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authorjofret2009-04-28 06:55:15 +0000
committerjofret2009-04-28 06:55:15 +0000
commit89ce1d449dde70966962946e197c576cf350dc31 (patch)
tree913252b78bddfb80d8a7a98db0592950372f91d0 /src/matrixOperations/powm/cpowma.c
parent49ad35ec2d8a12428a1613e2a955ddae4195e216 (diff)
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Moving source code
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diff --git a/src/matrixOperations/powm/cpowma.c b/src/matrixOperations/powm/cpowma.c
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-/*
- * 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 <malloc.h>
-#include "matrixPow.h"
-#include "spec.h"
-#include "pow.h"
-#include "matrixTranspose.h"
-#include "conj.h"
-#include "matrixInversion.h"
-#include "matrixMultiplication.h"
-
-void cpowma(floatComplex* in, int rows, floatComplex power, floatComplex* out){
- int i=0, j=0;
- int hermitian=0;
- floatComplex *eigenvalues,*eigenvectors,*tmp;
-
- /* Data initialization */
- eigenvalues = (floatComplex*)malloc((unsigned int)(rows*rows)*sizeof(floatComplex));
- eigenvectors = (floatComplex*)malloc((unsigned int)(rows*rows)*sizeof(floatComplex));
- tmp = (floatComplex*)malloc((unsigned int)(rows*rows)*sizeof(floatComplex));
-
- /* symmetric test*/
- for(i=0;i<rows;i++) {
- for (j=0;j<rows;j++)
- if ((creals(in[i*rows+j])!=creals(in[j*rows+i])) || (cimags(in[i*rows+j])!=-cimags(in[j*rows+i]))) break;
-
- if (j!=rows) break;
- }
-
- if ((i==rows)&&(j==rows)) hermitian=1;
-
-
- /* find eigenvalues and eigenvectors */
- cspec2a(in, rows, eigenvalues,eigenvectors);
-
- /* make operation on eigenvalues and eigenvectors */
- for (i=0;i<rows;i++)
- eigenvalues[i+i*rows]=cpows(eigenvalues[i+i*rows],power);
-
- cmulma(eigenvectors, rows, rows, eigenvalues, rows, rows, tmp);
-
- if (hermitian){
- ctransposea(eigenvectors, rows,rows, eigenvalues);
- cconja(eigenvalues, rows*rows, eigenvalues);
- }
- else cinverma(eigenvectors, eigenvalues, rows);
-
- cmulma(tmp, rows, rows, eigenvalues, rows, rows, out);
-
- free(eigenvalues);
- free(eigenvectors);
- free(tmp);
-
-}