Licensing and acknowledgments
Copyright © 2026 Bryan R. Davies, for this manual.
SpicyRPN and this manual. SpicyRPN Release 2.0.0 is Free Open Source Software. You may use, study, modify, and redistribute the original application and this manual under the MIT License, retaining its copyright and permission notice. The US$1.99 App Store price pays for the integrated, easy-to-install iOS distribution. The editable LaTeX files and figures are this manual’s source form. Section E.1 contains the complete license. The source package’s LICENSING.md describes its scope; third-party material retains its own terms.
GNU GMP 6.3.0. SpicyRPN uses the GNU Multiple Precision Arithmetic Library under its LGPL option. The GMP library is available under the GNU Lesser General Public License, version 3 or later, or the GNU General Public License, version 2 or later, at the recipient’s choice. Its demonstration programs and test suite are licensed under the GNU General Public License, version 3 or later. See https://gmplib.org/.
GNU MPFR 4.2.2. SpicyRPN uses GNU MPFR for multiple-precision floating-point arithmetic. MPFR is licensed under the GNU Lesser General Public License, version 3 or later. Its documentation is licensed separately under the GNU Free Documentation License, version 1.3 or later, as specified in that documentation. See https://www.mpfr.org/.
GNU MPC 1.4.1. SpicyRPN uses the GNU Multiple Precision Complex library for complex arithmetic and elementary functions. MPC is licensed under the GNU Lesser General Public License, version 3 or later. See https://www.multiprecision.org/.
The mathematical libraries include work copyrighted by the Free Software Foundation and other contributors. MPC includes copyrights held by INRIA; MPFR credits the Pascaline and Caramba projects at INRIA. Their source and AUTHORS files contain detailed notices. Upstream documentation and support files retain their stated terms.
SQLite 3.51.2. SpicyRPN uses SQLite to store calculator state. The bundled SQLite amalgamation is in the public domain; its original notices remain with the source. See https://www.sqlite.org/copyright.html.
License texts. Chapter E contains the complete MIT, GPLv3, and LGPLv3 texts. Read the LGPL in section E.3 together with the GPL in section E.2, whose terms it incorporates. The libraries’ source archives retain their individual license files and notices; see chapter D.
Warranty. SpicyRPN, this manual, GMP, MPFR, and MPC are provided WITHOUT ANY WARRANTY, including the implied warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, to the extent permitted by applicable law. The applicable licenses contain the full warranty and liability terms.
Project and source information. The complete release source ZIP and compiled manual are available at no additional charge from https://spicyrpn.com/. LGPLv3 permits modifying the library portions and reverse engineering to debug those modifications. Section D.9 covers rebuilding and personal signing.