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Diffstat (limited to 'casa/algorithms/BinarySearch.C')
-rw-r--r-- | casa/algorithms/BinarySearch.C | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/casa/algorithms/BinarySearch.C b/casa/algorithms/BinarySearch.C new file mode 100644 index 0000000..4ee02bc --- /dev/null +++ b/casa/algorithms/BinarySearch.C @@ -0,0 +1,37 @@ +// Copyright 2008, 2009 Brady J. Garvin + +// This file is part of Covering Arrays by Simulated Annealing (CASA). + +// CASA 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 3 of the License, or +// (at your option) any later version. + +// CASA 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 CASA. If not, see <http://www.gnu.org/licenses/>. + + +#include <cassert> +#include "algorithms/BinarySearch.H" + +unsigned BinarySearch::operator ()(unsigned offset, unsigned size) { + unsigned result = offset + size; + while (size) { + unsigned division = partitioner(offset, size); + assert(division - offset < size); + if (predicate(division)) { + size = division - offset; + result = division; + } else { + ++division; + size += offset - division; + offset = division; + } + } + return result; +} |