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MatrixUtil.h

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00001 /* ****************************************************************** **
00002 **    OpenSees - Open System for Earthquake Engineering Simulation    **
00003 **          Pacific Earthquake Engineering Research Center            **
00004 **                                                                    **
00005 **                                                                    **
00006 ** (C) Copyright 1999, The Regents of the University of California    **
00007 ** All Rights Reserved.                                               **
00008 **                                                                    **
00009 ** Commercial use of this program without express permission of the   **
00010 ** University of California, Berkeley, is strictly prohibited.  See   **
00011 ** file 'COPYRIGHT'  in main directory for information on usage and   **
00012 ** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
00013 **                                                                    **
00014 ** Developed by:                                                      **
00015 **   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
00016 **   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
00017 **   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
00018 **                                                                    **
00019 ** ****************************************************************** */
00020                                                                         
00021 // $Revision: 1.2 $
00022 // $Date: 2003/04/04 16:55:03 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/element/nonlinearBeamColumn/matrixutil/MatrixUtil.h,v $
00024                                                                         
00025                                                                         
00026 #ifndef MatrixUtil_h
00027 #define MatrixUtil_h
00028 
00029 #include <Matrix.h>
00030 
00031 double invert2by2Matrix(const Matrix &a, Matrix &b);
00032 double invert3by3Matrix(const Matrix &a, Matrix &b);
00033 void   invertMatrix(int n, const Matrix &a, Matrix &b);
00034 void   getCBDIinfluenceMatrix(int nIntegrPts, const Matrix &xi_pt, double L, Matrix &ls);
00035 void   getCBDIinfluenceMatrix(int nIntegrPts, double *pts, double L, Matrix &ls);
00036 
00037 #endif

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