Add 2

2

@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctime>
+
+#include <arm_neon.h>
+
+
+#define SIZE 1024
+
+
+void vector_add_optimized(float* A, float* B, float* C, int size) {
+    int i;
+    for (i = 0; i < size - 3; i += 4) {
+        
+        float32x4_t a_vec = vld1q_f32(&A[i]);
+        float32x4_t b_vec = vld1q_f32(&B[i]);
+
+
+        float32x4_t result_vec = vaddq_f32(a_vec, b_vec);
+
+
+        vst1q_f32(&C[i], result_vec);
+    }
+
+
+    for (; i < size; i++) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+int main() {
+
+    float A[SIZE];
+    float B[SIZE];
+    float C[SIZE];
+
+
+    for (int i = 0; i < SIZE; i++) {
+        A[i] = (float)(rand() % 100);
+        B[i] = (float)(rand() % 100);
+    }
+
+    clock_t start_time, end_time;
+
+    start_time = clock();
+
+
+    vector_add_optimized(A, B, C, SIZE);
+
+
+    end_time = clock();
+
+
+    double elapsed_time = ((double)(end_time - start_time)) / CLOCKS_PER_SEC;
+    printf("NEON优化向量加法的运行时间：%f 秒\n", elapsed_time);
+
+    return 0;
+}