This is B-Tree implementation using GiST for int2, int4, int8, float4, float8 timestamp types. All work was done by Teodor Sigaev (teodor@stack.net) and Oleg Bartunov (oleg@sai.msu.su). See http://www.sai.msu.su/~megera/postgres/gist for additional information. NEWS: Feb 5, 2003 - btree_gist now support int2, int8, float4, float8 ! Thank Janko Richter for contribution. NOTICE: This version will works only with postgresql version 7.3 and above because of changes in interface of function calling and in system tables. INSTALLATION: gmake gmake install -- load functions psql < btree_gist.sql REGRESSION TEST: gmake installcheck EXAMPLE USAGE: create table test (a int4); -- create index create index testidx on test using gist (a); -- query select * from test where a < 10;