You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
5.2 KiB
HTML
111 lines
5.2 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- This manual is for GNU MPC, a library for multiple precision complex arithmetic,
|
|
version 1.0.3 of February 2015.
|
|
|
|
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 INRIA
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
|
any later version published by the Free Software Foundation; with no
|
|
Invariant Sections. A copy of the license is included in the section
|
|
entitled "GNU Free Documentation License." -->
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>Projection & Decomposing (GNU MPC 1.0.3)</title>
|
|
|
|
<meta name="description" content="Projection & Decomposing (GNU MPC 1.0.3)">
|
|
<meta name="keywords" content="Projection & Decomposing (GNU MPC 1.0.3)">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
|
|
<link href="Complex-Functions.html#Complex-Functions" rel="up" title="Complex Functions">
|
|
<link href="Basic-Arithmetic.html#Basic-Arithmetic" rel="next" title="Basic Arithmetic">
|
|
<link href="Complex-Comparison.html#Complex-Comparison" rel="prev" title="Complex Comparison">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.indentedblock {margin-right: 0em}
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smalllisp {margin-left: 3.2em}
|
|
kbd {font-style: oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nolinebreak {white-space: nowrap}
|
|
span.roman {font-family: initial; font-weight: normal}
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en">
|
|
<a name="Projection-_0026-Decomposing"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Basic-Arithmetic.html#Basic-Arithmetic" accesskey="n" rel="next">Basic Arithmetic</a>, Previous: <a href="Complex-Comparison.html#Complex-Comparison" accesskey="p" rel="prev">Complex Comparison</a>, Up: <a href="Complex-Functions.html#Complex-Functions" accesskey="u" rel="up">Complex Functions</a> [<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="Projection-and-Decomposing-Functions"></a>
|
|
<h3 class="section">5.6 Projection and Decomposing Functions</h3>
|
|
<a name="index-Projection-and-Decomposing-Functions"></a>
|
|
|
|
<dl>
|
|
<dt><a name="index-mpc_005freal"></a>Function: <em>int</em> <strong>mpc_real</strong> <em>(mpfr_t <var>rop</var>, mpc_t <var>op</var>, mpfr_rnd_t <var>rnd</var>)</em></dt>
|
|
<dd><p>Set <var>rop</var> to the value of the real part of <var>op</var> rounded
|
|
in the direction <var>rnd</var>.
|
|
</p></dd></dl>
|
|
|
|
<dl>
|
|
<dt><a name="index-mpc_005fimag"></a>Function: <em>int</em> <strong>mpc_imag</strong> <em>(mpfr_t <var>rop</var>, mpc_t <var>op</var>, mpfr_rnd_t <var>rnd</var>)</em></dt>
|
|
<dd><p>Set <var>rop</var> to the value of the imaginary part of <var>op</var> rounded in the
|
|
direction <var>rnd</var>.
|
|
</p></dd></dl>
|
|
|
|
<dl>
|
|
<dt><a name="index-mpc_005frealref"></a>Macro: <em>mpfr_t</em> <strong>mpc_realref</strong> <em>(mpc_t <var>op</var>)</em></dt>
|
|
<dt><a name="index-mpc_005fimagref"></a>Macro: <em>mpfr_t</em> <strong>mpc_imagref</strong> <em>(mpc_t <var>op</var>)</em></dt>
|
|
<dd><p>Return a reference to the real part and imaginary part of <var>op</var>,
|
|
respectively. The <code>mpfr</code> functions can be used on the result of these
|
|
macros (note that the <code>mpfr_t</code> type is itself a pointer).
|
|
</p></dd></dl>
|
|
|
|
<dl>
|
|
<dt><a name="index-mpc_005farg"></a>Function: <em>int</em> <strong>mpc_arg</strong> <em>(mpfr_t <var>rop</var>, mpc_t <var>op</var>, mpfr_rnd_t <var>rnd</var>)</em></dt>
|
|
<dd><p>Set <var>rop</var> to the argument of <var>op</var>, with a branch cut along the
|
|
negative real axis.
|
|
</p></dd></dl>
|
|
|
|
<dl>
|
|
<dt><a name="index-mpc_005fproj"></a>Function: <em>int</em> <strong>mpc_proj</strong> <em>(mpc_t <var>rop</var>, mpc_t <var>op</var>, mpc_rnd_t <var>rnd</var>)</em></dt>
|
|
<dd><p>Compute a projection of <var>op</var> onto the Riemann sphere. Set <var>rop</var> to
|
|
<var>op</var> rounded in the direction <var>rnd</var>, except when at least one part of
|
|
<var>op</var> is infinite (even if the other part is a NaN) in which case the real
|
|
part of <var>rop</var> is set to plus infinity and its imaginary part to a signed
|
|
zero with the same sign as the imaginary part of <var>op</var>.
|
|
</p></dd></dl>
|
|
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|