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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>SuperLU: SRC/zsp_blas2.c File Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>Globals</span></a></li> </ul></div><h1>SRC/zsp_blas2.c File Reference</h1>Sparse BLAS 2, using some dense BLAS 2 operations. <a href="#_details">More...</a><p><code>#include "<a class="el" href="slu__zdefs_8h-source.html">slu_zdefs.h</a>"</code><br><table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="zsp__blas2_8c.html#c9798dda11fa387039351d70fa59ce3b">zusolve</a> (int, int, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Solves a dense upper triangular system. <a href="#c9798dda11fa387039351d70fa59ce3b"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="zsp__blas2_8c.html#fb6f65890b5348dc1692d01b087be35d">zlsolve</a> (int, int, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Solves a dense UNIT lower triangular system. <a href="#fb6f65890b5348dc1692d01b087be35d"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="zsp__blas2_8c.html#1165292a4e2a6c282638868bd503fb7a">zmatvec</a> (int, int, int, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Performs a dense matrix-vector multiply: Mxvec = Mxvec + M * vec. <a href="#1165292a4e2a6c282638868bd503fb7a"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="zsp__blas2_8c.html#070a51d222072a18d8d6ac91381b4859">sp_ztrsv</a> (char *uplo, char *trans, char *diag, <a class="el" href="structSuperMatrix.html">SuperMatrix</a> *L, <a class="el" href="structSuperMatrix.html">SuperMatrix</a> *U, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *x, <a class="el" href="structSuperLUStat__t.html">SuperLUStat_t</a> *stat, int *info)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Solves one of the systems of equations A*x = b, or A'*x = b. <a href="#070a51d222072a18d8d6ac91381b4859"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="zsp__blas2_8c.html#9ea39731f07b4c2ab20e44c97ffd773c">sp_zgemv</a> (char *trans, <a class="el" href="structdoublecomplex.html">doublecomplex</a> alpha, <a class="el" href="structSuperMatrix.html">SuperMatrix</a> *A, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *x, int incx, <a class="el" href="structdoublecomplex.html">doublecomplex</a> beta, <a class="el" href="structdoublecomplex.html">doublecomplex</a> *y, int incy)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">Performs one of the matrix-vector operations y := alpha*A*x + beta*y, or y := alpha*A'*x + beta*y. <a href="#9ea39731f07b4c2ab20e44c97ffd773c"></a><br></td></tr></table><hr><a name="_details"></a><h2>Detailed Description</h2><pre> -- SuperLU routine (version 3.0) -- Univ. of California Berkeley, Xerox Palo Alto Research Center, and Lawrence Berkeley National Lab. October 15, 2003 </pre> <hr><h2>Function Documentation</h2><a class="anchor" name="9ea39731f07b4c2ab20e44c97ffd773c"></a><!-- doxytag: member="zsp_blas2.c::sp_zgemv" ref="9ea39731f07b4c2ab20e44c97ffd773c" args="(char *trans, doublecomplex alpha, SuperMatrix *A, doublecomplex *x, int incx, doublecomplex beta, doublecomplex *y, int incy)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">int sp_zgemv </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">char * </td> <td class="mdname" nowrap> <em>trans</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> </td> <td class="mdname" nowrap> <em>alpha</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structSuperMatrix.html">SuperMatrix</a> * </td> <td class="mdname" nowrap> <em>A</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> * </td> <td class="mdname" nowrap> <em>x</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>int </td> <td class="mdname" nowrap> <em>incx</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> </td> <td class="mdname" nowrap> <em>beta</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> * </td> <td class="mdname" nowrap> <em>y</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>int </td> <td class="mdname" nowrap> <em>incy</em></td> </tr> <tr> <td class="md"></td> <td class="md">) </td> <td class="md" colspan="2"></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p><pre> Purpose =======</pre><p><pre> <a class="el" href="slu__zdefs_8h.html#295a004dbce1f1b0aa48e7cb319da461">sp_zgemv()</a> performs one of the matrix-vector operations y := alpha*A*x + beta*y, or y := alpha*A'*x + beta*y, where alpha and beta are scalars, x and y are vectors and A is a sparse A->nrow by A->ncol matrix.</pre><p><pre> Parameters ==========</pre><p><pre> TRANS - (input) char* On entry, TRANS specifies the operation to be performed as follows: TRANS = 'N' or 'n' y := alpha*A*x + beta*y. TRANS = 'T' or 't' y := alpha*A'*x + beta*y. TRANS = 'C' or 'c' y := alpha*A'*x + beta*y.</pre><p><pre> ALPHA - (input) doublecomplex On entry, ALPHA specifies the scalar alpha.</pre><p><pre> A - (input) SuperMatrix* Before entry, the leading m by n part of the array A must contain the matrix of coefficients.</pre><p><pre> X - (input) doublecomplex*, array of DIMENSION at least ( 1 + ( n - 1 )*abs( INCX ) ) when TRANS = 'N' or 'n' and at least ( 1 + ( m - 1 )*abs( INCX ) ) otherwise. Before entry, the incremented array X must contain the vector x.</pre><p><pre> INCX - (input) int On entry, INCX specifies the increment for the elements of X. INCX must not be zero.</pre><p><pre> BETA - (input) doublecomplex On entry, BETA specifies the scalar beta. When BETA is supplied as zero then Y need not be set on input.</pre><p><pre> Y - (output) doublecomplex*, array of DIMENSION at least ( 1 + ( m - 1 )*abs( INCY ) ) when TRANS = 'N' or 'n' and at least ( 1 + ( n - 1 )*abs( INCY ) ) otherwise. Before entry with BETA non-zero, the incremented array Y must contain the vector y. On exit, Y is overwritten by the updated vector y.</pre><p><pre> INCY - (input) int On entry, INCY specifies the increment for the elements of Y. INCY must not be zero.</pre><p><pre> ==== Sparse Level 2 Blas routine. </pre> </td> </tr></table><a class="anchor" name="070a51d222072a18d8d6ac91381b4859"></a><!-- doxytag: member="zsp_blas2.c::sp_ztrsv" ref="070a51d222072a18d8d6ac91381b4859" args="(char *uplo, char *trans, char *diag, SuperMatrix *L, SuperMatrix *U, doublecomplex *x, SuperLUStat_t *stat, int *info)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">int sp_ztrsv </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">char * </td> <td class="mdname" nowrap> <em>uplo</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>char * </td> <td class="mdname" nowrap> <em>trans</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>char * </td> <td class="mdname" nowrap> <em>diag</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structSuperMatrix.html">SuperMatrix</a> * </td> <td class="mdname" nowrap> <em>L</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structSuperMatrix.html">SuperMatrix</a> * </td> <td class="mdname" nowrap> <em>U</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structdoublecomplex.html">doublecomplex</a> * </td> <td class="mdname" nowrap> <em>x</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap><a class="el" href="structSuperLUStat__t.html">SuperLUStat_t</a> * </td> <td class="mdname" nowrap> <em>stat</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>int * </td> <td class="mdname" nowrap> <em>info</em></td> </tr> <tr> <td class="md"></td> <td class="md">) </td> <td class="md" colspan="2"></td> </tr>⌨️ 快捷键说明
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