mirror of
https://github.com/ehw-fit/ariths-gen.git
synced 2025-04-23 15:21:22 +01:00
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
#include <stdio.h>
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#include <stdint.h>
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uint64_t s_rca2(int64_t a, int64_t b){
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uint8_t out = 0;
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uint8_t s_rca2_ha_a = 0;
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uint8_t s_rca2_ha_b = 0;
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uint8_t s_rca2_ha_y0 = 0;
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uint8_t s_rca2_ha_y1 = 0;
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uint8_t s_rca2_fa1_a = 0;
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uint8_t s_rca2_fa1_b = 0;
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uint8_t s_rca2_fa1_y0 = 0;
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uint8_t s_rca2_fa1_y1 = 0;
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uint8_t s_rca2_fa1_s_rca2_ha_y1 = 0;
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uint8_t s_rca2_fa1_y2 = 0;
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uint8_t s_rca2_fa1_y3 = 0;
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uint8_t s_rca2_fa1_y4 = 0;
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uint8_t s_rca2_xor_1_a = 0;
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uint8_t s_rca2_xor_1_b = 0;
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uint8_t s_rca2_xor_1_y0 = 0;
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uint8_t s_rca2_xor_2_s_rca2_xor_1_y0 = 0;
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uint8_t s_rca2_xor_2_s_rca2_fa1_y4 = 0;
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uint8_t s_rca2_xor_2_y0 = 0;
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s_rca2_ha_a = ((a >> 0) & 0x01);
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s_rca2_ha_b = ((b >> 0) & 0x01);
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s_rca2_ha_y0 = s_rca2_ha_a ^ s_rca2_ha_b;
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s_rca2_ha_y1 = s_rca2_ha_a & s_rca2_ha_b;
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s_rca2_fa1_a = ((a >> 1) & 0x01);
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s_rca2_fa1_b = ((b >> 1) & 0x01);
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s_rca2_fa1_s_rca2_ha_y1 = ((s_rca2_ha_y1 >> 0) & 0x01);
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s_rca2_fa1_y0 = s_rca2_fa1_a ^ s_rca2_fa1_b;
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s_rca2_fa1_y1 = s_rca2_fa1_a & s_rca2_fa1_b;
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s_rca2_fa1_y2 = s_rca2_fa1_y0 ^ s_rca2_fa1_s_rca2_ha_y1;
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s_rca2_fa1_y3 = s_rca2_fa1_y0 & s_rca2_fa1_s_rca2_ha_y1;
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s_rca2_fa1_y4 = s_rca2_fa1_y1 | s_rca2_fa1_y3;
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s_rca2_xor_1_a = ((a >> 1) & 0x01);
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s_rca2_xor_1_b = ((b >> 1) & 0x01);
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s_rca2_xor_1_y0 = s_rca2_xor_1_a ^ s_rca2_xor_1_b;
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s_rca2_xor_2_s_rca2_xor_1_y0 = ((s_rca2_xor_1_y0 >> 0) & 0x01);
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s_rca2_xor_2_s_rca2_fa1_y4 = ((s_rca2_fa1_y4 >> 0) & 0x01);
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s_rca2_xor_2_y0 = s_rca2_xor_2_s_rca2_xor_1_y0 ^ s_rca2_xor_2_s_rca2_fa1_y4;
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out |= (s_rca2_ha_y0 & 0x01) << 0;
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out |= (s_rca2_fa1_y2 & 0x01) << 1;
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out |= (s_rca2_xor_2_y0 & 0x01) << 2;
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return out;
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}
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#include <assert.h>
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int main(){
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int result = 0;
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for (int i = -2; i < 2; i++){
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for (int j = -2; j < 2; j++){
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result = i + j;
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// Calculating 2's complement in case of negative sum
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if (result < 0) {
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result = 8 + result;
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}
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assert(result == (int)s_rca2(i,j));
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}
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}
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return 0;
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} |