66 lines
2.5 KiB
XML
66 lines
2.5 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN"
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"../../../tools/boostbook/dtd/boostbook.dtd">
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<!-- Copyright (c) 2001-2004 CrystalClear Software, Inc.
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Subject to the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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-->
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<section id="date_time.posix_time"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<title>Posix Time</title>
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<bridgehead renderas="sect2">Posix Time System</bridgehead>
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<para>
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<link linkend="posix_intro">Introduction</link> --
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<link linkend="posix_ex">Usage Examples</link>
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</para>
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<anchor id="posix_intro" />
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<bridgehead renderas="sect3">Introduction</bridgehead>
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<para>
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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.
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</para>
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<anchor id="posix_ex" />
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<bridgehead renderas="sect3">Usage Examples</bridgehead>
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<para>
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<informaltable frame="all">
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<tgroup cols="2">
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<thead>
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<row>
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<entry>Example</entry>
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<entry>Description</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry><link linkend="date_time.examples.time_math">Time Math</link></entry>
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<entry>A few simple calculations using ptime and time_durations.</entry>
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</row>
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<row>
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<entry><link linkend="date_time.examples.print_hours">Print Hours</link></entry>
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<entry>Retrieve time from clock, use a time_iterator.</entry>
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</row>
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<row>
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<entry><link linkend="date_time.examples.local_utc_conversion">Local to UTC Conversion</link></entry>
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<entry>Demonstrates a couple different ways to convert a local to UTC time including daylight savings rules.</entry>
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</row>
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<row>
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<entry><link linkend="date_time.examples.time_periods">Time Periods</link></entry>
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<entry>Some simple examples of intersection and display of time periods.</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</para>
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<xi:include href="ptime_class.xml" />
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<xi:include href="time_duration.xml" />
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<xi:include href="time_period.xml" />
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<xi:include href="time_iterators.xml" />
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<!-- includes here -->
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</section>
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