00001 /*@HEADER 00002 // *********************************************************************** 00003 // 00004 // Ifpack: Object-Oriented Algebraic Preconditioner Package 00005 // Copyright (2002) Sandia Corporation 00006 // 00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive 00008 // license for use of this work by or on behalf of the U.S. Government. 00009 // 00010 // This library is free software; you can redistribute it and/or modify 00011 // it under the terms of the GNU Lesser General Public License as 00012 // published by the Free Software Foundation; either version 2.1 of the 00013 // License, or (at your option) any later version. 00014 // 00015 // This library is distributed in the hope that it will be useful, but 00016 // WITHOUT ANY WARRANTY; without even the implied warranty of 00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00018 // Lesser General Public License for more details. 00019 // 00020 // You should have received a copy of the GNU Lesser General Public 00021 // License along with this library; if not, write to the Free Software 00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00023 // USA 00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 00025 // 00026 // *********************************************************************** 00027 //@HEADER 00028 */ 00029 00030 #ifndef IFPACK_IC_UTILS_H 00031 #define IFPACK_IC_UTILS_H 00032 00033 typedef struct { 00034 double *val; /* also known as A */ 00035 int *col; /* also known as JA; first column is column 0 */ 00036 int *ptr; /* also known as IA; with ptr[0] = 0 */ 00037 } Ifpack_AIJMatrix; 00038 00039 extern "C" { 00040 void quicksort (int *const pbase, double *const daux, int total_elems); 00041 } 00042 00043 void Ifpack_AIJMatrix_dealloc(Ifpack_AIJMatrix *a); 00044 00045 void crout_ict( 00046 int n, 00047 #ifdef IFPACK 00048 void * A, 00049 int maxentries, 00050 int (*getcol)( void * A, int col, int ** nentries, double * val, int * ind), 00051 int (*getdiag)( void *A, double * diag), 00052 #else 00053 const Ifpack_AIJMatrix *AL, 00054 const double *Adiag, 00055 #endif 00056 double droptol, 00057 int lfil, 00058 Ifpack_AIJMatrix *L, 00059 double **pdiag); 00060 00061 00062 #endif