

Changelog
=========
 
Version 2.4.2 
------------- 
 
    **build fixes** 
 
    1) ICC/Windows: the optimized x86 build requires -fp-model=precise. 
 
    2) OS X: the linker requires -dynamiclib and -install_name for building 
       a shared library. 


Version 2.4.1
-------------

    **build fixes**

    1) The __uint128_t detection in ./configure has been fixed .  Failure to
       detect the option resulted in building the significantly slower ANSI
       target on non-x86/amd64 platforms.

    2) Use -fPIC instead of -fpic to fix a build failure on SPARC platforms.

    3) Split the tests into a faster "make check" and a slower "make check_alloc".
       The latter tests allocation failures but is too slow on older machines.

    4) Generate detailed test output for better feedback on slower machines.

    5) The static library is now built without -fPIC, which is significantly
       faster at least on x86.  Both the static and the shared library are
       now tested separately.

    **bug fixes**

    1) PEP 3101 formatting:  With the '%' format type, a trailing percent sign
       is now also added for infinities and NaNs.


Version 2.4.0
-------------

    **features**

    1) Faster integer to string conversion.

    2) mpd_qln(), mpd_qlog10() and mpd_pow() are now thread-safe.

    3) All functions that take or return C integers are now available in
       both the 64-bit and the 32-bit builds.

    4) Support for cross-compiling.

    5) Scripts for Visual Studio builds.

    **code improvements**

    1) This version is exactly the same as the version shipped with Python-3.3+.
       Large portions of the code have been refactored in order to facilitate
       proofs.  Many ACL2 proofs have been added.

    **removed**

    1) The Python module has been removed from mpdecimal, since both libmpdec
       and cdecimal are included in Python-3.3+.

    2) The large test suite against decNumber as well as the multi-precision
       tests against gmp have been removed, but will be available in a separate
       package.  Naturally these tests are still run as part of the release
       process.


Version 2.3
-----------

    **features**

    1) New test suite with comprehensive tests against decNumber.

    2) Full support for compilers without uint64_t (tested with CompCert).

    **bug fixes**

    1) If ROUND_FLOOR is set and the operand is zero, the functions
       mpd_plus() and mpd_minus() have special cases for the sign of
       the result.


Version 2.2
-----------

    **build process**

    1) configure: append CFLAGS to CONFIG flags.

    2) Makefile: use includedir, libdir, datarootdir, datadir, docdir, DESTDIR.

    **workarounds for toolchain bugs**

    1) Enable workaround for a gcc miscompilation. See:

           `http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491>`_

    2) Enable workaround for the glibc _FORTIFY_SOURCE/memmove bug, which is
       exposed by gcc-4.6. See:

           `http://sourceware.org/ml/libc-alpha/2010-12/msg00009.html <http://sourceware.org/ml/libc-alpha/2010-12/msg00009.html>`_

    **features**

    1) Make PPRO inline assembly PIC-compliant (for the dynamic library).


Version 2.1
-----------

Version 2.1 was never released, but escaped into the wild via the Makefile
and setup.py in cdecimal-1.97-rc2.tar.gz. Both files already had that version
number.

    **features**

    1) Code coverage increased to 100%. This includes every possible
       allocation failure.

    2) Switch build process to ./configure.

    3) Makefile targets for creating coverage reports.

    **bug fixes**

    1) mpd_qget_uint, mpd_qget_u64, mpd_qget_u32 did not raise for
       negative input.

    2) Handle allocation failures in _mpd_fntmul under extreme conditions.



Version 1.2.1
-------------

    **bug fixes**

    1) With MACHINE=ansi64, the macros BSR and BSF used x86 assembly.
       This caused compilation to fail on non-x64 platforms.


Version 1.2
-----------

    **features**

    1) Support for compilers with __uint128_t
       (option MACHINE=ansi64).

    2) Support for other 64-bit compilers
       (option MACHINE=ansi64c32).

    3) Support for legacy compilers without uint64_t
       (option MACHINE=ansi-legacy).

    4) Slightly different build process (please read INSTALL.txt).

    5) If clamp=1, the maximum payload length of a NaN is prec-1.

    **bug fixes**

    1) Fix for mpd_qround_to_int, which did not handle digits
       exceeding the context precision correctly in all cases.

    2) In rare corner cases Underflow was not set in
       transcendental functions.



