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Tom Lane d1fc750b51 Make numeric power() handle NaNs according to the modern POSIX spec. 
In commit 6bdf1303b, we ensured that power()/^ for float8 would honor
the NaN behaviors specified by POSIX standards released in this century,
ie NaN ^ 0 = 1 and 1 ^ NaN = 1.  However, numeric_power() was not
touched and continued to follow the once-common behavior that every
case involving NaN input produces NaN.  For consistency, let's switch
the numeric behavior to the modern spec in the same release that ensures
that behavior for float8.

(Note that while 6bdf1303b was initially back-patched, we later undid
that, concluding that any behavioral change should appear only in v11.)

Discussion: https://postgr.es/m/10898.1526421338@sss.pgh.pa.us
 		2018-05-17 11:10:50 -04:00
config Use ARMv8 CRC instructions where available. 2018-04-04 12:22:45 +03:00
contrib Pass the correct PlannerInfo to PlanForeignModify/PlanDirectModify. 2018-05-16 11:32:38 -04:00
doc doc: PG 11 release notes adjustments 2018-05-16 20:36:22 -04:00
src Make numeric power() handle NaNs according to the modern POSIX spec. 2018-05-17 11:10:50 -04:00
.dir-locals.el Make Emacs settings match perltidy configuration 2018-04-23 11:44:31 -04:00
.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 Have "make coverage" recurse into contrib as well 2016-09-05 18:44:36 -03:00
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 Improve our method for probing the availability of ARM CRC instructions. 2018-05-02 18:06:43 -04:00
configure.in Improve our method for probing the availability of ARM CRC instructions. 2018-05-02 18:06:43 -04:00

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/.