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IMPORTANT: Mark C++03 support as deprecated and due for removal in 2021.
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Big update to cpp_int
adds faster Karatsuba and Coomba multiplication routines.
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Fix conversion of gmp_rational
to
long double
and __float128, fixes
#178.
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Fix up libtommath support to function with the latest libtom releases.
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Fix up some incompatibilities with the latest Intel C++ compiler.
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Fix up
constexpr arithmetic
support for forthcoming MSVC release.
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Big
constexpr update allows
cpp_int
and float128
arithmetic to be fully constexpr
with gcc and clang 9 or later, or any compiler supporting std::is_constant_evaluated().
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Support hexfloat io-formatting for float128.
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Fix various bugs in variable precision interconversions.
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Respect uppercase for '0x' prefix outputs.
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Incorporate some unit tests from the Etherium project.
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Fix some gcc warnings.
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Fix various conversion issues in the traits classes, check for compatibility
with Boost.Optional.
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Prevent instantiation of
std::numeric_limits
on any old type when checking for convertibility. See #98.
-
Update variable precision code to accound for arbitrary precision integers.
See #103.
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Add support for XML serialization archives.
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Fix bug in fixed precision iostream formatting in
mpf_float
and mpfr_float. See
#113.
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Add more overloads for special functions which are better handled natively
by MPFR.
-
Fixed bug in generic
exp
implementation which could cause invariant failure.
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Fixed generic conversion from float to integer to avoid undefined behaviour.
See #110.
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Big update to better support variable precision types so that the precision
of the result is always the largest of all the arguments.
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Add support for allocators that are
final
in cpp_int.
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Removed use of deprecated Boost.Endian in favour of Predef.
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Add support for
std::string_view.
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Fixed minor bug in constant initialization. See #67.
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Make assignment of non-finite value to
cpp_int
a runtime errors. See #58.
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Added typedefs for
cpp_bin_float_oct
and cpp_complex_oct.
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Support added for complex multiprecision numbers.
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Changed conversion to unsigned integer types to be truncating to match
standard defined behaviour.
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Correct bug in MPFR string formatting.
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Fix undefined behaviour in cpp_dec_float conversion from long long.
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Add support for Eigen interoperability.
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float128.hpp: Fix Intel on Windows build.
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Fix type used in temporaries when expanding expression templates containing
mixed expressions.
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Fix infinite loop in gmp_float to fixed-point string conversion.
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Update the expression templates to issue static_asserts with better error
messages when you try and do something unsupported.
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Fix bug in cpp_int where incrementing to zero doesn't set the sign correctly.
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Remove erroneous use of std::move, and rely on NVRO instead.
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Fix up support for changes to MPIR-3.0.
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Fix various conversion errors in cpp_bin_float when the exponent type
is a
long long,
or else we're converting to an integer that is wider than we are.
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Fix compatibility issue with GCC-8 caused by the introduction of
std::byte.
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Breaking Change: When converting a multiprecision
integer to a narrower type, if the value is too large (or negative) to
fit in the smaller type, then the result is either the maximum (or minimum)
value of the target type. This was always the intended behaviour, but
was somewhat haphazardly enforced before. If you really do want just
the low order N bits of a value, then you will need to mask these out
prior to the case, for example:
static_cast<unsigned>(~static_cast<unsigned>(0) & my_value).
Note that technically (to avoid undefined behaviour) you should do the
same thing with fundamental
(built-in) integer types too. See #13109.
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Fix bug in conversion of decimal to rational types (zero needs special
handling), see #13148.
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Fix conversion from cpp_bin_float to a wider fundamental
(built-in) integer type, see #13301.
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Improve performance heurists used in cpp_bin_float exp function.
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Fix bug in floor/ceil and cpp_bin_float when the exponent type is wider
than an int, see #13264.
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Disable explicit conversion operator when the target type is already
constructible from this type, see #30.
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Fix support for changes new to MPIR-3.0, see #13124.
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Updated expression templates to store arithmetic literals directly in
the expression template to prevent dangling references, see #19.
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Fix various issues with huge values and overflow in the trig, pow and
exp functions, see #24.
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Fix error handling of checked cpp_int multiply that could cause some
overflows to be missed.
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In
cpp_bin_float prevent
double rounding when converting to a denormalized float. See #12527.
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Fix bug in integer sqrt for very small integers. See #12559.
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Fix conversion to signed-zero in
cpp_bin_float.
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Change
cpp_bin_float
rounding code to round at arbitrary location so we can use it for conversions,
see #12527.
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Improve performance of 128-bit bit-scan operations.
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Fix subtraction of very small quantities in
cpp_bin_float.
See: #12580.
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Bring error handling into line with C99 Annex F. See #12581.
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Fix bitwise export of trivial
cpp_int's,
see #12627.
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Fix
ilogb (and code that
uses it) to consistently return the smallest value of the exponent type
when the argument is zero, see #12625.
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Allow conversion from
float128
to cpp_bin_float.
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Fix bug in left shift of
cpp_int
which would result in bit-loss, see #12790.
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Fixed bugs in bounded but variable precision
cpp_int's
caused by over-aggressive constexpr optimization, see #12798.
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Added support for all the C99 math functions.
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Extended generic-interconversions to handle narrowing cases as well,
changed convert_to member function and hence explicit conversion operators
to use the same conversion code as the explicit constructors.
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Fix IO stream parsing error, see #12488.
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Make default constructed floating point types all zero for consistency,
see #12500.
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Fix conversion of cpp_bin_float to float/double/long double when the
exponent value would overflow an int, see #12512.
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Fix cpp_bin_float subtractions that yield signed-zeros, see #12524.
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Fix ceil/trunc/round applied to cpp_bin_float and yielding a signed zero,
see #12525.
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Added support for hashing via
Boost.Hash
or std::hash.
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Fixed some arithmetic operations in cpp_bin_float and cpp_dec_float that
should generate a NaN, see #12157.
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Prevent inadvertant instantiation of variable-precision
mpfr_float_backend with fixed allocation.
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Fixed division over/underflow in cpp_bin_float, see #12167.
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Added support for signed-zeros throughout the library, including support
for
signbit and copysign, mpfr, float128, and cpp_bin_float
types should now respect signed-zeros correctly.
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Fixed bug in conversion of cpp_bin_float infinities to double etc, see
#12196.
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Fix add and subtract of cpp_bin_float when the exponents would overflow.,
see #12198.
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Improve variable-precision support in mpfr and mpf backends, allow these
types to be used with Boost.Math.
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Fixed bug in subtraction of signed infinities in cpp_bin_float, see
#12209.
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Fix result of sqrt(infinity) in cpp_bin_float (result should be infinity),
see #12227.
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Added workaround in gmp.hpp for recent MPIR releases which are not quite
source-compatible with GMP on Windows x64.
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Allow
cpp_int code to
be used with /RTCc with MSVC.
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Fix conversion of
cpp_int
to signed integer when the result is INT_MIN, see #12343.
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Update uBlas support to match latest uBlas code.
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Fix some errors present when building on big-endian machines (not all
cpp_int constructors
are available on non-little-endian machines).
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Fix fencepost error in rational to float conversion routines, see #12327.
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Fix some Oracle C++ compiler compatibility issues.
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Add modf support to complete C90 compatibility.
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Fix self assignment bug in expression template code for expressions such
as
a =
a *
a *
a, see #12408.
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Fixed some compiler errors that occur when converting from
cpp_int to cpp_bin_float.
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Fixed bug in stream input for integer types, see #11857.
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Fixed some ambiguous conversions involving expression templates see
#11922.
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Add expression template aware min/max overloads see #11149.
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Fix bug in right shifting negative small integers in cpp_int see #11999.
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Use memmove for bitshifts in cpp_int when possible see #9233.
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Use memcpy for data import into cpp_int where possible, see #9235.
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Changed
cpp_bin_float.convert_to<double>() to a function template rather than
proceding via long double
to avoid double-rounding bug, see #12039.
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Fixed conversions from NaNs and Infinities, see #12112.
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Enabled better support for Clang on Windows.
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Fixed handling of NaNs and Infinities in basic arithmetic for cpp_dec_float
and cpp_bin_float, see #12090.
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Fixed fencepost error in cpp_bin_float subtraction.
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Fixed double-rounding in conversion to float routines for cpp_bin_float,
see #12039.
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Make float128 denorm aware, see #12075.
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Allow the library and tests to be used without exception handling support,
see #12070.
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Fixed buggy comparison operator overloads for boost::rational.
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Added some workarounds for Oracle C++.
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Fixed some missing typecasts for cases where cpp_int's limb_type is wider
than unsigned.
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Fixed result of Miller Rabin primality test for value 2, see #11495.
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Improved initialization of cpp_int from very large strings of hex or
octal digits, see #11590.
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Fixed fmod behaviour for negative divisors, see #11641.
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Fixed infinite division loop in cpp_int special case, see #11648.
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Patched missing return statement in #11762.
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Fixed mixed mode arithmetic compiler error in #11764.
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Fixed over-aggressive use of noexcept in #11826.
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Depricated boost/multiprecision/random.hpp as it's no longer needed,
updated random examples to match.
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Fixed a bug in
cpp_int
right shift operator when shifting negative values - semantics now gives
the same values as shifting 2's compliment integers, though not the same
bit pattern.
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Fixed support for GCC-4.6.4 in C++0x mode by disabling conditional noexcept
suppoprt for that compiler see #11402.
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Suppressed numerous compiler warnings.
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Changed
frexp to always
be non-expression template generating, see: 10993.
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Improved support of cpp_dec_float on Cygwin and other platforms with
missing long double support, see 10924.
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Improved noexcept support and added some more tests, see 10990.
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Various workarounds applied for Intel-15.0 and Solaris-12.4 compilers.
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Changed rational to float conversions to exactly round to nearest, see
10085.
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Added improved generic float to rational conversions.
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Fixed rare bug in exponent function for cpp_bin_float.
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Fixed various minor documentation issues.
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Change floating-point to rational conversions to be implicit, see 10082.
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Fix definition of checked_cpp_rational typedef.
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Fix bug in assignment from string in cpp_int, see 9936.
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Moved to Boost.Multiprecision specific version number - we have one breaking
change in Boost-1.54 which makes this major version 2, plus two releases
with new features since then.
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Added new cpp_bin_float
backend for binary floating-point.
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Added MSVC-specific #include for compiler intrinsics, see 9336.
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Fixed various typos in docs, see 9432.
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Fixed gmp_rational
to allow move-copy from an already copied-from object, see 9497.
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Added list of values for numeric_limits.
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Added support for Boost.Serialization.
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Suppressed some GCC warnings. See 8872.
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Fixed bug in pow for large integer arguments. See 8809.
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Fixed bug in pow for calculation of 0N. See 8798.
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Fixed bug in fixed precision cpp_int IO code that causes conversion to
string to fail when the bit count is very small (less than CHAR_BIT).
See 8745.
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Fixed bug in cpp_int that causes left shift to fail when a fixed precision
type would overflow. See 8741.
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Fixed some cosmetic warnings from cpp_int. See 8748.
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Fixed calls to functions which are required to be macros in C99. See
8732.
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Fixed bug that causes construction from INT_MIN, LONG_MIN etc to fail
in cpp_int. See 8711.
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Breaking change renamed
rational_adapter to rational_adaptor.
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Add support for MPFI.
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Add logged_adaptor.
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Add support for 128-bit floats via GCC's
__float128
or Intel's _Quad data
types.
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Add support for user-defined literals in cpp_int, improve
constexpr support.
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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.
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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.
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Fixed bug in
cpp_int
where division of 0 by something doesn't get zero in the result: 8160.
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Fixed bug in some transcendental functions that caused incorrect return
values when variables are reused, for example with
a
= pow(a, b). See 8326.
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Fixed some assignment operations in the mpfr and gmp backends to be safe
if the target has been moved from: 8667.
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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.
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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 fundamental
(built-in) integer types.
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2011-2012, John Maddock adds an expression template enabled front-end
to Christopher's code, and adds support for other backends.
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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.
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2002-2011, Christopher Kormanyos develops the all C++ decimal arithmetic
floating-point code.
