num_remaining.i4.v = str_remove_nonprintables_c(string.i1a.r,

	This routine will remove any nonprintable characters from a string.
	If any characters are removed, the modified string will be padded
	with "fill_char" characters.

	string		string to remove characters from
	length		length of string  (If this argument has a value
			of zero, the routine will determine the length
			of the string.)
	fill_char	string padding character

	This function returns status values as follows:

	CLIB_INVARG		invalid length passed
	otherwise		number of remaining characters

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	str_is_printable_c, str_printable_length_c, str_make_printable_c,
	str_remove_char_set_c, str_remove_eol_characters_c,
	str_remove_html_tags_c, str_remove_char_set_c, str_remove_character_c,
	str_remove_spaces_c, str_expand_tabs_c, str_replace_char_c,

	C/C++ usage:

	static char	string[] = "Remove nonprintables, from this string.";
	char	fill_char = 0;
	int	num_remaining;
	int	length = 0;

	num_remaining = str_remove_nonprintables_c(string,length,fill_char);