227 lines
7.1 KiB
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227 lines
7.1 KiB
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<title>Complex Number Types</title>
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<div class="titlepage"><div><div><h3 class="title">
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<a name="boost_multiprecision.tut.complex"></a><a class="link" href="complex.html" title="Complex Number Types">Complex Number Types</a>
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</h3></div></div></div>
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<div class="toc"><dl class="toc">
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<dt><span class="section"><a href="complex/cpp_complex.html">cpp_complex</a></span></dt>
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<dt><span class="section"><a href="complex/mpc_complex.html">mpc_complex</a></span></dt>
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<dt><span class="section"><a href="complex/complex128.html">complex128</a></span></dt>
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<dt><span class="section"><a href="complex/complex_adaptor.html">complex_adaptor</a></span></dt>
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</dl></div>
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<p>
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The following backends provide complex number arithmetic:
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</p>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Backend Type
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</p>
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</th>
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<th>
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<p>
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Header
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</p>
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</th>
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<th>
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<p>
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Radix
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</p>
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</th>
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<th>
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<p>
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Dependencies
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</p>
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</th>
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<th>
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<p>
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Pros
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</p>
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</th>
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<th>
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<p>
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Cons
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">cpp_complex</span></code>
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</p>
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</td>
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<td>
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<p>
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boost/multiprecision/cpp_complex.hpp
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</p>
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</td>
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<td>
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<p>
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2
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</p>
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</td>
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<td>
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<p>
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None
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</p>
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</td>
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<td>
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<p>
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An all C++ Boost-licensed implementation.
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</p>
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</td>
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<td>
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<p>
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Slower than <a href="http://www.multiprecision.org" target="_top">MPC</a>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">mpc</span></code>
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</p>
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</td>
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<td>
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<p>
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boost/multiprecision/mpc.hpp
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</p>
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</td>
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<td>
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<p>
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2
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</td>
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<td>
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<p>
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<a href="http://www.multiprecision.org" target="_top">MPC</a>
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</p>
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</td>
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<td>
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<p>
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Very fast and efficient back-end.
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</p>
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</td>
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<td>
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<p>
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Dependency on LGLP-licensed [MPC] library.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">compplex128</span></code>
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</p>
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</td>
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<td>
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<p>
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boost/multiprecision/complex128.hpp
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</p>
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</td>
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<td>
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<p>
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2
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</p>
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</td>
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<td>
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<p>
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<code class="computeroutput"><a class="link" href="floats/float128.html" title="float128">float128</a></code>
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and libquadmath
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</p>
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</td>
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<td>
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<p>
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Very fast and efficient number type.
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</p>
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</td>
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<td>
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<p>
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128-bit precision only, and resticted to GCC.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">complex_adaptor</span></code>
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</p>
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</td>
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<td>
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<p>
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boost/multiprecision/complex_adaptor.hpp
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</p>
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</td>
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<td>
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<p>
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-
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</p>
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</td>
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<td>
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<p>
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none
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</p>
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</td>
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<td>
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<p>
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Can convert any backend type into a complex number backend.
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</p>
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</td>
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<td>
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<p>
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Not a numbe rin it's own right, and hard to use as a result.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2002-2019 John Maddock
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and Christopher Kormanyos<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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</p>
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