2006-03-26  Brian Gough  <bjg@network-theory.co.uk>	* multinomial.c (gsl_ran_multinomial_lnpdf): use gsl_sf_lnfact	instead of gsl_sf_lngamma for an integer argument2006-03-17  Brian Gough  <bjg@network-theory.co.uk>	* binomial_tpe.c (gsl_ran_binomial): cast return values to	unsigned2006-02-27  Brian Gough  <bjg@network-theory.co.uk>	* beta.c (gsl_ran_beta_pdf): work with logs avoid	underflow/overflow2006-02-19  Brian Gough  <bjg@network-theory.co.uk>	* gauss.c (gsl_ran_gaussian): reject case where x=-1 || y=-1	for true symmetry	(gsl_ran_gaussian_ratio_method): add Leva bounds	* exppow.c (gsl_ran_exppow): added faster rejection methods2006-02-01  Brian Gough  <bjg@network-theory.co.uk>	* gausszig.c: added ziggurat gaussian (Jochen Voss)2006-01-20  Brian Gough  <bjg@network-theory.co.uk>	* binomial.c (gsl_ran_binomial_pdf): handle the cases p=0 and p=1	(gsl_ran_binomial_pdf): use log1p to calculate more accurately	near k=0,p=02005-08-31  Brian Gough  <bjg@network-theory.co.uk>	* test.c (main): free allocated memory before exit2005-08-22  Brian Gough  <bjg@network-theory.co.uk>	* binomial_tpe.c (gsl_ran_binomial): switch to the TPE algorithm	as the default	* binomial.c (gsl_ran_binomial_knuth): rename the original	binomial function to ..._knuth2004-05-30  Brian Gough  <bjg@network-theory.co.uk>	* landau.c (gsl_ran_landau): fix potential array bounds overflow	by extending array.2004-04-22  Brian Gough  <bjg@network-theory.co.uk>	* sphere.c (gsl_ran_dir_3d): removed unnecessary check for s==0.02003-07-25  Brian Gough  <bjg@network-theory.co.uk>	* dirichlet.c: include gsl_sf_gamma.h instead of gsl_sf.h2003-07-24  Brian Gough  <bjg@network-theory.co.uk>	* binomial_tpe.c (gsl_ran_binomial_tpe): convert to double to	avoid possible signed/unsigned problems in comparison (ix > n)	(Stirling): removed spurious trailing ;2003-05-14  Brian Gough  <bjg@network-theory.co.uk>	* binomial_tpe.c: fast binomial algorithm using TPE method	* test.c: added the tests for the fast Binomial TPE routine2003-02-09  Brian Gough  <bjg@network-theory.co.uk>	* discrete.c (gsl_ran_discrete_preproc): fixed bug reported by	ahoward <ahoward@pollux.usc.edu>2003-01-25  Brian Gough  <brian.gough@network-theory.co.uk>	* chisq.c: corrected comments2002-12-10  Brian Gough  <bjg@network-theory.co.uk>	* multinomial.c (gsl_ran_multinomial): added multinomial	distribution	* dirichlet.c (gsl_ran_dirichlet_lnpdf): added logpdf function for	accuracyTue Aug 27 19:08:33 2002  Brian Gough  <bjg@network-theory.co.uk>	* dirichlet.c: added dirichlet distributionSat Aug 18 22:21:07 2001  Brian Gough  <bjg@network-theory.co.uk>	* gsl-randist.c: moved to top-level directoryWed Jul 18 12:57:55 2001  Brian Gough  <bjg@network-theory.co.uk>	* landau.c: added Landau distribution from Dave MorrisonSat Jun 23 12:30:38 2001  Brian Gough  <bjg@network-theory.co.uk>	* gausstail.c (gsl_ran_gaussian_tail): allow negative values for 	the tail cutoff parameter.Mon May 21 12:17:07 2001  Brian Gough  <bjg@network-theory.co.uk>	* shuffle.c (gsl_ran_choose): removed void * return value	(gsl_ran_sample): removed void * return valueTue Apr 24 17:10:47 2001  Brian Gough  <bjg@network-theory.co.uk>	* bernoulli.c (gsl_ran_bernoulli_pdf): removed unnecessary 	reference to gsl_sf.hMon Apr 23 10:25:44 2001  Brian Gough  <bjg@network-theory.co.uk>	* changed calls to old specfunc _impl functions to use new error 	handling conventionsTue Apr 17 19:57:59 2001  Brian Gough  <bjg@network-theory.co.uk>	* weibull.c (gsl_ran_weibull): changed parameter mu to a, since it 	is not the mean	(gsl_ran_weibull_pdf): changed parameter mu to a, since it 	is not the mean	* logistic.c (gsl_ran_logistic): changed parameter mu to a, since it 	is not the mean	(gsl_ran_logistic_pdf): changed parameter mu to a, since it 	is not the mean	* laplace.c (gsl_ran_laplace): changed parameter mu to a, since it 	is not the mean	(gsl_ran_laplace_pdf): changed parameter mu to a, since it 	is not the mean	* exppow.c (gsl_ran_exppow): changed parameter mu to a, since it 	is not the mean	(gsl_ran_exppow_pdf): changed parameter mu to a, since it 	is not the mean	* cauchy.c (gsl_ran_cauchy): changed parameter mu to a, since it 	is not the mean	(gsl_ran_cauchy_pdf): changed parameter mu to a, since it 	is not the meanTue Feb 20 11:14:00 2001  Brian Gough  <bjg@network-theory.co.uk>	* levy.c: added the skew symmetric routine from Keith Briggs, 	changed the definition of the original function to match and not 	use mu as a scale parameter.2000-10-17  Brian Gough  <bjg@inweb.aethos.co.uk>	* shuffle.c (gsl_ran_shuffle): replaced calls of the form	N*gsl_rng_uniform(r) with the integer form gsl_rng_uniform(r, N)Thu Sep 21 18:41:53 2000  Brian Gough  <bjg@network-theory.co.uk>	* pareto.c (gsl_ran_pareto): made arguments and documentation 	consistentWed May 10 14:55:43 2000  Brian Gough  <bjg@network-theory.co.uk>	* gsl-randist.c (main): fixed bug for lognormal (it was calling 	exppow)  Tadhg O'Meara <tadhg@net-cs.ucd.ie>	* gsl-randist.c (main): print out all the dimensions for dir-nd, 	not just the firstTue Apr 25 20:45:14 2000  Brian Gough  <bjg@network-theory.co.uk>	* shuffle.c (gsl_ran_sample): lifted the restriction that sampling 	with replacement could only be done less than n times for n objects.Tue Mar 14 21:31:46 2000  Brian Gough  <bjg@network-theory.co.uk>	* logistic.c (gsl_ran_logistic_pdf): prevent overflow in 	computation of pdf for x < 0Thu Oct  7 12:55:40 1999  Brian Gough  <bjg@network-theory.co.uk>	* discrete.c (gsl_ran_discrete_free): removed unreachable code 	"return 0";Fri Aug  6 16:02:08 1999  Brian Gough  <bjg@network-theory.co.uk>	* sphere.c (gsl_ran_dir_nd): number of dimensions is now unsigned 	(size_t)	* logarithmic.c (gsl_ran_logarithmic_pdf): removed warning about 	passing arg 2 of `pow' as floating rather than integer due to 	prototypeSun Aug  1 20:29:43 1999  Brian Gough  <bjg@network-theory.co.uk>	* discrete.c: converted to GSL_ERROR macros for error handlingTue Jul 27 14:14:38 1999  Brian Gough  <bjg@network-theory.co.uk>	* sphere.c (gsl_ran_dir_3d): use the Knop method only -- it is the 	best.	(gsl_ran_dir_2d_trig_method): split out the trig method as an 	alternative for those platforms where it is faster	* bigauss.c: split out the bivariate gaussian into its own source	file1999-06-30  Mark Galassi  <rosalia@lanl.gov>	* discrete.c: (thanks to Frederick W. Wheeler	<wheeler@cipr.rpi.edu>) changed the type stack_t to gsl_stack_t to	avoid a conflict on HPUX.Sun Feb 28 20:41:18 1999  Brian Gough  <bjg@netsci.freeserve.co.uk>	* gsl-randist.c (main): change cfree() to free(), which is 	standard.	* discrete.c (gsl_ran_discrete_preproc): removed warning, pTotal 	is now initialized to zero.1999-01-31  James Theiler <jt@lanl.gov>	* gauss.c added a new function gsl_ran_ugaussian_tail() which	provides random numbers out on the tail of a gaussian.  I also	added (but then #ifdef'd out) a second implementation of ordinary	gaussian numbers.  This second implementation passes the tests	okay, but it is a touch slower on my home Pentium.	* gsl_randist.h added prototypes	* test.c added tests for new gaussian tail function; also altered	testMoment's ugaussian range (-1,1) value from .68 to a more	accurate value.	* ../doc/random.texi further updated 	1999-01-30  James Theiler <jt@lanl.gov>	* discrete.c added implementation of Walker's algorithm for	rapidly choosing a random integer k where the k's are distributed	by a user-supplied array of probabilities P[k].  This includes	functions gsl_ran_discrete(), gsl_ran_discrete_preproc(), 	gsl_ran_discrete_free(), and gsl_ran_discrete_pdf().	* gsl_randist.h added definition of structure gsl_ran_discrete_t,	also prototypes of new functions defined in discrete.c	* test.c added tests for gsl_ran_discrete(), also	* test.c made some essentially cosmetic changes:	1/ redefined FUNC and FUNC2 macros so now output looks like 	"test gsl_ran_poisson" instead of "gsl_ran_test_poisson"	2/ changed names of toplevel tests, eg test_moments->testMoments, 	test_pdf->testPDF, etc, to distinguish them from all the individual 	functions test_poisson, test_binomial, etc.	hope that's ok.	* ../doc/random.texi updated to reflect the new discrete functions,	as well as the new implementations of the sphere.c routines.1999-01-28  James Theiler <jt@lanl.gov>	* sphere.c modified gsl_ran_dir_3d, to speed it up about 2x	also modified gsl_ran_dir_2d, providing alternative algorithms 	(#ifdef'd appropriately).  which is faster is machine dependent.	also gsl_ran_dir_nd for n-dimensional direction, using	gaussian random variables, normalized to the unit sphere	also added ref's to Knuth and others describing the algorithms		* gsl_randist.h added gsl_ran_dir_nd() prototype	* gsl-randist.c added dir-nd optionTue Dec 15 23:08:57 1998  Brian Gough  <bjg@vvv.lanl.gov>	* updated all the functions depending on gsl_sf to use the new 	special function interface, based on gsl_sf_resultTue Nov 17 17:02:54 1998  Brian Gough  <bjg@vvv.lanl.gov>	* added #include <config.h> to all top-level source files1998-11-06    <bjg@ancho.lanl.gov>	* test.c: ensured that M_PI is available by #include <gsl_math.h>Wed Sep 16 14:44:08 1998  Brian Gough  <bjg@vvv.lanl.gov>	* rayleigh.c: added rayleigh tail distributionSat Sep 12 13:03:19 1998  Brian Gough  <bjg@vvv.lanl.gov>	* rayleigh.c: added rayleigh distributionMon Aug 31                James Theiler <jt@lanl.gov>	* Makefile.am: added ../utils/libutils.a to some LDADD'sMon Aug 17 14:31:55 1998  Brian Gough  <bjg@vvv.lanl.gov>	* gsl_randist.h: renamed discrete probability distribution 	parameters to use consistent k,n notation (k = sample, n = total, 	e.g. p(k) = function(k,n) )Wed Aug 12 14:02:31 1998  Brian Gough  <bjg@vvv.lanl.gov>	* lognormal.c: added zeta and sigma (location and scale parameters)	* logarithmic.c (gsl_ran_logarithmic): added logarithmic distributionMon Aug 10 14:41:15 1998  Brian Gough  <bjg@vvv.lanl.gov>	* gsl-randist.c: added random direction functions	* gamma.c: added the scale paramter for  the gamma distributionThu Aug  6 12:19:59 1998  Brian Gough  <bjg@vvv.lanl.gov>	* gauss.c (gsl_ran_bivariate_gaussian): added bivariate with 	correlations.	* hyperg.c: renamed variables, fixed bugWed Aug  5 11:21:45 1998  Brian Gough  <bjg@vvv.lanl.gov>	* gsl-dist.c: renamed gsl-dist.c to gsl-randist.c, for 	consistencyTue Aug  4 12:29:17 1998  Brian Gough  <bjg@vvv.lanl.gov>	* gsl-dist.c: a program for generating samples from the  	distributions	* levy.c (gsl_ran_levy): take care of special case, a=1	* logistic.c: allow scale parameter, mu	* weibull.c: allow scale parameter, mu	* pareto.c: allow scale parameter, mu	* exppow.c: handle the case a<1 using a transformation of the 	gamma distribution.	* gamma.c (gsl_ran_gamma_int): removed the check for 	GSL_LOGINIFINITY since underflow can't occur for 32-bit random 	numbers in double precision.Mon Aug  3 13:09:39 1998  Brian Gough  <bjg@vvv.lanl.gov>	* test.c: added tests for shuffle and choose	* pascal.c: added the Pascal distribution	* hyperg.c: added the hypergeometric distributionFri Jul 31 12:52:12 1998  Brian Gough  <bjg@vvv.lanl.gov>	* gsl_randist.h: renamed gsl_ran_two_sided_exponential to 	gsl_ran_laplace1998-07-26  Mark Galassi  <rosalia@cygnus.com>	* Makefile.am (INCLUDES): added -I$(top_srcdir), since gsl_math.h	is needed, and that is in the top level source directory.  This is	necessary for using a separate build directory.Tue Jul 14 12:39:30 1998  Brian Gough  <bjg@vvv.lanl.gov>	* nbinomial.c: added Negative Binomial distribution	* bernoulli.c: added Bernoulli distribution	* poisson.c (gsl_ran_poisson): fixed a serious bug in the unrolled 	recursion which led to an incorrect result being returned for the 	large t case. This shows the importance of tests that cover all 	possible branches!!!	* erlang.c (gsl_ran_erlang_pdf): renamed mu to a for consistencyThu Jul  2 15:47:05 1998  Brian Gough  <bjg@vvv.lanl.gov>	* added some extra distributions, lognormal.c gaussian.c 	logistic.c pareto.c geometric.c erlang.c chisq.c weibull.c,	although they aren't finished yetWed Jul  1 11:56:06 1998  Brian Gough  <bjg@vvv.lanl.gov>	* replace do { u = gsl_rng_uniform(r) } while (u == 0) by a direct 	call to gsl_rng_uniform_pos.Sun Jun 28 14:21:13 1998  Brian Gough  <bjg@vvv.lanl.gov>	* converted everything to work with rng style generatorsSun Apr 19 19:06:59 1998  Brian Gough  <bjg@vvv.lanl.gov>	* made the 'gsl-dist' programs just output a single column of 	their random numbers (previously some of the programs printed both 	the uniform variate and the transformed number)	* got rid of the 'bench-' programs. We will have a full testing 	suite soon.	* renamed the installed programs from 'dist' to 'gsl-dist' so that 	they don't overwrite anything, e.g. it's possible the user might 	have other programs called 'gauss' or 'gamma' installed in 	/usr/localSat Mar 21 16:09:16 1998  Brian Gough  <bjg@vvv.lanl.gov>	* laplace.c (gsl_ran_laplace): added a Laplace distribution	(two-sided exponential)		* lorentz.c (gsl_ran_lorentzian): added a Lorentz distribution	1998-01-30  Mark Galassi  <rosalia@cygnus.com>	* Makefile.am (lib_LIBRARIES): now it creates libgslrandist.a so	that we have gaussian and poisson distributions.