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As benchmarks show, using libc's string-to-integer conversion is pretty slow. At least part of the reason for that is that strtol[l] have to be more generic than what largely is required inside pg. This patch considerably speeds up int2/int4 input (int8 already was already using hand-rolled code). Most of the existing pg_atoi callers have been converted. But as one requires pg_atoi's custom delimiter functionality, and as it seems likely that there's external pg_atoi users, it seems sensible to just keep pg_atoi around. Author: Andres Freund Reviewed-By: Robert Haas Discussion: https://postgr.es/m/20171208214437.qgn6zdltyq5hmjpk@alap3.anarazel.de
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/.