prefix_char.i4.v = dio_property_to_prefix_char_c(property.i2.v)

	This routine converts a device property value to its corresponding
	device prefix character.

	property	device property to convert
			(constants are in 'dbprops')
			(PRREAD -> reading property,
			 PRSET -> setting property,
			 PRBSTS -> basic status property,
			 PRBCTL -> basic control property,
			 PRANAB -> analog alarm property,
			 PRDABL -> digital alarm property)

	This function returns status values as follows:

	corresponding device prefix character

	This function requires the following include files:

	diolib_h, dbprops_h

	Related functions:

	dio_prefix_char_to_property_c, dio_is_valid_device_name_first_char_c,
	dio_is_possible_device_name_c, dio_parse_long_device_name_c,
	dio_device_index(_c), dio_name_to_index, dio_dev_name(_c),
	dio_full_name_to_terse_name_c, dio_terse_name_to_full_name_c

	C/C++ usage:

	char	prefix_char;
	short	property = PRSET;

	prefix_char = dio_property_to_prefix_char_c(property);