History

Breaking change renamed rational_adapter to rational_adaptor.
Add support for MPFI.
Add logged_adaptor.
Add support for 128-bit floats via GCC's __float128 or Intel's _Quad data types.
Add support for user-defined literals in cpp_int, improve constexpr support.
Fixed bug in integer division of cpp_int that results in incorrect sign of cpp_int when both arguments are small enough to fit in a double_limb_type. See 8126.
Fixed bug in subtraction of a single limb in cpp_int that results in incorrect value when the result should have a 0 in the last limb: 8133.
Fixed bug in cpp_int where division of 0 by something doesn't get zero in the result: 8160.
Fixed bug in some transcendental functions that caused incorrect return values when variables are reused, for example with a = pow(a, b). See 8326.
Fixed some assignment operations in the mpfr and gmp backends to be safe if the target has been moved from: 8667.
Fixed bug in cpp_int that gives incorrect answer for 0%N for large N: 8670.
Fixed set_precision in mpfr backend so it doesn't trample over an existing value: 8692.

Non-expression template operators further optimised with rvalue reference support.
Many functions made constexp.
Differentiate between explicit and implicit conversions in the number constructor.
Removed "mp_" prefix from types.
Allowed mixed precision arithmetic.
Changed ExpressionTemplates parameter to class number to use enumerated values rather than true/false.
Changed ExpressionTemplate parameter default value to use a traits class so that the default value depends on the backend used.
Added support for fused-multiply-add/subtract with GMP support.
Tweaked expression template unpacking to use fewer temporaries when the LHS also appears in the RHS.
Refactored cpp_int_backend based on review comments with new template parameter structure.
Added additional template parameter to mpfr_float_backend to allow stack-based allocation.
Added section on mixed precision arithmetic, and added support for operations yielding a higher precision result than either of the arguments.
Added overloads of integer-specific functions for built in integer types.

2011-2012, John Maddock adds an expression template enabled front end to Christopher's code, and adds support for other backends.
2011, Christopher Kormanyos publishes the decimal floating point code under the Boost Software Licence. The code is published as: "Algorithm 910: A Portable C++ Multiple-Precision System for Special-Function Calculations", in ACM TOMS, {VOL 37, ISSUE 4, (February 2011)} (C) ACM, 2011.
2002-2011, Christopher Kormanyos develops the all C++ decimal arithmetic floating point code.

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