Set functions

/**
 * On the server side, these functions should not be used on arguments, but only
 * on convertors (see section 5.5).
 * If mode                                is DIET_PERSISTENCE_MODE_COUNT, 
 * or if base_type                        is DIET_BASE_TYPE_COUNT,
 * or if order                            is DIET_MATRIX_ORDER_COUNT,
 * or if size, nb_rows, nb_cols or length is 0,
 * or if path                             is NULL,
 * then the corresponding field is not modified.
 */

int
diet_scalar_set(diet_arg_t* arg, void* value, diet_persistence_mode_t mode,
                diet_base_type_t base_type);
int
diet_vector_set(diet_arg_t* arg, void* value, diet_persistence_mode_t mode,
                diet_base_type_t base_type, size_t size);

/* Matrices can be stored by rows or by columns */
typedef enum {
  DIET_COL_MAJOR = 0,
  DIET_ROW_MAJOR,
  DIET_MATRIX_ORDER_COUNT
} diet_matrix_order_t;

int
diet_matrix_set(diet_arg_t* arg, void* value, diet_persistence_mode_t mode,
                diet_base_type_t base_type,
                size_t nb_rows, size_t nb_cols, diet_matrix_order_t order);
int
diet_string_set(diet_arg_t* arg, char* value, diet_persistence_mode_t mode);

/* The file size is computed and stocked in a field of arg
   ! Warning ! The path is not duplicated !!! */
int
diet_file_set(diet_arg_t* arg, diet_persistence_mode_t mode, char* path);