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GNU Scientific Library 1.12 released

Item posted by Brian Gough <bjg> on Tue 16 Dec 2008 10:12:55 AM UTC.

Version 1.12 of the GNU Scientific Library (GSL) is now available. GSL provides a large collection of routines for numerical computing in C.

This is a maintenance release, which fixes reported bugs and upgrades the build system to the latest libtool, autoconf and automake. The full NEWS file entry is appended below.

The file details are:

ftp://ftp.gnu.org/gnu/gsl/gsl-1.12.tar.gz (2.8 MB)
ftp://ftp.gnu.org/gnu/gsl/gsl-1.12.tar.gz.sig (GPG signature)
3b5cba13f4b90e1473f693a5dc7efdcaae55fc46 (sha1 checksum)

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.

Brian Gough
(GSL Maintainer)

What is new in gsl-1.12:

  • Upgraded to latest libtool, autoconf and automake (libtool-2.2.6, autoconf-2.63, automake-1.10.2)
  • Improved the convergence of gsl_sf_gamma_inc_P for x/a ~=~ 1 and large x,a. Fixes problems with large arguments in cdf functions such as gsl_cdf_chisq_Pinv(x,nu) [bug 24704].
  • Fixed gsl_ran_gamma_knuth to handle the case of a >= UINT_MAX [bug #24897]
  • Added gsl_bspline_eval_deriv to compute bspline derivatives (Rhys Ulerich)
  • Added a faster simplex mininimser gsl_multimin_fminimizer_nmsimplex2 which is O(N) instead of O(N^2) [bug #24418]
  • Improved the original chi-squared formula in gsl_monte_vegas to avoid catastrophic cancellation [bug #24510]. The previous formula could return incorrect or negative values for relative errors < 1e-8, which could occur when integrating very smooth functions.
  • Added new auxiliary functions gsl_cheb_order, gsl_cheb_size, gsl_cheb_coeffs for Chebyshev series [bug #21830]
  • Updated license of the reference manual to GNU FDL version 1.3.
  • Fixed a bug where the gsl_isinf function would return +1 for -Inf on systems where isinf(-Inf) returns the non-standard value +1. [bug #24489]
  • Added missing functions gsl_vector_complex_{isnonneg,add,sub,mul, div,scale,add_constant} and gsl_matrix_complex_float_isnonneg [bug #22478]
  • Cross compilation should now work for x86 hosts.
  • Fixed a bug in gsl_interp_accel_find() where values lying on the upper boundary between interpolation points could return the index from the lower side. [bug #24211]
  • Fixed gsl_linalg_solve_cyc_tridiag so that its output respects the solution vector's stride. Previously the x_stride value was ignored causing the output to be incorrect for non-unit stride. [bug #24162]
  • Corrected a bug in the series calculation of gsl_sf_ellint_Kcomp for k close to 1. [bug #24146]
  • Extended gsl_linalg_QRPT_update to handle rectangular matrices. Corrected definition of the update formula in the manual for both gsl_linalg_QR_update and gsl_linalg_QRPT_update.
  • Added routine gsl_linalg_cholesky_invert
  • Fixed a bug the simplex algorithm which caused the second highest point to be incorrectly equal to the first when the first value was the highest, which could cause suboptimal convergence. [bug #23192]
  • Fixed a problem with convergence for inverse gamma and chisq distribitions, gsl_cdf_gamma_{P,Q}inv and gsl_cdf_chisq_{P,Q}inv. [bug #23101]
  • Improved the handling of constant regions in Vegas by eliminating spurious excess precision when computing box variances.
  • Fixed a potential division by zero in gsl_monte_miser when the left/right weight factors decrease below 1.
  • Fixed incorrect dimensions check in gsl_matrix_sub{row,column}

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