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driver0.c
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driver0.c
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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include "memsets.c"
void check(char* mem, int sz, int val) {
for (int i = 0; i < sz; i++) {
if (*(mem + i) != val) {
printf("Failed at %i (%x)!\n", i, *(mem + i));
break;
}
}
}
int main(int argc, char** argv) {
unsigned int i, e = 1024, sz = 1024 * 1024;
clock_t start, stop;
char* mem = (char*) malloc(sz);
start = clock();
for (i = 0; i < e; i++) {
memset(mem, 61, sz);
}
stop = clock();
printf("Standard memset: %f\n", ((double) stop - start) / CLOCKS_PER_SEC);
check(mem, sz, 61);
memset(mem, 0, sz);
start = clock();
for (i = 0; i < e; i++) {
memset1(mem, 61, sz);
}
stop = clock();
printf("Int memset1: %f\n", ((double) stop - start) / CLOCKS_PER_SEC);
check(mem, sz, 61);
memset(mem, 0, sz);
start = clock();
for (i = 0; i < e; i++) {
memset2(mem, 61, sz);
}
stop = clock();
printf("Int memset2: %f\n", ((double) stop - start) / CLOCKS_PER_SEC);
check(mem, sz, 61);
memset(mem, 0, sz);
start = clock();
for (i = 0; i < e; i++) {
memset_asm(mem, 61, sz);
}
stop = clock();
printf("ASM memset: %f\n", ((double) stop - start) / CLOCKS_PER_SEC);
check(mem, sz, 61);
memset(mem, 0, sz);
start = clock();
for (i = 0; i < e; i++) {
memset_sse(mem, 61, sz);
}
stop = clock();
printf("SSE memset: %f\n", ((double) stop - start) / CLOCKS_PER_SEC);
check(mem, sz, 61);
return 0;
}