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+/* contrib/seg/seg--1.1.sql */
+
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "CREATE EXTENSION seg" to load this file. \quit
+
+-- Create the user-defined type for 1-D floating point intervals (seg)
+
+CREATE FUNCTION seg_in(cstring)
+RETURNS seg
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+CREATE FUNCTION seg_out(seg)
+RETURNS cstring
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+CREATE TYPE seg (
+ INTERNALLENGTH = 12,
+ INPUT = seg_in,
+ OUTPUT = seg_out
+);
+
+COMMENT ON TYPE seg IS
+'floating point interval ''FLOAT .. FLOAT'', ''.. FLOAT'', ''FLOAT ..'' or ''FLOAT''';
+
+--
+-- External C-functions for R-tree methods
+--
+
+-- Left/Right methods
+
+CREATE FUNCTION seg_over_left(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_over_left(seg, seg) IS
+'overlaps or is left of';
+
+CREATE FUNCTION seg_over_right(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_over_right(seg, seg) IS
+'overlaps or is right of';
+
+CREATE FUNCTION seg_left(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_left(seg, seg) IS
+'is left of';
+
+CREATE FUNCTION seg_right(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_right(seg, seg) IS
+'is right of';
+
+
+-- Scalar comparison methods
+
+CREATE FUNCTION seg_lt(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_lt(seg, seg) IS
+'less than';
+
+CREATE FUNCTION seg_le(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_le(seg, seg) IS
+'less than or equal';
+
+CREATE FUNCTION seg_gt(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_gt(seg, seg) IS
+'greater than';
+
+CREATE FUNCTION seg_ge(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_ge(seg, seg) IS
+'greater than or equal';
+
+CREATE FUNCTION seg_contains(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_contains(seg, seg) IS
+'contains';
+
+CREATE FUNCTION seg_contained(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_contained(seg, seg) IS
+'contained in';
+
+CREATE FUNCTION seg_overlap(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_overlap(seg, seg) IS
+'overlaps';
+
+CREATE FUNCTION seg_same(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_same(seg, seg) IS
+'same as';
+
+CREATE FUNCTION seg_different(seg, seg)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_different(seg, seg) IS
+'different';
+
+-- support routines for indexing
+
+CREATE FUNCTION seg_cmp(seg, seg)
+RETURNS int4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+COMMENT ON FUNCTION seg_cmp(seg, seg) IS 'btree comparison function';
+
+CREATE FUNCTION seg_union(seg, seg)
+RETURNS seg
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+CREATE FUNCTION seg_inter(seg, seg)
+RETURNS seg
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+CREATE FUNCTION seg_size(seg)
+RETURNS float4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+-- miscellaneous
+
+CREATE FUNCTION seg_center(seg)
+RETURNS float4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+CREATE FUNCTION seg_upper(seg)
+RETURNS float4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+CREATE FUNCTION seg_lower(seg)
+RETURNS float4
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
+
+
+--
+-- OPERATORS
+--
+
+CREATE OPERATOR < (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_lt,
+ COMMUTATOR = '>',
+ NEGATOR = '>=',
+ RESTRICT = scalarltsel,
+ JOIN = scalarltjoinsel
+);
+
+CREATE OPERATOR <= (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_le,
+ COMMUTATOR = '>=',
+ NEGATOR = '>',
+ RESTRICT = scalarltsel,
+ JOIN = scalarltjoinsel
+);
+
+CREATE OPERATOR > (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_gt,
+ COMMUTATOR = '<',
+ NEGATOR = '<=',
+ RESTRICT = scalargtsel,
+ JOIN = scalargtjoinsel
+);
+
+CREATE OPERATOR >= (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_ge,
+ COMMUTATOR = '<=',
+ NEGATOR = '<',
+ RESTRICT = scalargtsel,
+ JOIN = scalargtjoinsel
+);
+
+CREATE OPERATOR << (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_left,
+ COMMUTATOR = '>>',
+ RESTRICT = positionsel,
+ JOIN = positionjoinsel
+);
+
+CREATE OPERATOR &< (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_over_left,
+ RESTRICT = positionsel,
+ JOIN = positionjoinsel
+);
+
+CREATE OPERATOR && (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_overlap,
+ COMMUTATOR = '&&',
+ RESTRICT = areasel,
+ JOIN = areajoinsel
+);
+
+CREATE OPERATOR &> (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_over_right,
+ RESTRICT = positionsel,
+ JOIN = positionjoinsel
+);
+
+CREATE OPERATOR >> (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_right,
+ COMMUTATOR = '<<',
+ RESTRICT = positionsel,
+ JOIN = positionjoinsel
+);
+
+CREATE OPERATOR = (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_same,
+ COMMUTATOR = '=',
+ NEGATOR = '<>',
+ RESTRICT = eqsel,
+ JOIN = eqjoinsel,
+ MERGES
+);
+
+CREATE OPERATOR <> (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_different,
+ COMMUTATOR = '<>',
+ NEGATOR = '=',
+ RESTRICT = neqsel,
+ JOIN = neqjoinsel
+);
+
+CREATE OPERATOR @> (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_contains,
+ COMMUTATOR = '<@',
+ RESTRICT = contsel,
+ JOIN = contjoinsel
+);
+
+CREATE OPERATOR <@ (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_contained,
+ COMMUTATOR = '@>',
+ RESTRICT = contsel,
+ JOIN = contjoinsel
+);
+
+-- obsolete:
+CREATE OPERATOR @ (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_contains,
+ COMMUTATOR = '~',
+ RESTRICT = contsel,
+ JOIN = contjoinsel
+);
+
+CREATE OPERATOR ~ (
+ LEFTARG = seg,
+ RIGHTARG = seg,
+ PROCEDURE = seg_contained,
+ COMMUTATOR = '@',
+ RESTRICT = contsel,
+ JOIN = contjoinsel
+);
+
+
+-- define the GiST support methods
+CREATE FUNCTION gseg_consistent(internal,seg,smallint,oid,internal)
+RETURNS bool
+AS 'MODULE_PATHNAME'
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+
+CREATE FUNCTION gseg_compress(internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+
+CREATE FUNCTION gseg_decompress(internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+
+CREATE FUNCTION gseg_penalty(internal,internal,internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+
+CREATE FUNCTION gseg_picksplit(internal, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+
+CREATE FUNCTION gseg_union(internal, internal)
+RETURNS seg
+AS 'MODULE_PATHNAME'
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+
+CREATE FUNCTION gseg_same(seg, seg, internal)
+RETURNS internal
+AS 'MODULE_PATHNAME'
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+
+
+-- Create the operator classes for indexing
+
+CREATE OPERATOR CLASS seg_ops
+ DEFAULT FOR TYPE seg USING btree AS
+ OPERATOR 1 < ,
+ OPERATOR 2 <= ,
+ OPERATOR 3 = ,
+ OPERATOR 4 >= ,
+ OPERATOR 5 > ,
+ FUNCTION 1 seg_cmp(seg, seg);
+
+CREATE OPERATOR CLASS gist_seg_ops
+DEFAULT FOR TYPE seg USING gist
+AS
+ OPERATOR 1 << ,
+ OPERATOR 2 &< ,
+ OPERATOR 3 && ,
+ OPERATOR 4 &> ,
+ OPERATOR 5 >> ,
+ OPERATOR 6 = ,
+ OPERATOR 7 @> ,
+ OPERATOR 8 <@ ,
+ OPERATOR 13 @ ,
+ OPERATOR 14 ~ ,
+ FUNCTION 1 gseg_consistent (internal, seg, smallint, oid, internal),
+ FUNCTION 2 gseg_union (internal, internal),
+ FUNCTION 3 gseg_compress (internal),
+ FUNCTION 4 gseg_decompress (internal),
+ FUNCTION 5 gseg_penalty (internal, internal, internal),
+ FUNCTION 6 gseg_picksplit (internal, internal),
+ FUNCTION 7 gseg_same (seg, seg, internal);