ADD file via upload

step2.c

@@ -0,0 +1,64 @@
+#include <arm_neon.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+#define SIZE 1024
+void vector_add(float* A, float* B, float* C, int size) {
+    for (int i = 0; i < size; ++i) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+void vector_add_optimized(float* A, float* B, float* C, int size) {
+    int i;
+    for (i = 0; i < size; i += 4) {
+    
+        float32x4_t a = vld1q_f32(A + i);
+        float32x4_t b = vld1q_f32(B + i);
+        float32x4_t c = vaddq_f32(a, b);
+        vst1q_f32(C + i, c);
+    }
+    
+    for (; i < size; ++i) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+int main() {
+
+    float *A = (float*)malloc(SIZE * sizeof(float));
+    float *B = (float*)malloc(SIZE * sizeof(float));
+    float *C = (float*)malloc(SIZE * sizeof(float));
+    float *C_optimized = (float*)malloc(SIZE * sizeof(float));
+
+    
+    for (int i = 0; i < SIZE; ++i) {
+        A[i] = rand() % 100;
+        B[i] = rand() % 100;
+    }
+
+    
+    clock_t start = clock();
+    vector_add(A, B, C, SIZE);
+    clock_t end = clock();
+    double base_time = (double)(end - start) / CLOCKS_PER_SEC;
+
+
+    start = clock();
+    vector_add_optimized(A, B, C_optimized, SIZE);
+    end = clock();
+    double optimized_time = (double)(end - start) / CLOCKS_PER_SEC;
+
+
+    printf("base: %f s\n", base_time);
+    printf("NEON: %f s\n", optimized_time);
+
+    
+    free(A);
+    free(B);
+    free(C);
+    free(C_optimized);
+
+    return 0;
+}