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<p>Finds the index of the element whose real part has maximum absolute value.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include <math.h></code><br />
<code>#include "<a class="el" href="slu__dcomplex_8h_source.html">slu_dcomplex.h</a>"</code><br />
<code>#include "<a class="el" href="slu__Cnames_8h_source.html">slu_Cnames.h</a>"</code><br />
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<tr class="memitem:a5a76da95c549c41790389a76e12fdcb5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="izmax1_8c.html#a5a76da95c549c41790389a76e12fdcb5">CX</a>(I)   cx[(I)-1]</td></tr>
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<tr class="memitem:aaf53fd062f8467a96cf58270c87e398a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="izmax1_8c.html#aaf53fd062f8467a96cf58270c87e398a">izmax1_slu</a> (int *n, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *cx, int *incx)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p >Copyright (c) 2003, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from U.S. Dept. of Energy)</p>
<p >All rights reserved.</p>
<p >The source code is distributed under BSD license, see the file License.txt at the top-level directory.</p>
<pre>
-- LAPACK auxiliary routine (version 2.0) --
Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
Courant Institute, Argonne National Lab, and Rice University
October 31, 1992
</pre> </div><h2 class="groupheader">Macro Definition Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a5a76da95c549c41790389a76e12fdcb5">◆ </a></span>CX</h2>
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<td class="memname">#define CX</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">I</td><td>)</td>
<td>   cx[(I)-1]</td>
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<h2 class="memtitle"><span class="permalink"><a href="#aaf53fd062f8467a96cf58270c87e398a">◆ </a></span>izmax1_slu()</h2>
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<td class="memname">int izmax1_slu </td>
<td>(</td>
<td class="paramtype">int * </td>
<td class="paramname"><em>n</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structdoublecomplex.html">doublecomplex</a> * </td>
<td class="paramname"><em>cx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int * </td>
<td class="paramname"><em>incx</em> </td>
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<td>)</td>
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<pre>
Purpose
=======
IZMAX1 finds the index of the element whose real part has maximum
absolute value.
Based on IZAMAX from Level 1 BLAS.
The change is to use the 'genuine' absolute value.
Contributed by Nick Higham for use with ZLACON.
Arguments
=========
N (input) INT
The number of elements in the vector CX.
CX (input) COMPLEX*16 array, dimension (N)
The vector whose elements will be summed.
INCX (input) INT
The spacing between successive values of CX. INCX >= 1.
=====================================================================
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