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- <?xml version="1.0" encoding="utf-8"?>
- <!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN"
- "../../../tools/boostbook/dtd/boostbook.dtd">
- <!-- Copyright (c) 2001-2004 CrystalClear Software, Inc.
- Subject to the Boost Software License, Version 1.0.
- (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
- -->
- <section id="date_time.posix_time"
- xmlns:xi="http://www.w3.org/2001/XInclude">
- <title>Posix Time</title>
- <bridgehead renderas="sect2">Posix Time System</bridgehead>
- <para>
- <link linkend="posix_intro">Introduction</link> --
- <link linkend="posix_ex">Usage Examples</link>
- </para>
-
- <anchor id="posix_intro" />
- <bridgehead renderas="sect3">Introduction</bridgehead>
- <para>
- Defines a non-adjusted time system with nano-second/micro-second resolution and stable calculation properties. The nano-second resolution option uses 96 bits of underlying storage for each ptime while the micro-second resolution uses 64 bits per ptime (see <link linkend="date_time.buildinfo">Build Options</link> for details). This time system uses the Gregorian calendar to implement the date portion of the time representation.
- </para>
- <anchor id="posix_ex" />
- <bridgehead renderas="sect3">Usage Examples</bridgehead>
- <para>
- <informaltable frame="all">
- <tgroup cols="2">
- <thead>
- <row>
- <entry>Example</entry>
- <entry>Description</entry>
- </row>
- </thead>
- <tbody>
- <row>
- <entry><link linkend="date_time.examples.time_math">Time Math</link></entry>
- <entry>A few simple calculations using ptime and time_durations.</entry>
- </row>
- <row>
- <entry><link linkend="date_time.examples.print_hours">Print Hours</link></entry>
- <entry>Retrieve time from clock, use a time_iterator.</entry>
- </row>
- <row>
- <entry><link linkend="date_time.examples.local_utc_conversion">Local to UTC Conversion</link></entry>
- <entry>Demonstrates a couple different ways to convert a local to UTC time including daylight savings rules.</entry>
- </row>
- <row>
- <entry><link linkend="date_time.examples.time_periods">Time Periods</link></entry>
- <entry>Some simple examples of intersection and display of time periods.</entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable>
- </para>
-
- <xi:include href="ptime_class.xml" />
- <xi:include href="time_duration.xml" />
- <xi:include href="time_period.xml" />
- <xi:include href="time_iterators.xml" />
- <!-- includes here -->
-
- </section>
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