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b087b018a1
a number of other geometric operators also depend on. It miscalculated the slope of the perpendicular to the given line segment anytime that slope was other than 0, infinite, or +/-1. In some cases the error would be masked because the true closest point on the line segment was one of its endpoints rather than the intersection point, but in other cases it could give an arbitrarily bad answer. Per bug #4872 from Nick Roosevelt. Bug goes clear back to Berkeley days, so patch all supported branches. Make a couple of cosmetic adjustments while at it.
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Changes between all PostgreSQL releases are recorded in the file HISTORY. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.