bool_in bool_out float8_in float8_in_opt_error float8_out int4_in int4_out int8_in int8_out MAXINT8LEN parse_bool_with_len pg_strtoint32 pg_strtoint64

int8_out() char * int8_out ( int64  val ) Return a string from an int8. Note PostgreSQL function: Datum int8out(PG_FUNCTION_ARGS)