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add8u_5EZ.c
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add8u_5EZ.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 a sub-set of pareto optimal circuits with respect to the pwr and mse parameters
***/
// MAE% = 0.45 %
// MAE = 2.3
// WCE% = 1.37 %
// WCE = 7.0
// WCRE% = 300.00 %
// EP% = 87.50 %
// MRE% = 1.23 %
// MSE = 8.0
// PDK45_PWR = 0.019 mW
// PDK45_AREA = 43.6 um2
// PDK45_DELAY = 0.39 ns
#include <stdint.h>
#include <stdlib.h>
uint16_t add8u_5EZ(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 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 n36;
uint8_t n43;
uint8_t n62;
uint8_t n63;
uint8_t n72;
uint8_t n73;
uint8_t n82;
uint8_t n83;
uint8_t n92;
uint8_t n93;
uint8_t n94;
uint8_t n102;
uint8_t n103;
uint8_t n143;
uint8_t n162;
uint8_t n163;
uint8_t n168;
uint8_t n169;
uint8_t n173;
uint8_t n182;
uint8_t n193;
uint8_t n223;
uint8_t n230;
uint8_t n242;
uint8_t n263;
uint8_t n322;
uint8_t n332;
uint8_t n342;
uint8_t n382;
uint8_t n392;
uint8_t n402;
uint8_t n412;
uint8_t n413;
uint8_t n422;
n32 = n28 ^ n12;
n36 = n24 | n8;
n43 = ~(n2 ^ n2);
n62 = n6 ^ n22;
n63 = n6 & n22;
n72 = n8 ^ n24;
n73 = n8 & n24;
n82 = n10 ^ n26;
n83 = n10 & n26;
n92 = n12 ^ n28;
n93 = n12 & n28;
n94 = n83;
n102 = n14 ^ n30;
n103 = n14 & n30;
n143 = n36 & n63;
n162 = n73 | n143;
n163 = n73 | n143;
n168 = n82;
n169 = n82;
n173 = n32 & n94;
n182 = n32 & n169;
n193 = n93 | n173;
n223 = n182 & n163;
n230 = n162;
n242 = n193 | n223;
n263 = n230;
n322 = n63;
n332 = n168 & n263;
n342 = n94 | n332;
n382 = n72 ^ n322;
n392 = n168 ^ n263;
n402 = n92 ^ n342;
n412 = n102 ^ n242;
n413 = n102 & n242;
n422 = n103 | n413;
c |= (n20 & 0x1) << 0;
c |= (n4 & 0x1) << 1;
c |= (n43 & 0x1) << 2;
c |= (n62 & 0x1) << 3;
c |= (n382 & 0x1) << 4;
c |= (n392 & 0x1) << 5;
c |= (n402 & 0x1) << 6;
c |= (n412 & 0x1) << 7;
c |= (n422 & 0x1) << 8;
return c;
}