f6620f1152
* What is new in gsl-1.4: ** Added cumulative distribution functions and their inverses for the continuous random distributions including: gaussian, lognormal, gamma, beta, cauchy, laplace, chisq, exponential, gumbel, weibull, F-distribution, t-distribution, logistic, pareto and rayleigh. ** Added faster binomial random variates using the TPE rejection algorithm, in the function gsl_randist_binomial_tpe. ** Added new functions gsl_rng_fwrite and gsl_rnd_fread for storing the state of random number generators in a file. ** Added a new function gsl_combination_memcpy() ** Corrected values of electrical constants in CGS units. To take account of different electrical systems of units the values are now prefixed by GSL_CONST_MKSA (for the SI Metre, Kilogram, Second, Ampere system) or GSL_CONST_CGSM (for the Centimetre, Gram, Second, Magnetic system with the Gauss as the fundamental unit of magnetic field strength). The previous GSL_CONST_MKS and GSL_CONST_CGS prefixes have been removed, as have the permeability and permittivity constants in the CGS system since this uses different defining equations. ** Fixed bugs in the random number generators gsl_rng_fishman18, gsl_rng_fishman2x, and gsl_rng_knuthran2 which caused them to return incorrect results. Minor corrections were made to the parameters in the other Knuth generators borosh13, coveyou, fishman20, lecuyer21, and waterman14. ** Fixed a missing transpose bug in the gsl_linalg_QR_QRsolve and gsl_linalg_QRPT_QRsolve routines which were computing the solution to Q^T R x = b instead of Q R x = b. ** Fixed gsl_sf_gammainv to return zero instead of a domain error for arguments corresponding to singularities in gamma. ** Fixed a bug in the simplex minimization algorithm which caused it to fail to find the second highest point correctly when searching the set of simplex points. ** Fixed a bug in the conjugate gradient minimizers conjugate_pr, conjugate_fr and vector_bgfs which caused the search directions to be updated incorrectly. ** Fixed a bug in gsl_sf_psi_1_int(1) which caused it to return the incorrect sign for psi(1,1). ** Fixed the simulated annealing routine gsl_siman_solve to use the parameter iters_fixed_T for the number of iterations at fixed temperature instead of n_tries. ** Fixed a bug in gsl_combination_valid which caused it to return the incorrect status. ** Fixed a bug in gsl_permutation_canonical_to_linear which caused the output to always be zero, and the input permutation to be incorrectly replaced by the output. ** Fixed a bug is gsl_ran_discrete which could cause uninitialised data to be returned for some distributions. ** Fixed the dependencies for gsl_chebyshev.h to include gsl_math.h. ** Fixed a bug in gsl_complex_arccsc_real which caused it to return the incorrect sign for the imaginary part when -1<x<0. ** Fixed a bug in the QAWC Cauchy integration routine which could allow the singularity to fall on an interval boundary, leading to division by zero. ** Improved gsl_sf_gamma_inc_P(a,x) to avoid a domain error for x<<a when a>10. ** Improved the accuracy of gsl_sf_coupling_3j for large arguments. ** Improved the performance of gsl_sf_choose(m,n) by separating the calculations for small and large arguments. ** On platforms without IEEE comparisons gsl_{isnan,isinf,finite} will fall back to the system versions of isnan, isinf and finite if available. ** gsl_linalg_householder_hv now uses BLAS routines internally ** The script configure.in is now compatible with autoconf-2.50 and later. ** Reduced the memory usage of the multifit algorithms from MxM to MxN for large M by performing the QR decomposition of the Jacobian in-place. ** IEEE modes now use the C99 fenv.h functions when platform spectific functions are not available. |
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