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authorjofret2009-04-28 06:55:15 +0000
committerjofret2009-04-28 06:55:15 +0000
commit89ce1d449dde70966962946e197c576cf350dc31 (patch)
tree913252b78bddfb80d8a7a98db0592950372f91d0 /src/matrixOperations/determ/ddeterma.c
parent49ad35ec2d8a12428a1613e2a955ddae4195e216 (diff)
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Moving source code
Diffstat (limited to 'src/matrixOperations/determ/ddeterma.c')
-rw-r--r--src/matrixOperations/determ/ddeterma.c95
1 files changed, 0 insertions, 95 deletions
diff --git a/src/matrixOperations/determ/ddeterma.c b/src/matrixOperations/determ/ddeterma.c
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--- a/src/matrixOperations/determ/ddeterma.c
+++ /dev/null
@@ -1,95 +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
- *
- */
-
-
-#ifndef WITHOUT_LAPACK
-#include "lapack.h"
-#endif
-#include "determ.h"
-#include <malloc.h>
-#include "lapack.h"
-#include <stdio.h>
-
-
-double ddeterma(double * in, int size){
-#ifndef WITHOUT_LAPACK
- int i=0, info=0;
- double out=0;
- double *inCopy=NULL;
- int* tmp=NULL;
-
- /*Calculation of the determinant*/
- switch (size){
- case 2 : out = in[0]*in[3]-in[1]*in[2];
- break;
- case 3 : /*regle de Sarrus*/
- out = in[0]*in[4]*in[8]+in[1]*in[5]*in[6]+in[2]*in[3]*in[7]
- -in[0]*in[5]*in[7]-in[1]*in[3]*in[8]-in[2]*in[4]*in[6];
- break;
- default :
-
- /*Copy the input matrix*/
- inCopy=(double*)malloc((unsigned int)(size*size)*sizeof(double));
- for (i=0;i<size*size;i++) inCopy[i]=in[i];
-
- tmp=(int*)malloc((unsigned int)size*sizeof(int));
- dgetrf_(&size, &size, inCopy, &size, tmp, &info);
- out=1;
- for (i=0;i<size;i++){
- if (tmp[i]!=i+1) out=-out;
- out=inCopy[i*(size+1)]*out;
- }
- free(tmp);
- free(inCopy);
- break;
- }
-
-#else
- int i=0, j=0, k=0;
- double out=0, pivot=0;
- double *inCopy=NULL;
-
- /*Calculation of the determinant*/
- switch (size){
- case 2 : out = in[0]*in[3]-in[1]*in[2];
- break;
- case 3 : /*regle de Sarrus*/
- out = in[0]*in[4]*in[8]+in[1]*in[5]*in[6]+in[2]*in[3]*in[7]
- -in[0]*in[5]*in[7]-in[1]*in[3]*in[8]-in[2]*in[4]*in[6];
- break;
- default :
-
- /*Copy the input matrix*/
- inCopy=malloc((unsigned int)(size*size)*sizeof(double));
- for (i=0;i<size*size;i++) inCopy[i]=in[i];
-
- for (i=0;i<size;i++){
- for (j=i+1;j<size;j++){
- pivot = inCopy[i*size+j]/inCopy[i*size+i];
- for (k=0;k<size-i;k++){
- inCopy[i*size+j+k*size]-=pivot*inCopy[i*size+i+k*size];
- }
- }
- }
- out=1;
- for (i=0;i<size;i++){
- out *= inCopy[i*size+i];
- }
- free(inCopy);
- break;
-
- }
-#endif
-
-
- return out;
-}