ACM Collected AlgorithmsThe Collected Algorithms (CALGO) is part of a family of publications produced by the ACM (Association for Computing Machinery). Software associated with papers published in the Transactions on Mathematical Software, as well as other ACM journals are incorporated in CALGO. This software is refereed for originality, accuracy, robustness, completeness, portability, and lasting value. (See the ACM Algorithms Policy for details.) Use of ACM Algorithms is subject to the ACM Software Copyright and License Agreement.