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-rw-r--r--src/c/matrixOperations/spec2/dspec2a.c113
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diff --git a/src/c/matrixOperations/spec2/dspec2a.c b/src/c/matrixOperations/spec2/dspec2a.c
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--- a/src/c/matrixOperations/spec2/dspec2a.c
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@@ -1,113 +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 "max.h"
-
-void dspec2a(double* in, int rows,double* eigenvalues,double* eigenvectors){
- int i=0, j=0, ij=0, ij1=0;
- int symmetric=0;
- int INFO=0;
- int iWorkSize = 0;
- double* pdblWork;
- double* outReal;
- double* outImag;
- double* pdblLeftvectors;
- double* pdblRightvectors;
- double* inCopy;
-
- /* FIXME : malloc here */
- inCopy = (double*)malloc((unsigned int)(rows*rows) * sizeof(double));
- outReal = (double*)malloc((unsigned int)rows * sizeof(double));
- outImag = NULL;
- pdblLeftvectors=NULL;
- pdblRightvectors=NULL;
-
-
- iWorkSize = 4*rows;
- pdblWork = (double*)malloc((unsigned int)iWorkSize * sizeof(double));
-
- for(i=0;i<rows*rows;i++) inCopy[i]=in[i];
-
-
-
- /* look if the matrix is symmetric */
- for (i=0;i<rows;i++){
- for (j=0;j<rows;j++)
- if (in[i*rows+j]!=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)) symmetric=1;
-
- /* apply lapack function according to symmetry */
- if(symmetric){
- C2F(dsyev)( "V", "U", &rows, inCopy, &rows, outReal, pdblWork, &iWorkSize, &INFO );
-
- /* Computation of eigenvectors */
- for (i=0;i<rows*rows;i++) eigenvectors[i] = inCopy[i];
- }
- else {
- pdblRightvectors=(double*)malloc((unsigned int)(rows*rows) * sizeof(double));
- outImag = (double*)malloc((unsigned int)rows * sizeof(double));
- C2F(dgeev)( "N", "V", &rows, inCopy, &rows, outReal, outImag,
- pdblLeftvectors, &rows, pdblRightvectors, &rows, pdblWork, &iWorkSize, &INFO );
-
- /* Computation of eigenvectors */
- j=0;
- while (j<rows)
- {
- if (outImag[j]==0)
- {
- for(i = 0 ; i < rows ; i++)
- {
- ij = i + j * rows;
- eigenvectors[ij] = pdblRightvectors[ij];
- }
- j = j + 1;
- }
- else
- {
- for(i = 0 ; i < rows ; i++)
- {
- ij = i + j * rows;
- ij1 = i + (j + 1) * rows;
- eigenvectors[ij] = pdblRightvectors[ij];
- eigenvectors[ij1] = pdblRightvectors[ij];
- }
- j = j + 2;
- }
- }
- }
-
- /* Computation of eigenvalues */
- dzerosa(eigenvalues,1,rows*rows);
- for (i=0;i<rows;i++) eigenvalues[i+i*rows]=outReal[i];
-
-
-
-
- free(inCopy);
- free(outReal);
- free(outImag);
- free(pdblLeftvectors);
- free(pdblRightvectors);
- free(pdblWork);
-
-}
-