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README.md

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+Boost Multiprecision Library
+============================
+
+ The Multiprecision Library provides integer, rational, floating-point, complex and interval number types in C++ that have more range and 
+ precision than C++'s ordinary built-in types. The big number types in Multiprecision can be used with a wide selection of basic 
+ mathematical operations, elementary transcendental functions as well as the functions in Boost.Math. The Multiprecision types can 
+ also interoperate with the built-in types in C++ using clearly defined conversion rules. This allows Boost.Multiprecision to be 
+ used for all kinds of mathematical calculations involving integer, rational and floating-point types requiring extended range and precision.
+
+Multiprecision consists of a generic interface to the mathematics of large numbers as well as a selection of big number back ends, with 
+support for integer, rational and floating-point types. Boost.Multiprecision provides a selection of back ends provided off-the-rack in 
+including interfaces to GMP, MPFR, MPIR, TomMath as well as its own collection of Boost-licensed, header-only back ends for integers, 
+rationals, floats and complex. In addition, user-defined back ends can be created and used with the interface of Multiprecision
+, provided the class implementation adheres to the necessary concepts.
+
+Depending upon the number type, precision may be arbitrarily large (limited only by available memory), fixed at compile time 
+(for example 50 or 100 decimal digits), or a variable controlled at run-time by member functions. The types are expression-template-enabled 
+for better performance than naive user-defined types. 
+
+The full documentation is available on [boost.org](http://www.boost.org/doc/libs/release/libs/multiprecision/index.html).
+
+## Support, bugs and feature requests ##
+
+Bugs and feature requests can be reported through the [Gitub issue tracker](https://github.com/boostorg/multiprecision/issues)
+(see [open issues](https://github.com/boostorg/multiprecision/issues) and
+[closed issues](https://github.com/boostorg/multiprecision/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aclosed)).
+
+You can submit your changes through a [pull request](https://github.com/boostorg/multiprecision/pulls).
+
+There is no mailing-list specific to Boost Multiprecision, although you can use the general-purpose Boost [mailing-list](http://lists.boost.org/mailman/listinfo.cgi/boost-users) using the tag [multiprecision].
+
+
+## Development ##
+
+Clone the whole boost project, which includes the individual Boost projects as submodules ([see boost+git doc](https://github.com/boostorg/boost/wiki/Getting-Started)): 
+
+    git clone https://github.com/boostorg/boost
+    cd boost
+    git submodule update --init
+
+The Boost Multiprecision Library is located in `libs/multiprecision/`. 
+
+### Running tests ###
+First, make sure you are in `libs/multiprecision/test`. 
+You can either run all the tests listed in `Jamfile.v2` or run a single test:
+
+    ../../../b2                        <- run all tests
+    ../../../b2 test_complex           <- single test
+