/*** * 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_063 /// Library = EvoApprox8b /// Circuit = add8_063 /// Area (180) = 1040 /// Delay (180) = 0.780 /// Power (180) = 271.00 /// Area (45) = 69 /// Delay (45) = 0.330 /// Power (45) = 22.14 /// Nodes = 22 /// HD = 188544 /// MAE = 4.03125 /// MSE = 28.50000 /// MRE = 2.12 % /// WCE = 15 /// WCRE = 500 % /// EP = 90.6 % uint16_t add8_063(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 n36; uint8_t n44; uint8_t n50; uint8_t n68; uint8_t n69; uint8_t n71; uint8_t n78; uint8_t n79; uint8_t n80; uint8_t n81; uint8_t n86; uint8_t n87; uint8_t n96; uint8_t n97; uint8_t n131; uint8_t n134; uint8_t n137; uint8_t n162; uint8_t n180; uint8_t n226; uint8_t n245; uint8_t n254; uint8_t n273; uint8_t n394; uint8_t n404; uint8_t n412; uint8_t n413; uint8_t n423; n36 = n30 ^ n30; n44 = n28 | n12; n50 = n22 | n6; n68 = n8 ^ n24; n69 = n8 & n24; n71 = n69; n78 = n10 ^ n26; n79 = n10 & n26; n80 = ~n36; n81 = ~n36; n86 = n12 ^ n28; n87 = n12 & n28; n96 = n14 ^ n30; n97 = n14 & n30; n131 = n10 & n26; n134 = ~(n26 | n10); n137 = ~n134; n162 = n44 & n131; n180 = n87 | n162; n226 = n137 & n71; n245 = n79 | n226; n254 = n44 & n226; n273 = n180 | n254; n394 = n78 ^ n71; n404 = n86 ^ n245; n412 = n96 ^ n273; n413 = n96 & n273; n423 = n97 | n413; c |= (n81 & 0x1) << 0; c |= (n20 & 0x1) << 1; c |= (n80 & 0x1) << 2; c |= (n50 & 0x1) << 3; c |= (n68 & 0x1) << 4; c |= (n394 & 0x1) << 5; c |= (n404 & 0x1) << 6; c |= (n412 & 0x1) << 7; c |= (n423 & 0x1) << 8; return c; }