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The Cisco IOS software on the Catalyst 6500 series switches software pipe command uses Henry Spencer's regular expression library (regex).
Henry Spencer's regular expression library (regex).Copyright 1992, 1993, 1994, 1997 Henry Spencer.All rights reserved.This software is not subject to any license of the American Telephone and Telegraph Company or of the Regents of the University of California.
Permission is granted to anyone to use this software for any purpose on any computer system, and to alter it and redistribute it, subject to the following restrictions:
1. The author is not responsible for the consequences of use of this software, no matter how awful, even if they arise from flaws in it.
2. The origin of this software must not be misrepresented, either by explicit claim or by omission.Since few users ever read sources, credits must appear in the documentation.
3. Altered versions must be plainly marked as such, and must not be misrepresented as being the original software.Since few users ever read sources, credits must appear in the documentation.
4. This notice may not be removed or altered.
The Cisco IOS software on the Catalyst 6500 series switches software pipe command uses Softfloat.
Softfloat was written by John R.Hauser.This work was made possible in part by the International Computer Science Institute, located at Suite 600, 1947 Center Street, Berkeley, California 94704.Funding was partially provided by the National Science Foundation under grant MIP-9311980.The original version of this code was written as part of a project to build a fixed-point vector processor in collaboration with the University of California at Berkeley, overseen by Profs.Nelson Morgan and John Wawrzynek.More information is available through the Web page http://www.cs.berkeley.edu/~jhauser/arithmetic/SoftFloat.html.
THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.Although reasonable effort has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES RESULT IN INCORRECT BEHAVIOR.USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES, COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE.
Derivative works of Softfloat are acceptable, even for commercial purposes, so long as (1) the source code for the derivative work includes prominent notice that the work is derivative, and (2) the source code includes prominent notice with these four paragraphs for those parts of this code that are retained.