diff options
Diffstat (limited to '2.3-1/src/c/matrixOperations/hilb/shilba.c')
-rw-r--r-- | 2.3-1/src/c/matrixOperations/hilb/shilba.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/2.3-1/src/c/matrixOperations/hilb/shilba.c b/2.3-1/src/c/matrixOperations/hilb/shilba.c new file mode 100644 index 00000000..25249ced --- /dev/null +++ b/2.3-1/src/c/matrixOperations/hilb/shilba.c @@ -0,0 +1,44 @@ +/* + * 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 shilba ( float* out, int size ){ + + int iIndex1 = 0; + int iIndex2 = 0; + float dblVal = (float) size; + float dblTemp = 0; + + for(iIndex1 = 0 ; iIndex1 < size ; iIndex1++) + { + if(iIndex1 != 0) + dblVal = ((float)(size - iIndex1) * dblVal * (float)(size + iIndex1)) /(float) pow((double)iIndex1,2); + + dblTemp = dblVal * dblVal; + + out[iIndex1 * size + iIndex1] =(float) dblTemp /(float) ( 2 * iIndex1 + 1); + + if(iIndex1 == size - 1) + break; + + for(iIndex2 = iIndex1 + 1 ; iIndex2 < size ; iIndex2++) + { + dblTemp = -((float)(size - iIndex2) * dblTemp *(float) (size + iIndex2)) /(float) pow((double)iIndex2,2); + out[iIndex1 * size + iIndex2] = dblTemp /(float) (iIndex1 + iIndex2 + 1); + out[iIndex2 * size + iIndex1] = out[iIndex1 * size + iIndex2]; + } + } + + +} |