/usr/share/postgresql/10/extension/cube--1.0--1.1.sql is in postgresql-10 10.6-0ubuntu0.18.04.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | /* contrib/cube/cube--1.0--1.1.sql */
-- complain if script is sourced in psql, rather than via ALTER EXTENSION
\echo Use "ALTER EXTENSION cube UPDATE TO '1.1'" to load this file. \quit
CREATE FUNCTION distance_chebyshev(cube, cube)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION distance_taxicab(cube, cube)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION cube_coord(cube, int4)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION cube_coord_llur(cube, int4)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE OPERATOR -> (
LEFTARG = cube, RIGHTARG = int, PROCEDURE = cube_coord
);
CREATE OPERATOR ~> (
LEFTARG = cube, RIGHTARG = int, PROCEDURE = cube_coord_llur
);
CREATE OPERATOR <#> (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = distance_taxicab,
COMMUTATOR = '<#>'
);
CREATE OPERATOR <-> (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = cube_distance,
COMMUTATOR = '<->'
);
CREATE OPERATOR <=> (
LEFTARG = cube, RIGHTARG = cube, PROCEDURE = distance_chebyshev,
COMMUTATOR = '<=>'
);
CREATE FUNCTION g_cube_distance (internal, cube, smallint, oid)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
ALTER OPERATOR FAMILY gist_cube_ops USING gist ADD
OPERATOR 15 ~> (cube, int) FOR ORDER BY float_ops,
OPERATOR 16 <#> (cube, cube) FOR ORDER BY float_ops,
OPERATOR 17 <-> (cube, cube) FOR ORDER BY float_ops,
OPERATOR 18 <=> (cube, cube) FOR ORDER BY float_ops,
FUNCTION 8 (cube, cube) g_cube_distance (internal, cube, smallint, oid);
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