void fann_save_train_internal_fd(struct fann_train_data * data, FILE * file, char * filename, unsigned int save_as_fixed, unsigned int decimal_point);
Saves the data in data to file. save_as_fixed is either TRUE or FALSE. decimal_point tells FANN where the decimal point may be if using fixed point math.
filename is used for debugging output only.
This function appears in FANN >= 1.1.0.