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author | Brijeshcr | 2017-07-07 17:09:19 +0530 |
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committer | Brijeshcr | 2017-07-07 17:09:19 +0530 |
commit | 282cbe9542cddac862b88d3431a18db9df781ba7 (patch) | |
tree | 2f3f8ed5c72b77cfec057c1e1511ecd0a9467d54 /2.3-1/src/c/matrixOperations/spec2/zspec2a.c | |
parent | 46da80312c4bc66bb5f16044c5c5597ac259d419 (diff) | |
parent | 8106d4ce6960cfd63c3a42171fdf5d52e46ccb06 (diff) | |
download | Scilab2C-282cbe9542cddac862b88d3431a18db9df781ba7.tar.gz Scilab2C-282cbe9542cddac862b88d3431a18db9df781ba7.tar.bz2 Scilab2C-282cbe9542cddac862b88d3431a18db9df781ba7.zip |
Linear Algebra changes by Sandeep
Diffstat (limited to '2.3-1/src/c/matrixOperations/spec2/zspec2a.c')
-rw-r--r-- | 2.3-1/src/c/matrixOperations/spec2/zspec2a.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/2.3-1/src/c/matrixOperations/spec2/zspec2a.c b/2.3-1/src/c/matrixOperations/spec2/zspec2a.c deleted file mode 100644 index e33ed897..00000000 --- a/2.3-1/src/c/matrixOperations/spec2/zspec2a.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab - * Copyright (C) 2008 - INRIA - Arnaud TORSET - * - * This file must be used under the terms of the CeCILL. - * This source file is licensed as described in the file COPYING, which - * you should have received as part of this distribution. The terms - * are also available at - * http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt - * - */ - -#include <stdlib.h> -#include "spec.h" -#include "lapack.h" -#include "zeros.h" -#include "stdio.h" -#include "conj.h" - -void zspec2a(doubleComplex* in, int rows,doubleComplex* eigenvalues, doubleComplex* eigenvectors){ - int i = 0, j = 0; - int hermitian = 0; - int INFO = 0; - int iWorkSize = 0; - doubleComplex* pdblWork; - doubleComplex* pdblLeftvectors; - doubleComplex* pdblRightvectors; - doubleComplex* pdblRWork; - double* pdblRWork2; - double* outReal; - double* outImag; - doubleComplex* inCopy; - - inCopy = (doubleComplex*)malloc((unsigned int)(rows*rows) * sizeof(doubleComplex)); - outReal = (double*)malloc((unsigned int)rows * sizeof(double)); - outImag = (double*)malloc((unsigned int)rows * sizeof(double)); - pdblLeftvectors=NULL; - pdblRightvectors=NULL; - - iWorkSize = 2*rows; - pdblWork = (doubleComplex*)malloc((unsigned int)iWorkSize * sizeof(doubleComplex)); - pdblRWork = NULL; - pdblRWork2 = NULL; - - for(i=0;i<rows*rows;i++) { - inCopy[i]=DoubleComplex(zreals(in[i]),zimags(in[i])); - eigenvectors[i]=DoubleComplex(zreals(in[i]),zimags(in[i])); - } - zzerosa(eigenvalues,1,rows*rows); - - - /* look if the matrix is symmetric */ - for (i=0;i<rows;i++){ - for (j=0;j<rows;j++) - if ( (zreals(in[i*rows+j])!=zreals(zconjs(in[i+j*rows]))) || - (zimags(in[i*rows+j])!=zimags(zconjs(in[i+j*rows]))) ) - break; - if (j!=rows) break; - } - - - /* the matrix is symmetric if the 2 loops goes to end i.e - i==rows and j==rows */ - if ((i==rows)&&(j==rows)) hermitian=1; - - - /* apply lapack function according to symmetry */ - if(hermitian){ - pdblRWork2 = (double*)malloc((unsigned int)(3*rows) * sizeof(double)); - C2F(zheev)( "V", "U", &rows, eigenvectors, &rows, outReal, pdblWork, &iWorkSize, pdblRWork2, &INFO ); - dzerosa(outImag,1,rows); - for (i=0;i<rows;i++) eigenvalues[i+i*rows]=DoubleComplex(outReal[i],outImag[i]); - } - else { - pdblRWork = (doubleComplex*)malloc((unsigned int)(3*rows) * sizeof(doubleComplex)); - C2F(zgeev)( "N", "V", &rows, inCopy, &rows, eigenvalues, - pdblLeftvectors, &rows, eigenvectors, &rows, pdblWork, &iWorkSize, - pdblRWork, &INFO ); - for (i=1;i<rows;i++) { - eigenvalues[i+i*rows]=DoubleComplex(zreals(eigenvalues[i]),zimags(eigenvalues[i])); - eigenvalues[i]=DoubleComplex(0,0); - } - } - - - - - free(inCopy); - free(outReal); - free(outImag); - free(pdblWork); - free(pdblRWork); - free(pdblRWork2); - free(pdblLeftvectors); - free(pdblRightvectors); -} |