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Diffstat (limited to 'btl/generic_bench/utils/size_log.hh')
-rw-r--r-- | btl/generic_bench/utils/size_log.hh | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/btl/generic_bench/utils/size_log.hh b/btl/generic_bench/utils/size_log.hh new file mode 100644 index 0000000..13a3da7 --- /dev/null +++ b/btl/generic_bench/utils/size_log.hh @@ -0,0 +1,54 @@ +//===================================================== +// File : size_log.hh +// Author : L. Plagne <laurent.plagne@edf.fr)> +// Copyright (C) EDF R&D, lun sep 30 14:23:17 CEST 2002 +//===================================================== +// +// This program is free software; you can redistribute it and/or +// modify it under the terms of the GNU General Public License +// as published by the Free Software Foundation; either version 2 +// of the License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +#ifndef SIZE_LOG +#define SIZE_LOG + +#include "math.h" +// The Vector class must satisfy the following part of STL vector concept : +// resize() method +// [] operator for seting element +// the vector element are int compatible. +template<class Vector> +void size_log(const int nb_point, const int size_min, const int size_max, Vector & X) +{ + X.resize(nb_point); + + float ls_min=log(float(size_min)); + float ls_max=log(float(size_max)); + + float ls=0.0; + + float delta_ls=(ls_max-ls_min)/(float(nb_point-1)); + + int size=0; + + for (int i=0;i<nb_point;i++){ + + ls = ls_min + float(i)*delta_ls ; + + size=int(exp(ls)); + + X[i]=size; + } + +} + + +#endif |