*GNU Scientific Library 1.8 released@ 2006-04-11 14:39 Brian Gough0 siblings, 0 replies; only message in thread From: Brian Gough @ 2006-04-11 14:39 UTC (permalink / raw) To: info-gsl;+Cc:gsl-announce -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Version 1.8 of the GNU Scientific Library (GSL) is now available. GSL provides a large collection of functions for numerical computing in C. This is a maintenance release with bug fixes and performance improvements. Discrete cumulative distribution functions have also been added. The full NEWS file entry is appended below. The file details are: ftp://ftp.gnu.org/gnu/gsl/gsl-1.8.tar.gz (2.3 MB) ftp://ftp.gnu.org/gnu/gsl/gsl-1.8.tar.gz.sig (GPG signature) c60a5d193cc6b472496ff191744fc306 (MD5 checksum) The GSL project home page is at 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. - -- Brian Gough (GSL Maintainer) Network Theory Ltd Commercial support for GSL --- http://www.network-theory.com/gsl/ - ---------------------------------------------------------------------- * What is new in gsl-1.8: ** Added an error check to trap multifit calls with fewer observations than parameters. Previously calling the multifit routines with n<p would cause invalid memory access. ** Added the Debye unit to physical constants. ** Added cumulative distribution functions for the discrete distributions, including binomial, poisson, geometric, negative binomial, pascal and hypergeometric. ** Added the functions gsl_cdf_beta_{Pinv,Qinv} and gsl_cdf_fdist_{Pinv,Qinv} for computing the inverse of the cumulative beta and F distributions. ** Added the multilinear fit estimator function gsl_multifit_linear_est for computing model values and their errors. ** Avoid division by zero in gsl_multimin_fdfminimizer_vector_bfgs if the step-size becomes too small. ** Users on DEC Alpha systems will need to specify their desired IEEE arithmetic options via CFLAGS when building the library, as these are no longer added automatically. ** Added new random variate generators gsl_ran_gaussian_ziggurat and gsl_ran_gamma_mt for the Gaussian and Gamma distributions based on the Marsaglia-Tsang ziggurat and fast gamma methods. ** Improved the speed of the exponential power distribution gsl_ran_exppow. ** Improved the speed of the Gaussian ratio method by adding quadratic bounds in gsl_ran_gaussian_ratio_method. ** Added an extra term to the taylor series of the synchrotron functions gsl_sf_synchrotron_1 and gsl_sf_synchrotron_2 for small x to ensure smooth matching with the chebyshev expansion. ** The binomial pdf gsl_ran_binomial_pdf now handles the cases p=0 and p=1 and is more accurate for the case of small p with k=0. ** Fixed the spherical bessel function gsl_sf_bessel_jl_e) to limit the use of gsl_sf_bessel_Jnu_asympx_e to the range x>100*l*l to satisfy he requirement x>>l*l in the asymptotic expansion. ** The scaled bessel function gsl_sf_bessel_In_scaled now handles larger arguments x > 1e7 correctly for n < 150 using the uniform asymptotic expansion instead of the continued fraction expansion. ** The functions gsl_stats_min/max now return NaN if the data contains NaN. Similarly, the functions gsl_stats_min/max_index return the index of the first occurring NaN in the data when it contains a NaN. ** Fixed an invalid memory access that caused incorrect results for the special case in periodic cubic spline interpolation of 3 points. ** Added Debye functions for n=5 and n=6 ** Added the missing functions gsl_spline_name() and gsl_spline_min_size() ** The function gsl_rng_uniform_int(r,n) now returns an error for n=0, which can occur when passing an unsigned integer value of 2^32. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFEO7fTbiFv7WQGnVwRAh04AJ0ZOLuQXZpupIahkLuDyNMc8dE51ACcDBfN jnj3kdzF+ZtuJynZPMVvtdg= =vLH0 -----END PGP SIGNATURE----- ^ permalink raw reply [flat|nested] only message in thread

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