C++ read_matrix函数代码示例

int main(void) {
  FILE *fin = fopen( "matrix2.in", "r" );

  if( fin == NULL ) {
    printf( "Error: could not open matrix2.in\n" );
    exit( EXIT_FAILURE );
  }

  Matrix *a = read_matrix( fin );
  Matrix *b = read_matrix( fin );
  fclose( fin );

  Matrix *c = product_matrix( a, b );

  FILE *output = fopen( "matrix2.out", "w" );

  if( output == NULL ) {
    printf( "Error: could not open matrix2.out\n" );
    exit( EXIT_FAILURE );
  }

  print_matrix( output, c );
  fclose( output );

	destroy_matrix( a );
	destroy_matrix( b );
	destroy_matrix( c );

  return 0;
}

void main()
{
	int row1, column1, row2, column2;
	int matrix1[100][100], matrix2[100][100], final_matrix[100][100];
	printf("Enter number of rows and columns of matrix 1\n");
	scanf_s("%d%d", &row1, &column1);
	printf("Enter elements of matrix 1\n");
	read_matrix(row1, column1, matrix1);
	printf("Enter number of rows and columns of matrix 2\n");
	scanf_s("%d%d", &row2, &column2);
	if (column1 != row2)
		printf("Matrices cannot be multiplied \n");
	else
	{
		printf("Enter elements of matrix 2\n");
		read_matrix(row2, column2, matrix2);
	}
	printf("Matrix 1  is as follows \n");
	display_matrix(row1, column1, matrix1);
	printf("Mtrix 2 is as follows \n");
	display_matrix(row2, column2, matrix2);
	multiply_matrix(row1, column1, matrix1, row2, column2, matrix2, final_matrix);
	printf("Resultant Matrix is as follows \n");
	display_matrix(row1, column2, final_matrix);
	getchar();
	getchar();
	getchar();
}

void *read_all()
{
  printf("---!!! READ ALL THREAD START !!!---\n");
  read_matrix(matrixa);
  read_matrix(matrixb);
  printf("---!!! READ ALL THREAD END !!!---\n");
  sem_post(&mutex);
  return 0;
}

// Read binary ROM data for basis functions and coefficients
static int load_data(const char dir[], gsl_vector *cvec_amp, gsl_vector *cvec_phi, gsl_matrix *Bamp, gsl_matrix *Bphi, gsl_vector *cvec_amp_pre) {
  // Load binary data for amplitude and phase spline coefficients as computed in Mathematica
  int ret = XLAL_SUCCESS;
  ret |= read_vector(dir, "SEOBNRv1ROM_SS_Amp_ciall.dat", cvec_amp);
  ret |= read_vector(dir, "SEOBNRv1ROM_SS_Phase_ciall.dat", cvec_phi);
  ret |= read_matrix(dir, "SEOBNRv1ROM_SS_Bamp_bin.dat", Bamp);
  ret |= read_matrix(dir, "SEOBNRv1ROM_SS_Bphase_bin.dat", Bphi);
  ret |= read_vector(dir, "SEOBNRv1ROM_SS_AmpPrefac_ci.dat", cvec_amp_pre);
  return(ret);
}

int main()
{
    int N;
    scanf("%d",&N);
    int *matrix_a = (int *)malloc(N * N * sizeof(int));
    int *matrix_b = (int *)malloc(N * N * sizeof(int));
    int *matrix_c = (int *)malloc(N * N * sizeof(int));
    read_matrix(matrix_a, N);
    read_matrix(matrix_b, N);
    multiply_matrix_3(matrix_a, matrix_b, matrix_c, N);
    display_matrix(matrix_c, N);
}

/** read local problem;
 * return problem on success; NULL on failure */
struct fclib_local* fclib_read_local (const char *path)
{
  struct fclib_local *problem;
  hid_t  file_id, main_id, id;

  if ((file_id = H5Fopen (path, H5F_ACC_RDONLY, H5P_DEFAULT)) < 0)
  {
    fprintf (stderr, "ERROR: opening file failed\n");
    return NULL;
  }

  if (!H5Lexists (file_id, "/fclib_local", H5P_DEFAULT))
  {
    fprintf (stderr, "ERROR: spurious input file %s :: fclib_local group does not exists", path);
    return NULL;
  }

  MM (problem = calloc (1, sizeof (struct fclib_local)));

  IO (main_id = H5Gopen (file_id, "/fclib_local", H5P_DEFAULT));
  IO (H5LTread_dataset_int (file_id, "/fclib_local/spacedim", &problem->spacedim));

  IO (id = H5Gopen (file_id, "/fclib_local/W", H5P_DEFAULT));
  problem->W = read_matrix (id);
  IO (H5Gclose (id));

  if (H5Lexists (file_id, "/fclib_local/V", H5P_DEFAULT))
  {
    IO (id = H5Gopen (file_id, "/fclib_local/V", H5P_DEFAULT));
    problem->V = read_matrix (id);
    IO (H5Gclose (id));

    IO (id = H5Gopen (file_id, "/fclib_local/R", H5P_DEFAULT));
    problem->R = read_matrix (id);
    IO (H5Gclose (id));
  }

  IO (id = H5Gopen (file_id, "/fclib_local/vectors", H5P_DEFAULT));
  read_local_vectors (id, problem);
  IO (H5Gclose (id));

  if (H5Lexists (file_id, "/fclib_local/info", H5P_DEFAULT))
  {
    IO (id = H5Gopen (file_id, "/fclib_local/info", H5P_DEFAULT));
    problem->info = read_problem_info (id);
    IO (H5Gclose (id));
  }

  IO (H5Gclose (main_id));
  IO (H5Fclose (file_id));

  return problem;
}

int main(void) {
  matrix a,b,c;
  printf("enter first matrix\n");
  read_matrix(&a);
  print_matrix(&a);
  printf("enter second matrix\n");
  read_matrix(&b);
  print_matrix(&b);
  printf("matrix product\n");
  multiply(&a, &b, &c);
  print_matrix(&c);
  return 0;
}

int main(int argc, char ** argv){
    matrix * matrix_a;
    matrix * matrix_b;
    int thread_count = 0;
    //  if(argc != 7){
    //      fprintf(stderr, "%s", "Not enough arguments");
    //      exit(-1);
    //  }
    for(int i = 1; i < argc; i ++){
        if(strcmp(argv[i],"-a") == 0){
            matrix_a = read_matrix(argv[i+1]);
        }
        if(strcmp(argv[i],"-b") == 0){
            matrix_b = read_matrix(argv[i+1]);
        }
        if(strcmp(argv[i],"-t") == 0){
            thread_count = atoi(argv[i+1]);
        }
    }
    if(matrix_a->cols != matrix_b->rows){
        fprintf(stderr, "%s", "a and b not computable");
        exit(-1);
    }
    printf("Read ready, start computing");

    
    pthread_t thread_id;
    int err;
    in_arg * arg = (in_arg *)malloc(sizeof(in_arg));
    out_arg * result = (out_arg *)malloc(sizeof(out_arg));
    arg->a = matrix_a;
    arg->b = matrix_b;
    arg->from_row = 0;
    arg->to_row = matrix_a->rows - 1;
       err = pthread_create(&thread_id, NULL, compute_thread, (void*)arg);
    
    err = pthread_join(thread_id, (void**)result);
//    double * result_matrix = (double *)malloc(matrix_a->rows * matrix_b->cols * sizeof(double));
//    for(int i = 0 ; i < matrix_a->rows; i++){
//        double *one_strip = compute_strip(matrix_a,matrix_b,i);
//        for(int j = 0 ; j < matrix_a->cols; j++){
//            result_matrix[i * matrix_b->cols + j] = one_strip[j];
//        }
//        free(one_strip);
//    }
    for(int i = 0 ; i < matrix_a->rows * matrix_b->cols; i ++){
        printf("%f ",result->result[i]);
        if(i % matrix_b->cols == matrix_b->cols-1)
            printf("\n");
    }
}

void Call_Inverse( int n)
{
  POLY ds;
  POLY M1[n][n], t_M1[n][n], product[n][n];
  int k; 

  printf("Please choose the test matrix:  "); 
  printf("1 random matrix.\n");
  printf("2 input your own matrix.\n");
  scanf("%d", &k ); printf("%d\n", k);

  if(k==1) random_matrix ( n, n, M1);
  if(k==2) read_matrix( n, n, M1 );
  printf("the original matrix generated :\n");
  print( n, n, M1);

  copy(n, n, M1, t_M1);
  ds = Inverse_Poly ( n, M1 );
  printf(" The inverse matrix of the matrix is :\n" );
  print(n, n, M1 );
  printf(" The polynomial ds is :\n" );
  Print_Poly( ds.d, ds.p );

  printf("The product (without ds) of the original matrix");
  printf(" and the inverse matrix is:\n");
 
  Multiply(n, n, n, M1, t_M1, product);
  print(n, n, product);
  
  free_matrix(n, n, M1);
  free_matrix(n, n, t_M1);
  free_matrix(n, n, product);
 
}

main ()
{
int n;
	MATRIX (A, MAX*MAX, MAX, MAX)

	read_matrix (A);

	if (DIM(A,0) != DIM(A,1))
	{
		printf ("La matrice doit etre carree\n");
		return;
	}
	n = DIM(A,0);

	MATRIX (B, MAX*MAX, n, n)

	printf ("Inversion de la matrice : ");
	print_matrix (A);

	pivot (A, B);

	printf ("Matrice inverse : ");
	print_matrix (B);

	ENDMAT ENDMAT
}

bool SimGPS::OnStartUp()
{
  list<string> sParams;
  m_MissionReader.EnableVerbatimQuoting(false);
  if(m_MissionReader.GetConfiguration(GetAppName(), sParams)) {
    list<string>::iterator p;
    for(p=sParams.begin(); p!=sParams.end(); p++) {
      string original_line = *p;
      string param = stripBlankEnds(toupper(biteString(*p, '=')));
      string value = stripBlankEnds(*p);
      
      if(param == "GPS_COVARIANCE") {
        GPS_covariance = read_matrix(value);
      }
      if(param == "MAX_DEPTH"){
	max_depth = atof(value.c_str());
      }
      if(param == "ADD_NOISE"){
	add_noise = (tolower(value) == "true");
      }
      if(param == "BACKGROUND_MODE"){
	if (tolower(value) == "true")
	  in_prefix = "NAV";
	else
	  in_prefix = "SIM";
      }
    }
  }
  
  distribution = normal_distribution<double>(0.0,sqrt(GPS_covariance(0,0)));

  RegisterVariables();	
  return(true);
}

int main(int argc, char *argv[])
{
	double* matA = _mm_malloc(WIDTH*HEIGHT*sizeof(double), 64);
	double* matB = _mm_malloc((WIDTH*HEIGHT)*sizeof(double), 64);
	double* prod = _mm_malloc(WIDTH*HEIGHT*sizeof(double), 64);
	double* prod_ref = _mm_malloc(WIDTH*HEIGHT*sizeof(double), 64);

	int read_flag = read_matrix(TEST_FILENAME, prod_ref, matA, matB);
	if (read_flag == 1)
		printf("Cannot open test file\n");
	else if (read_flag == 2)
		printf("Error while reading data from test file");
	else if (read_flag == 3)
		printf("Error while closing the test file");
	if (read_flag)
		return 0;

	uint64_t start = timestamp_us();
	matmul_optimize(prod, matA, matB); /* run the optimization functions. */
	uint64_t time = timestamp_us() - start;

	if (compare_matrix(prod, prod_ref)) {
		printf("%lu incorrect\n", time);
	} else {
		printf("%lu\n", time);
	}
	_mm_free(prod_ref);
	_mm_free(prod);
	_mm_free(matB);
	_mm_free(matA);
	return 0;
}

int main () {

	// read two N x N matrices

	read_matrix (X);
	read_matrix (Y);

	// multiply the matrices 

	matrix_multiply (X, Y, Z);

	// output the resulting matrix

	print_matrix (Z);
	return 0;
}

/* <pattern> <matrix> <shading> .buildshadingpattern <pattern> <instance> */
static int
zbuildshadingpattern(i_ctx_t *i_ctx_p)
{
    os_ptr op = osp;
    os_ptr op2 = op - 2;
    gs_matrix mat;
    gs_pattern2_template_t templat;
    int_pattern *pdata;
    gs_client_color cc_instance;
    int code;

    check_type(*op2, t_dictionary);
    check_dict_read(*op2);
    gs_pattern2_init(&templat);
    if ((code = read_matrix(imemory, op - 1, &mat)) < 0 ||
        (code = dict_uid_param(op2, &templat.uid, 1, imemory, i_ctx_p)) != 1 ||
        (code = shading_param(op, &templat.Shading)) < 0 ||
        (code = int_pattern_alloc(&pdata, op2, imemory)) < 0
        )
        return_error((code < 0 ? code : gs_error_rangecheck));
    templat.client_data = pdata;
    code = gs_make_pattern(&cc_instance,
                           (const gs_pattern_template_t *)&templat,
                           &mat, igs, imemory);
    if (code < 0) {
        ifree_object(pdata, "int_pattern");
        return code;
    }
    make_istruct(op - 1, a_readonly, cc_instance.pattern);
    pop(1);
    return code;
}

int get_proxy(char * proxypath,char sep){
  /* int i=8; */
  /* fprintf(stderr,"in mcmc AS[%d]=%d\n",i,23); */
  int ff;
  char fff[20];
  int midx = 0;
  fprintf(stderr,"MODE in sir %d\n",MODE);
  ADJL = (double ***)calloc((lastPROXY-firstPROXY+1), sizeof(double**));
  for (ff = firstPROXY; ff <= lastPROXY; ff++){
    /* fprintf(stderr,"proxy numero %d\n",ff); */
    char * file = (char *)calloc(1000,sizeof(char));
    file = strcat(file,proxypath);
    /* fprintf(stderr,"proxy file %s\n",file); */
    if((MODE == 2)||(MODE==3))
      file = strcat(file,"/Adj_");
    if((MODE == 0)||(MODE==1))
      file = strcat(file,"/Adj_");
    sprintf(fff,"%d",ff);
    //if((MODE == 2)||(MODE==3)){
    //sprintf(fff,"%d",0); //// PRENDOLASOMMATOTALE!!! 0
    //  sprintf(fff,"%s","0binary"); //// PRENDOLASOMMATOTALE BINARIZZATA!!! 0binary
    //}
    file = strcat(file,fff);
    /* fprintf(stderr,"proxy file %s\n",file); */
    ADJL[midx] = (double **) calloc ((N+1), sizeof(double*));
    read_matrix(ADJL[midx], file, midx, sep);
    midx++;
    /* fprintf(stderr,"proxy dopo numero %d\n",midx); */
    free(file);
  }
  return 0;
}