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 +#include +#include + +#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; +}