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Thomas Munro 5b0ce3ec33 Increase the number of possible random seeds per time period. 
Commit 197e4af9 refactored the initialization of the libc random()
seed, but reduced the number of possible seeds values that could be
chosen in a given time period.  This negation of the effects of
commit 98c50656c was unintentional.  Replace with code that
shifts the fast moving timestamp bits left, similar to the original
algorithm (though not the previous float-tolerating coding, which
is no longer necessary).

Author: Thomas Munro
Reported-by: Noah Misch
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/20181112083358.GA1073796%40rfd.leadboat.com
 		2018-11-15 16:25:30 +13:00
config Select appropriate PG_PRINTF_ATTRIBUTE for recent NetBSD. 2018-10-09 11:10:07 -04:00
contrib Still further rethinking of build changes for macOS Mojave. 2018-10-18 14:55:23 -04:00
doc Doc: remove claim that all \pset format options are unique in 1 letter. 2018-11-14 16:29:57 -05:00
src Increase the number of possible random seeds per time period. 2018-11-15 16:25:30 +13:00
.dir-locals.el Update documentation editor setup instructions 2018-07-13 21:23:41 +02:00
.gitattributes Remove contrib/tsearch2. 2017-02-13 11:06:11 -05:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
COPYRIGHT Update copyright for 2018 2018-01-02 23:30:12 -05:00
GNUmakefile.in Remove unwanted "garbage cleanup" logic in Makefiles. 2018-08-08 14:32:29 -04:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Fix non-GNU makefiles for AIX make. 2017-11-30 00:57:22 -08:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
aclocal.m4 Add configure infrastructure (--with-llvm) to enable LLVM support. 2018-03-20 17:26:25 -07:00
configure Fix inadequate autoconfiscation of copyfile() usage. 2018-11-07 16:41:42 -05:00
configure.in Fix inadequate autoconfiscation of copyfile() usage. 2018-11-07 16:41:42 -05:00

README 

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:

	https://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.  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
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.