The MPFR library is used by Macaulay2 for its arbitrary precision real number arithmetic and associated transcendental functions. It is available at http://www.mpfr.org/. The library is remarkable for the care taken to return correctly rounded results. It is hoped that this will form a good base for experimentation with algebraic algorithms that mix symbolic and numeric techniques. It is licensed under the GNU Lesser General Public License, version 3 or later.
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/Macaulay2Doc/ov_preface.m2:227:0.