From 79294d3dbd7941913a38198d5c259bcd7bbb0c7c Mon Sep 17 00:00:00 2001
From: pypzov7ui <2137546866@qq.com>
Date: Fri, 29 Nov 2024 11:11:03 +0800
Subject: [PATCH] ADD file via upload

---
 step2.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 step2.c

diff --git a/step2.c b/step2.c
new file mode 100644
index 0000000..a8610d1
--- /dev/null
+++ b/step2.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <time.h>
+#include <arm_neon.h>
+#include <stdlib.h>
+
+#define SIZE 1024  
+
+void vector_add_optimized(float* A, float* B, float* C, int size) {
+    int i = 0;
+    for (; i <= size - 4; i += 4) {
+        float32x4_t vecA = vld1q_f32(&A[i]);
+        float32x4_t vecB = vld1q_f32(&B[i]);
+        float32x4_t result = vaddq_f32(vecA, vecB);
+        vst1q_f32(&C[i], result);
+    }
+
+    for (; i < size; i++) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+int main() {
+    float A[SIZE], B[SIZE], C[SIZE];
+    
+    for (int i = 0; i < SIZE; i++) {
+        A[i] = rand() % 100;
+        B[i] = rand() % 100;
+    }
+
+    clock_t start = clock();
+    vector_add_optimized(A, B, C, SIZE);
+    clock_t end = clock();
+    
+    double time_taken = (double)(end - start) / CLOCKS_PER_SEC;
+    printf("NEON 优化的向量加法: %f seconds\n", time_taken);
+
+    return 0;
+}