From b80e19fef5298ae2cc6f82e8fc368dbbbf7d6e79 Mon Sep 17 00:00:00 2001
From: pqzbgempc <2193876517@qq.com>
Date: Sat, 30 Nov 2024 00:55:41 +0800
Subject: [PATCH] ADD file via upload

---
 NENO2.cpp | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 NENO2.cpp

diff --git a/NENO2.cpp b/NENO2.cpp
new file mode 100644
index 0000000..17c8519
--- /dev/null
+++ b/NENO2.cpp
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#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 C_vec = vaddq_f32(A_vec, B_vec);
+        
+        vst1q_f32(C + i, C_vec);
+    }
+    
+    for (; i < size; i++) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+int main() {
+    float A[SIZE], B[SIZE], C[SIZE];
+    srand(time(NULL)); 
+
+   
+    for (int i = 0; i < SIZE; i++) {
+        A[i] = rand() % 100;
+        B[i] = rand() % 100;
+    }
+
+    
+    clock_t start, end;
+    start = clock(); 
+
+   
+    vector_add_optimized(A, B, C, SIZE);
+
+    end = clock(); 
+    double time_spent = (double)(end - start) / CLOCKS_PER_SEC; 
+
+    printf("NEON优化向量加法的运行时间为: %lf 秒\n", time_spent);
+
+    return 0;
+}