28 | n12; n46 = n26 & n10; n49 = ~(n24 | n8 | n6); n54 = ~n6; n69 = n8 & n24; n70 = n69; n72 = n24 ^ n8; n73 = n24 & n8; n78 = n10 ^ n26; n79 = n10 & n26; n81 = n79; n86 = n12 ^ n28; n87 = n12 & n28; n96 = n14 ^ n30; n97 = n14 & n30; n104 = n70 & n54; n135 = n26 | n10; n136 = n135; n137 = n135; n143 = n87; n152 = n70; n153 = n70; n160 = n96; n163 = n43 & n46; n165 = n160; n171 = n45 & n136; n177 = ~(n49 | n104); n181 = n143 | n163; n206 = n137; n226 = n206 & n152; n245 = n81 | n226; n254 = n171 & n153; n272 = n181 | n254; n344 = n54 | n72; n345 = n54 | n72; n349 = n272; n377 = n165; n394 = n78 ^ n73; n404 = n86 ^ n245; n412 = n377 ^ n349; n413 = n377 & n349; n422 = n97 | n413; c |= (n20 & 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; }