Currently open bug reports can be viewed here.
All bug reports including closed ones can be viewed here.

Fixed issues #7325,
#7415
and #7416,
#7183,
#7649,
#7694,
#4445,
#7492,
#7891,
#7429.

Fixed mistake in calculating pooled standard deviation in twosample
students t example #7402.

Improve complex acos/asin/atan, see #7290,
#7291.

Improve accuracy in some corner cases of cyl_bessel_j
and gamma_p/gamma_q thanks
to suggestions from Rocco Romeo.

Corrected moments for small degrees of freedom #7177
(reported by Thomas Mang).

Added Airy functions
and Jacobi Elliptic functions.

Corrected failure to detect bad parameters in many distributions #6934 (reported
by Florian Schoppmann) by adding a function check_out_of_range to test
many possible bad parameters. This test revealed several distributions
where the checks for bad parameters were ineffective, and these have
been rectified.

Fixed issue in Hankel functions that causes incorrect values to be returned
for x < 0 and ν odd, see #7135.

Fixed issues #6517,
#6362,
#7053,
#2693,
#6937,
#7099.

Permitted infinite degrees of freedom #7259
implemented using the normal distribution (requested by Thomas Mang).

Much enhanced accuracy for large degrees of freedom ν and/or large noncentrality
δ
by switching to use the Students t distribution (or Normal distribution
for infinite degrees of freedom) centered at delta, when δ / (4 * ν) <
epsilon for the floatingpoint type in use. #7259.
It was found that the incomplete beta was suffering from serious cancellation
errors when degrees of freedom was very large. (That has now been fixed
in our code, but any code based on Didonato and Morris's original papers
(probably every implementation out there actually) will have the same
issue).
See Boost1.52  some items were added but not listed in time for the release.

Promoted math constants to be 1st class citizens, including convenient
access to the most widely used builtin float, double, long double via
three namespaces.

Added the Owen's T function and Skew Normal distribution written by Benjamin
Sobotta: see Owens T
and skew_normal_distrib.

Added Hankel functions cyl_hankel_1,
cyl_hankel_2,
sph_hankel_1
and sph_hankel_2.

Corrected issue #6627
nonfinite_num_put formatting of 0.0 is incorrect based on a patch
submitted by K R Walker.

Changed constant initialization mechanism so that it is thread safe even
for userdefined types, also so that user defined types get the full
precision of the constant, even when
long
double
does not. So for example
128bit rational approximations will work with UDT's and do the right
thing, even though long double
may be only 64 or 80 bits.

Fixed issue in
bessel_jy
which causes Y_{8.5}(4π) to yield a NaN.

Deprecated wrongly named
twothirds
math constant in favour of two_thirds
(with underscore separator). (issue #6199).

Refactored test data and some special function code to improve support
for arbitary precision and/or expressiontemplateenabled types.

Added new faster zeta function evaluation method.
Fixed issues:

Corrected CDF complement for Laplace distribution (issue #6151).

Corrected branch cuts on the complex inverse trig functions, to handle
signed zeros (issue #6171).

Fixed bug in
bessel_yn
which caused incorrect overflow errors to be raised for negative n
(issue #6367).

Also fixed minor/cosmetic/configuration issues #6120,
#6191,
#5982,
#6130,
#6234,
#6307,
#6192.

Added new series evaluation methods to the cyclic Bessel I, J, K and
Y functions. Also taken great care to avoid spurious over and underflow
of these functions. Fixes issue #5560

Added an example of using Inverse ChiSquared distribution for Bayesian
statistics, provided by Thomas Mang.

Added tests to use improved version of lexical_cast which handles C99
nonfinites without using globale facets.

Corrected wrong outofbound uniform distribution CDF complement values
#5733.

Enabled long double support on OpenBSD (issue #6014).

Changed nextafter and related functions to behave in the same way as
other implementations  so that nextafter(+INF, 0) is a finite value
(issue #5832).

Changed tuple include configuration to fix issue when using in conjunction
with Boost.Tr1 (issue #5934).

Changed class eps_tolerance to behave correctly when both ends of the
range are zero (issue #6001).

Fixed missing include guards on prime.hpp (issue #5927).

Removed unused/undocumented constants from constants.hpp (issue #5982).

Fixed missing std:: prefix in nonfinite_num_facets.hpp (issue #5914).

Minor patches for Cray compiler compatibility.

Added changesign function to sign.hpp to facilitate addition of nonfinite
facets.

Addition of nonfinite facets from Johan Rade, with tests, examples of
use for C99 format infinity and NaN, and documentation.

Added tests and documentation of changesign from Johan Rade.

Added Wald, Inverse Gaussian and geometric distributions.

Added information about configuration macros.

Added support for mpreal as a realnumbered type.

Added warnings about potential ambiguity with std random library in distribution
and function names.

Added inverse gamma distribution and inverse chi_square and scaled inverse
chi_square.

Editorial revision of documentation, and added FAQ.

Fixed incorrect range and support for Rayleigh distribution.

Fixed numerical error in the quantile of the Student's T distribution:
the function was returning garbage values for noninteger degrees of
freedom between 2 and 3.

Significantly improved performance for the incomplete gamma function
and its inverse.

Added support for MPFR as a bignum type.

Added some full specializations of the policy classes to reduce compile
times.

Added logistic and hypergeometric distributions, from Gautam Sewani's
Google Summer of Code project.

Added Laplace distribution submitted by Thijs van den Berg.

Updated performance test code to include new distributions, and improved
the performance of the noncentral distributions.

Added SSE2 optimised Lanczos
approximation code, from Gautam Sewani's Google Summer of Code
project.

Fixed bug in cyl_bessel_i that used an incorrect approximation for ν =
0.5, also effects the noncentral Chi Square Distribution when ν = 3, see
bug report #2877.

Fixed minor bugs #2873.

Added Johan Råde's optimised floating point classification routines.

Fixed code so that it compiles in GCC's pedantic mode (bug report #1451).

Improved accuracy and testing of the inverse hypergeometric functions.

Added Noncentral Chi Squared Distribution.

Added Noncentral Beta Distribution.

Added Noncentral F Distribution.

Added Noncentral T Distribution.

Added Exponential Integral Functions.

Added Zeta Function.

Added Rounding and Truncation functions.

Added Compile time powers of runtime bases.

Added SSE2 optimizations for Lanczos evaluation.

Added Policy based framework that allows fine grained control over function
behaviour.

Breaking change: Changed default behaviour
for domain, pole and overflow errors to throw an exception (based on
review feedback), this behaviour can be customised using Policy's.

Breaking change: Changed exception thrown
when an internal evaluation error occurs to boost::math::evaluation_error.

Breaking change: Changed discrete quantiles
to return an integer result: this is anything up to 20 times faster than
finding the true root, this behaviour can be customised using Policy's.

Polynomial/rational function evaluation is now customisable and hopefully
faster than before.

Added performance test program.

Moved Xiaogang Zhang's Bessel Functions code into the library, and brought
them into line with the rest of the code.

Added C# "Distribution Explorer" demo application.

Implemented the main probability distribution and density functions.

Implemented digamma.

Added more factorial functions.

Implemented the Hermite, Legendre and Laguerre polynomials plus the spherical
harmonic functions from TR1.

Moved Xiaogang Zhang's elliptic integral code into the library, and brought
them into line with the rest of the code.

Moved Hubert Holin's existing Boost.Math special functions into this
library and brought them into line with the rest of the code.

Implement preview release of the statistical distributions.

Added statistical distributions tutorial.

Implemented root finding algorithms.

Implemented the inverses of the incomplete gamma and beta functions.

Rewrite erf/erfc as rational approximations (valid to 128bit precision).

Integrated the statistical results generated from the test data with
Boost.Test: uses a database of expected results, indexed by test, floating
point type, platform, and compiler.

Improved lgamma near 1 and 2 (rational approximations).

Improved erf/erfc inverses (rational approximations).

Implemented Rational function generation (the Remez method).

Implement gamma/beta/erf functions along with their incomplete counterparts.

Generate high quality test data, against which future improvements can
be judged.

Provide tools for the evaluation of infinite series, continued fractions,
and rational functions.

Provide tools for testing against tabulated test data, and collecting
statistics on error rates.

Provide sufficient docs for people to be able to find their way around
the library.
SVN Revisions:
Sandbox and trunk last synchonised at revision: .