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<h1>SRC/dzsum1.c File Reference</h1>Takes sum of the absolute values of a <a class="el" href="structcomplex.html">complex</a> vector and returns a double precision result. <a href="#_details">More...</a>
<p>
<code>#include &quot;<a class="el" href="slu__dcomplex_8h-source.html">slu_dcomplex.h</a>&quot;</code><br>
<code>#include &quot;<a class="el" href="slu__Cnames_8h-source.html">slu_Cnames.h</a>&quot;</code><br>
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<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="dzsum1_8c.html#5a76da95c549c41790389a76e12fdcb5">CX</a>(I)&nbsp;&nbsp;&nbsp;cx[(I)-1]</td></tr>

<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="dzsum1_8c.html#3fade9d45be0f00827565d6d0f37fe5d">dzsum1_</a> (int *n, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *cx, int *incx)</td></tr>

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<hr><a name="_details"></a><h2>Detailed Description</h2>
<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> <hr><h2>Define Documentation</h2>
<a class="anchor" name="5a76da95c549c41790389a76e12fdcb5"></a><!-- doxytag: member="dzsum1.c::CX" ref="5a76da95c549c41790389a76e12fdcb5" args="(I)" -->
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          <td class="memname">#define CX          </td>
          <td>(</td>
          <td class="paramtype">I&nbsp;</td>
          <td class="paramname">          </td>
          <td>&nbsp;)&nbsp;</td>
          <td width="100%">&nbsp;&nbsp;&nbsp;cx[(I)-1]</td>
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<hr><h2>Function Documentation</h2>
<a class="anchor" name="3fade9d45be0f00827565d6d0f37fe5d"></a><!-- doxytag: member="dzsum1.c::dzsum1_" ref="3fade9d45be0f00827565d6d0f37fe5d" args="(int *n, doublecomplex *cx, int *incx)" -->
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          <td class="memname">double dzsum1_           </td>
          <td>(</td>
          <td class="paramtype">int *&nbsp;</td>
          <td class="paramname"> <em>n</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structdoublecomplex.html">doublecomplex</a> *&nbsp;</td>
          <td class="paramname"> <em>cx</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int *&nbsp;</td>
          <td class="paramname"> <em>incx</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
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<pre>
    Purpose   
    =======</pre><p>
<pre>    DZSUM1 takes the sum of the absolute values of a <a class="el" href="structcomplex.html">complex</a>   
    vector and returns a double precision result.</pre><p>
<pre>    Based on DZASUM from the Level 1 BLAS.   
    The change is to use the 'genuine' absolute value.</pre><p>
<pre>    Contributed by Nick Higham for use with ZLACON.</pre><p>
<pre>    Arguments   
    =========</pre><p>
<pre>    N       (input) INT   
            The number of elements in the vector CX.</pre><p>
<pre>    CX      (input) COMPLEX*16 array, dimension (N)   
            The vector whose elements will be summed.</pre><p>
<pre>    INCX    (input) INT   
            The spacing between successive values of CX.  INCX &gt; 0.</pre><p>
<pre>    ===================================================================== 
</pre> 
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