ADD file via upload

vector_addition.c

@@ -0,0 +1,60 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <arm_neon.h>
+
+#define SIZE 1024
+
+// 基础向量加法
+void vector_add(float* A, float* B, float* C, int size) {
+    for (int i = 0; i < size; i++) {
+        C[i] = A[i] + B[i];
+    }
+}
+
+// NEON 优化向量加法
+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 vecC = vaddq_f32(vecA, vecB);
+        vst1q_f32(&C[i], vecC);
+    }
+    for (; i < size; i++) { // 处理剩余元素
+        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));
+
+    srand(time(NULL));
+    for (int i = 0; i < SIZE; i++) {
+        A[i] = rand() % 100;
+        B[i] = rand() % 100;
+    }
+
+    clock_t start, end;
+
+    // 基础向量加法
+    start = clock();
+    vector_add(A, B, C, SIZE);
+    end = clock();
+    printf("基础向量加法时间: %f 秒\n", (double)(end - start) / CLOCKS_PER_SEC);
+
+    // NEON 优化向量加法
+    start = clock();
+    vector_add_optimized(A, B, C, SIZE);
+    end = clock();
+    printf("NEON 优化向量加法时间: %f 秒\n", (double)(end - start) / CLOCKS_PER_SEC);
+
+    free(A);
+    free(B);
+    free(C);
+
+    return 0;
+}