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While logically correct, these two Asserts could fail depending on the vagaries of floating-point arithmetic. In particular, on machines with floating-point registers wider than standard "double" values, it was possible for the compiler to compare a rounded-to-double value already stored in memory with an unrounded long double value still in a register. Given the preceding checks, these assertions aren't adding much, so let's just get rid of them rather than try to find a compiler-proof fix. Per report from Pavel Stehule. Given the lack of previous complaints, and the fact that only developers would be likely to trip over it, I'm only going to change this in HEAD, even though the code has been like this for a long time.
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/.