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GNU Scientific Library 1.12 released

Item posted by -Deleted Account- <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: (2.8 MB) (GPG signature)
3b5cba13f4b90e1473f693a5dc7efdcaae55fc46 (sha1 checksum)

The GSL project homepage is

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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