GNU Scientific Library 2.0 released

From: Patrick Alken Subject: GNU Scientific Library 2.0 released Date: Sat, 31 Oct 2015 16:00:39 -0600 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

Version 2.0 of the GNU Scientific Library (GSL) is now available. GSL provides a large collection of routines for numerical computing in C. The major version number was increased, since a number of internal workspaces have changed and so existing binaries must be recompiled against this new library. There are also a small number of API changes and deprecated functions. This release includes significant new features and bug fixes: * Sparse matrices * Regularized least squares * 2D interpolation * New nonlinear least squares solver The full NEWS file entry is appended below. The file details for this release are: ftp://ftp.gnu.org/gnu/gsl/gsl-2.0.tar.gz ftp://ftp.gnu.org/gnu/gsl/gsl-2.0.tar.gz.sig The GSL project homepage is http://www.gnu.org/software/gsl/ GSL is free software distributed under the GNU General Public License. Thanks to everyone who reported bugs and contributed improvements. Patrick Alken ================== * What is new in gsl-2.0: ** fixed bug #43258 for hypergeometric functions (Raymond Rogers) ** added L-curve analysis routines for linear Tikhonov regression ** add running statistics module ** added bilinear and bicubic interpolation (David Zaslavsky) ** added function gsl_multifit_robust_residuals to compute robust fit residuals ** added Steffen monotonic interpolation method (Jean-FranÃ§ois Caron) ** added new nonlinear least squares solver 'lmniel' suitable for systems with large numbers of data ** nonlinear least squares solver now tracks the number of function and Jacobian evaluations, see example program for details ** the 'fdf' field of gsl_multifit_function_fdf is now deprecated and does not need to be specified for nonlinear least squares problems ** added extensive test suite to nonlinear least squares module, resulting in a few minor bug fixes; the routine gsl_multifit_fdfsolver_driver has been rewritten (with API change) to handle the various error codes of the lmsder iterate routine, resulting in a high level caller which is highly robust for a wide class of problems ** added support for sparse matrices, including a GMRES iterative linear solver ** added routines gsl_linalg_givens and gsl_linalg_givens_gv for Givens rotations ** added Tikhonov (ridge) regularization to least squares module (linear and nonlinear) ** removed unused argument 'n' from gsl_sf_ellint_D ** merged bspline_deriv_workspace into bspline_workspace to simplify bspline API; the functions gsl_bspline_deriv_alloc gsl_bspline_deriv_free are now deprecated and will be removed in a future release. ** merged ALF extension into GSL for associated Legendre functions; api has changed; consequently the functions: gsl_sf_legendre_Plm_array gsl_sf_legendre_Plm_deriv_array gsl_sf_legendre_sphPlm_array gsl_sf_legendre_sphPlm_deriv_array gsl_sf_legendre_array_size are now deprecated and will be removed in a future release. ** added function gsl_multifit_robust_weights to allow user to access the various weighting functions

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