forked from pi7mcrg2k/operator_optimization
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49 lines
1.1 KiB
49 lines
1.1 KiB
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#define SIZE 10000000
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void vectorAdd(float* A, float* B, float* C, int size) {
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int i;
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for (i = 0; i < size; ++i) {
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C[i] = A[i] + B[i];
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}
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}
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int main() {
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float* A = (float*)malloc(SIZE * sizeof(float));
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float* B = (float*)malloc(SIZE * sizeof(float));
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float* C = (float*)malloc(SIZE * sizeof(float));
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if (A == NULL || B == NULL || C == NULL) {
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return 1;
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}
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// float A[SIZE], B[SIZE], C[SIZE];
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srand((unsigned)time(NULL));
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int i;
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for (i = 0; i < SIZE; ++i) {
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A[i] = rand() % 100;
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B[i] = rand() % 100;
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}
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clock_t start_time = clock();
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vectorAdd(A, B, C, SIZE);
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clock_t end_time = clock();
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double time = (double)(end_time - start_time) / CLOCKS_PER_SEC;
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printf("%f\n", time);
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// for (i = 0; i < SIZE; ++i) {
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// printf("A[%d] + B[%d] = C[%d] -> %f + %f = %f\n", i, i, i, A[i], B[i], C[i]);
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// }
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free(A);
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free(B);
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free(C);
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return 0;
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}
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