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add8_188.c
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add8_188.c
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/***
* 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 <stdint.h>
#include <stdlib.h>
/// Approximate function add8_188
/// Library = EvoApprox8b
/// Circuit = add8_188
/// Area (180) = 876
/// Delay (180) = 1.580
/// Power (180) = 221.80
/// Area (45) = 64
/// Delay (45) = 0.580
/// Power (45) = 21.78
/// Nodes = 14
/// HD = 140544
/// MAE = 1.73438
/// MSE = 6.17188
/// MRE = 0.89 %
/// WCE = 7
/// WCRE = 100 %
/// EP = 71.7 %
uint16_t add8_188(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 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 n33;
uint8_t n35;
uint8_t n40;
uint8_t n66;
uint8_t n75;
uint8_t n82;
uint8_t n84;
uint8_t n85;
uint8_t n127;
uint8_t n132;
uint8_t n182;
uint8_t n183;
uint8_t n232;
uint8_t n233;
uint8_t n282;
uint8_t n283;
uint8_t n332;
uint8_t n333;
uint8_t n382;
uint8_t n383;
n33 = ~(n20 & n4 & n16);
n35 = ~n33;
n40 = ~(n28 | n30 | n12);
n66 = n40 & n35;
n75 = n66;
n82 = n2 | n18;
n84 = n75;
n85 = n75;
n127 = ~n85;
n132 = n4 | n20;
n182 = (n6 ^ n22) ^ n84;
n183 = (n6 & n22) | (n22 & n84) | (n6 & n84);
n232 = (n8 ^ n24) ^ n183;
n233 = (n8 & n24) | (n24 & n183) | (n8 & n183);
n282 = (n10 ^ n26) ^ n233;
n283 = (n10 & n26) | (n26 & n233) | (n10 & n233);
n332 = (n12 ^ n28) ^ n283;
n333 = (n12 & n28) | (n28 & n283) | (n12 & n283);
n382 = (n14 ^ n30) ^ n333;
n383 = (n14 & n30) | (n30 & n333) | (n14 & n333);
c |= (n127 & 0x1) << 0;
c |= (n82 & 0x1) << 1;
c |= (n132 & 0x1) << 2;
c |= (n182 & 0x1) << 3;
c |= (n232 & 0x1) << 4;
c |= (n282 & 0x1) << 5;
c |= (n332 & 0x1) << 6;
c |= (n382 & 0x1) << 7;
c |= (n383 & 0x1) << 8;
return c;
}