The MPFR library is a C library for multiple-precision floating-point computations with correct rounding. MPFR is based on the GMP multiple-precision library.

The main goal of MPFR is to provide a library for multiple-precision floating-point computation which is both efficient and has a well-defined semantics. It copies the good ideas from the ANSI/IEEE–754 standard for double-precision floating-point arithmetic (53-bit significand).

This software has been installed for the purpose of providing requisite build libraries to maintain a working installation of the GNU gcc toolchain at NSC, but any other use is of course warmly welcome.