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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2008-2008 - INRIA - Allan SIMON
*
* 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 "hilb.h"
void dhilba ( double* out, int size ){
int iIndex1 = 0;
int iIndex2 = 0;
double dblVal = size;
double dblTemp = 0;
for(iIndex1 = 0 ; iIndex1 < size ; iIndex1++)
{
if(iIndex1 != 0)
dblVal = ((size - iIndex1) * dblVal * (size + iIndex1)) / pow((double)iIndex1,2);
dblTemp = dblVal * dblVal;
out[iIndex1 * size + iIndex1] = dblTemp / ( 2 * iIndex1 + 1);
if(iIndex1 == size - 1)
break;
for(iIndex2 = iIndex1 + 1 ; iIndex2 < size ; iIndex2++)
{
dblTemp = -((size - iIndex2) * dblTemp * (size + iIndex2)) / pow((double)iIndex2,2);
out[iIndex1 * size + iIndex2] = dblTemp / (iIndex1 + iIndex2 + 1);
out[iIndex2 * size + iIndex1] = out[iIndex1 * size + iIndex2];
}
}
}
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