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lognum
Introduction
A logarithmic number system (LNS) is an arithmetic system for representing real numbers. In LNS, a number X, is represented by the logarithm L of its absolute value:
X -> { s, L = \log_b(|X|) }where s denotes the sign of X (s = 1 if X > 0 and s = -1 if X < 0).
Requirements
Library procedures
- lognum?:procedure
- lognum-sign:procedure
- lognum-value:procedure
- number->lognum:procedure
- lognum->number:procedure
- lognum+:procedure
- lognum-:procedure
- lognum*:procedure
- lognum/:procedure
- lognum-neg:procedure
- lognum-abs:procedure
- lognum-signum:procedure
- lognum-recip:procedure
Authors
Ivan Raikov
Version
- 1.1
- Ported to Chicken 4
- 1.0
- Initial version
License
Copyright 2009 Ivan Raikov and the Okinawa Institute of Science and Technology.
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 3 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.
A full copy of the GPL license can be found at <http://www.gnu.org/licenses/>.