Jan Potocki
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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// Dlugosc tablic (powinna byc podzielna przez 4)
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#define tab_length 60
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unsigned long rdtsc();
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void suma_c(int tab1[], int tab2[], int wynik[], long int length);
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void suma_sse(int tab1[], int tab2[], int wynik[], long int length);
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int main()
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{
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int tab1[tab_length], tab2[tab_length];
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int wynik_c[tab_length], wynik_sse[tab_length];
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int i;
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unsigned long time_start, time_stop;
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unsigned long time_c, time_sse;
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double acc;
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printf("Liczba elementow w tablicach: %d\n", tab_length);
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// Losowanie danych
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srand(time(NULL));
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for(i = 0; i < tab_length; i++)
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{
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tab1[i] = rand() % 101;
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tab2[i] = rand() % 101;
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}
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// Suma - C
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printf("Sumowanie - C...\t");
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time_start = rdtsc();
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suma_c(tab1, tab2, wynik_c, tab_length);
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time_stop = rdtsc();
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time_c = time_stop - time_start;
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printf("OK\n");
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// Suma - SSE (asembler)
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printf("Sumowanie - SSE...\t");
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time_start = rdtsc();
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suma_sse(tab1, tab2, wynik_sse, tab_length);
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time_stop = rdtsc();
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time_sse = time_stop - time_start;
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printf("OK\n");
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acc = (double)time_c / (double)time_sse;
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// Wyswietlenie wynikow
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if(tab_length <= 60)
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{
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// Zawartosc tablic - do kontroli, jezeli sa krotkie
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printf("\n\t\tC\tSSE\n");
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for(i = 0; i < tab_length; i++)
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{
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printf("%d+%d\t=\t%d\t%d\n", tab1[i], tab2[i], wynik_c[i], wynik_sse[i]);
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}
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}
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printf("\nCzas sumowania (TSC) - C:\t%lu\n", time_c);
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printf("Czas sumowania (TSC) - SSE:\t%lu\n", time_sse);
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printf("%fx szybciej\n", acc);
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return 0;
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}
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void suma_c(int tab1[], int tab2[], int wynik[], long int length)
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{
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int i;
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for(i = 0; i < length; i++)
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{
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wynik[i] = tab1[i] + tab2[i];
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}
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}
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