From 20dc3e2face664bae9747ce1841109c36038e14a Mon Sep 17 00:00:00 2001
From: pypzov7ui <2137546866@qq.com>
Date: Fri, 29 Nov 2024 11:11:14 +0800
Subject: [PATCH] ADD file via upload

---
 step3.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 step3.c

diff --git a/step3.c b/step3.c
new file mode 100644
index 0000000..fa29d67
--- /dev/null
+++ b/step3.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+
+#define SIZE 1024  
+
+void matmul(float** A, float** B, float** C, int n) {
+    for (int i = 0; i < n; i++) {
+        for (int j = 0; j < n; j++) {
+            C[i][j] = 0;
+            for (int k = 0; k < n; k++) {
+                C[i][j] += A[i][k] * B[k][j];
+            }
+        }
+    }
+}
+
+int main() {
+    float** A = (float**)malloc(SIZE * sizeof(float*));
+    float** B = (float**)malloc(SIZE * sizeof(float*));
+    float** C = (float**)malloc(SIZE * sizeof(float*));
+    for (int i = 0; i < SIZE; i++) {
+        A[i] = (float*)malloc(SIZE * sizeof(float));
+        B[i] = (float*)malloc(SIZE * sizeof(float));
+        C[i] = (float*)malloc(SIZE * sizeof(float));
+    }
+
+    for (int i = 0; i < SIZE; i++) {
+        for (int j = 0; j < SIZE; j++) {
+            A[i][j] = rand() % 100;
+            B[i][j] = rand() % 100;
+        }
+    }
+
+    clock_t start = clock();
+    matmul(A, B, C, SIZE);
+    clock_t end = clock();
+    
+    double time_taken = (double)(end - start) / CLOCKS_PER_SEC;
+    printf("Matrix Multiply Time: %f seconds\n", time_taken);
+
+    for (int i = 0; i < SIZE; i++) {
+        free(A[i]);
+        free(B[i]);
+        free(C[i]);
+    }
+    free(A);
+    free(B);
+    free(C);
+
+    return 0;
+}