Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The special functions and tools in this library can be used with NTL::RR (an arbitrary precision number type), via the bindings in boost/math/bindings/rr.hpp. See also NTL: A Library for doing Number Theory by Victor Shoup
Unfortunately NTL::RR doesn't quite satisfy our conceptual
requirements, so there is a very thin wrapper class boost::math::ntl::RR defined in boost/math/bindings/rr.hpp
that you should use in place of NTL::RR. The
class is intended to be a drop-in replacement for the "real" NTL::RR
that adds some syntactic sugar to keep this library happy, plus some of the
standard library functions not implemented in NTL.
For those functions that are based upon the Lanczos
approximation, the bindings defines a series of approximations with
up to 61 terms and accuracy up to approximately 3e-113. This therefore sets
the upper limit for accuracy to the majority of functions defined this library
when used with NTL::RR.
There is a concept checking test program for NTL support here.