[Help-gsl] stepping down as maintainer

Hello. It's time for me to step down as maintainer of GSL. If anyone wants to take over the role please contact maintain...@gnu.org. ___ Help-gsl mailing list Help-gsl@gnu.org https://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] [Bug-gsl] stepping down as maintainer

Thanks to everyone for all the kind comments - they are much appreciated. All the best. -- Brian

[Help-gsl] Handbook of Mathematical Functions at Archive.org

I uploaded a scan of AMS55 at http://archive.org/details/HandbookOfMathematicalFunctions Maybe users of GSL will find it useful, since the code follows the conventions there.

Re: [Help-gsl] help with QR decomposition

stem with a non-square matrix i receive the > following output: > > gsl: qr.c:114: ERROR: QR matrix must be square Use the QR lssolve function if you want to solve for M>N (see the reference manual for details). -- regards, Brian Gough Network Theory Ltd, Publishing Fre

Re: [Help-gsl] Determinant of a matrix:

les of the book supports the development of free software and documentation. -- Brian Gough (GSL Maintainer) Network Theory Ltd, Commercial support for GSL --- http://www.network-theory.co.uk/gsl/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] compiler fast math options

fast-math option is not recommended for use with GSL. If you build the library with that option the "make check" test suite will fail. -- regards, Brian Gough Network Theory Ltd, Commercial support for GSL --- http://www.network-theory.co.uk/gsl/

Re: [Help-gsl] relocation error: ./example: undefined symbol: gsl_cdf_chisq_Q

up, e.g. an old version installed somewhere which doesn't have the referenced function. -- regards, Brian Gough Network Theory Ltd, Commercial support for GSL --- http://www.network-theory.co.uk/gsl/ ___ Help-gsl mailing list Help-gsl@gnu.org

Re: [Help-gsl] static find() in histogram code

o your application if you need it, if gsl_histogram_find does not do the job. -- Brian Gough Network Theory Ltd, Commercial support for GSL --- http://www.network-theory.co.uk/gsl/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/m

Re: [Help-gsl] underflow in coulomb_bound.c

se gives underflow error. Thanks, I've fixed that for the next release. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

[Help-gsl] moderators

I'm looking for a couple of volunteers to help moderate this list and bug-gsl (checking messages from nonsubscribers to weed out spam). It takes a few minutes each day using the mailman web interface. Thanks. -- Brian Gough ___ Help-gsl mailing

[Help-gsl] Re: Problen with "release-1-6"

Indranil Das writes: > gsl-ref.texi:106: @include `version-ref.texi': No such file or directory. > makeinfo: Removing output file `/home/headali/gsl/doc/gsl-ref.info' due to > errors; use --force to preserve. configure --enable-maintainer-mode see the HACKING file for

Re: [Help-gsl] Compile Problems on solaris 5.8 with Sun-cc

s for the email. There is a small bug there, which should be fixed if you use the patch below. -- Brian Gough Network Theory Ltd, Commercial support for GSL --- http://www.network-theory.co.uk/gsl/ Index: dwt.c === RCS file: /ho

Re: [Help-gsl] Make Check Fail/MINGW

oment, I don't think it is a question of the compiler options. The monte carlo tests can be sensitive to changes in rounding but it's difficult to say exactly what is going on. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http:

Re: [Help-gsl] gsl: : ERROR

27;s probably a memory leak in your program... I don't think the random number generator has anything to do with it. Look up 'mtrace' in the GNU C Library reference manual for one way to debugging memory leaks. -- Brian Gough Network Theory Ltd, Publi

Re: [Help-gsl] Kronecker Product

Gabriel Cardi writes: > Does it exist a Kroncker product between 2 matrices in GSL? > And for Complex matrices? No. See the "Vectors and Matrices" chapter in the manual for the complete list of matrix functions. -- Brian Gough

Re: [Help-gsl] question about solving the eigensystem

as it is a fairly difficult problem. -- regards Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] FW: [gnu.org #221671] Gnu Scientific Library 1.6 PS format

oad the source if you want to make another format -- e.g. info format, which is searchable (in Emacs). -- regards Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Numerical Differentiation

not the older "diff" functions. If you look in the source for deriv/ there should be some comments which explain the algorithm. It is a simple optimisation of the sum of round-off error and truncation error. The book isn't really needed, it is more of a general reference. -- reg

Re: [Help-gsl] complex matrix generation with GSL???

nd A(2,2)=-1-j. I would be really gratefull > for an example script. The file eigen/test.c in the GSL distribution creates some complex matrices. It is a test for the hermitian eigensolver routines, but you can use it as an example of how to work with complex matrices. -- best regards Brian

Re: [Help-gsl] question about solving the eigensystem

x layouts (column-major) so they are not elegant to use in C. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] GSL Reference Manual - Gzipped Postscript

browser already uncompressed it I think. -- regards Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] RK8pd nan?

ming from that routine directly. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] conjugate transpose of a complex rectangular matrix

do it? There's no single function for it (an omission in the library). I'd suggest writing your own function in your application (it is only a couple of "for" loops) If you are using blas functions you may not need it, since the Trans argument can often be used instead. --

Re: [Help-gsl] testing the nonlinear least square example

rogram is crashing when it tries to access static objects in the DLL. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Fermi-Dirac integrals

ilable somewhere for the Complete Fermi-Dirac > integral of index 5/2? Sorry we don't have the arbitrary half-integer case. The original paper is ACM TOMS Algorithm 745. -- Brian Gough Network Theory Ltd, Commercial support for GSL --- http://

Re: [Help-gsl] Gauss Kronrod nodes and weights

es. I don't know of any specific software but a method for calculating them is described in the QUADPACK book (reference given in the GSL manual). -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ __

Re: [Help-gsl] Building the 32 bit gsl libraries on a 64 bit machine

ro_55.html (sales of the book help support the development of GSL). -- regards, Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Airy function

eal value. > Is there any way to obtain the value of this function for complex > arguments? Or should I look for any other libraries for my purpose? Sorry we don't have a complex version of the Airy function. I think you can find an old fortran version at www.netlib.org. -- reg

Re: [Help-gsl] Is there a function in GSL for complex-matrix cholesky decomposition?

No. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] A Question with using gsl_integration_qags

workspace.c:62: ERROR: failed to allocate space for blist ranges > Default GSL error handler invoked. > Aborted Most likely the program has run out of memory, caused by a memory leak (not freeing memory that is no longer needed). -- Brian Gough Network Theory Ltd, Publishing Free Soft

Re: [Help-gsl] Usage of gsl_sf_coulomb_wave_FG_e

L (??) -- you need to use more warning options to detect problems like that, see here: http://www.network-theory.co.uk/docs/gccintro/gccintro_9.html http://www.network-theory.co.uk/docs/gccintro/gccintro_45.html -- regards Brian Gough Network Theory Ltd, Publishing "An Introduction to GCC"

Re: [Help-gsl] Can I create a symmtric matrix?

#x27;t > find any functions to do so. The raw CBLAS functions have support for packed (symmetric) matrices. GSL matrices don't have this, but you could define a few _get/_set packed access functions for such matrices. -- Brian Gough __

Re: [Help-gsl] The spline polynomial coefficients are unique (????)

I would suggest using GNU octave to generate the matrix from the recurrence relations and solve it, then you can see at what stage the discrepancy arises (by looking at the intermediate results in GSL with gdb, for example). -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals

Re: [Help-gsl] Generating the coefficients in lanczos_7_c

Fredrik Johansson writes: > Presumably the information I need can be obtained from the cited SIAM > journal article, but it is not easily available for me from where I > live now. if it's not online, try a google search for "cheap document delivery" or s

Re: [Help-gsl] fit/linear.c

specific example. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] The spline polynomial coefficients are unique (????)

e solved, I think--it depends globally on the data. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] (in)accuracy of gsl_poly_complex_solve for repeated roots?

are exactly representable), it gives roots: Thanks, I will add a note about it in the manual. Higher multiplicity roots are always more sensitive to numerical error as there is a factor of (macheps)^(1/n) in the error for a root of multiplicity n. --

Re: [Help-gsl] GMP support

alue problem > solvers which use multiprecision data types? GSL uses double precision throughout, so unless there is a way to rescale your problem you're out of luck I'm afraid. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org htt

Re: [Help-gsl] Re: (in)accuracy of gsl_poly_complex_solve for repeated roots?

l add a note pointing to this. Thanks for the reference, it's a nice algorithm. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] ODE solver questions

lution and then use the gsl_interp routines. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] ODE step functions?

own application and modify the names of the functions in it to create your own method, e.g my_odeiv_step_bsimp. You can then use that method in exactly the same way as the gsl provided ones. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.netwo

Re: [Help-gsl] Fwd: help on high-order Numerical Differentiation

stable for higher orders. The best technique for computing higher order derivatives is "Automatic differentiation". It's half-way between numerical differentation and symbolic differentiation. There are several free packages for this, e.g. on Netlib. -- Brian Gough _

Re: [Help-gsl] Gnu Scientific Library: Reference Manual

etails. It includes a lot of additional corrections that I found while proofreading it (these are now in CVS on sources.redhat.com). The examples are the same. The figures and typesetting are also improved in this edition. The sales of the manual help to support my work on GSL. -- Brian

Re: [Help-gsl] LM nolin fit problem

Jim Cadien writes: > Does anyone here have suggestions? I could post my code if > needed. Thanks. backtrace in the debugger (see GSL Manual Debugging chapter) compile GSL and your program with bounds-checking http://www.network-theory.co.uk/articles/boundschecking.html -- Brian

Re: [Help-gsl] what can I improve in that function ?

onverging? Since there are power-law singularities at the end-points [0,1] you could transform the integral into a form suitable for the _qaws routine. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___

Re: [Help-gsl] Odeiv bsimp?

rt time periods > has. Can you make a simplified example that reproduces the problem and submit it as a bug report to [EMAIL PROTECTED] The solver should not try to take negative or zero steps, that would be a bug. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http:/

Re: [Help-gsl] better generator for gaussian random numbers

people can try it out--I'll make a link to it from the main GSL page. Also some way of stress testing it or example of how it was tested would be useful. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ _

Re: [Help-gsl] Problem during Make (in Wavlet)

ete/edit the offending line to match the previous definition to work around it. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] gsl and C++

acros), very similar to the C++ std:: math > library (file cmath). Sorry, we have no plans to do that ourselves. -- regards, Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailin

Re: [Help-gsl] Extracting real/imag parts of complex vectors and matrices

on memory layout. -- regards, Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] what can I improve in that function ?

on harder. QAGS might work if you break the integral into two parts, one for each end-point. QAWS is probably better though. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list

Re: [Help-gsl] better generator for gaussian random numbers

e analysis and testing that would be great. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] better generator for gaussian random numbers

me values around i>=127 to make sure they match up smoothly. I will let people have a chance to look at it. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list He

Re: [Help-gsl] LM non-lin fit

points). You'd need to modify the derivatives accordingly. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] gsl and C++

inlined. A problem that was raised on the gsl-discuss list was that there was no easy way to pass a function pointer to a member function from C++ to C. The archives are at http://sources.redhat.com/gsl/ if you want to look at it. -- Brian Gough Network Theory Ltd, Publishing Free Soft

Re: [Help-gsl] better generator for gaussian random numbers

hi-squared generator because of its applications > to queueing models. Thanks, there is an erlang.c in the distribution but it looks like it's not documented in the manual. I'll add an entry for it. -- Brian Gough Network Theory Ltd, Publishing Free Soft

Re: [Help-gsl] Re: Error Messages

** [install-am] Error 2 > make[1]: Leaving directory `/home/sham/gsl-1.6/sys' > make: *** [install-recursive] Error 1 The actual error message that caused the installation to fail will appear just before these -- you need to look further back. -- Brian Gough Network Theory Lt

Re: [Help-gsl] Compiling GSL with C++

ce it's not possible to throw exceptions across code > compiled as C++ (If one tries, the exception handling system will > exit the app, and this is definitely not what's wanted when doing > time-consuming computations) GCC has an option for controlling this--see the GCC man

Re: [Help-gsl] QR Decomposition for a matrix with complex values

ls. As far as I know, nobody is working on adding it to GSL though. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] non-square QR decomposition

ow about gsl_multifit, > but I need something more general. There is a separate function for the non-square case ("lssolve", I think). See the GSL manual for details. -- Brian Gough Network Theory Ltd, Publishing Free Software M

Re: [Help-gsl] Find all the relative maximum/minimum of a function

7;d need to write in your own application. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] using gsl_stats_skew_m_sd

clear this up for me, I would appreciate it. Hello, There is a description of strides in the Vectors and Matrices chapter of the manual (see under "stride" in the index). -- regards Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ __

Re: [Help-gsl] GSL with C/C++ interpreter Ch

Peter Wu writes: > I wonder if it is possible that GSL bundles the ch bindings source > code together for distribution. Hello, We don't include bindings in the main distribution. They are always distributed and maintained separately by their authors. -- best regards, Brian

Re: [Help-gsl] Help linking with gsl

h_frame+0x11): > undefined reference to `__gxx_personality_v0' collect2: ld returned > 1 exit status Can someone please tell me what I am doing wrong? See http://www.network-theory.co.uk/docs/gccintro/gccintro_54.html (at the end) -- Brian Gough Network Theory Ltd, Publishing Free So

Re: [Help-gsl] ode problem

Tomasz Samotyjak, PWSZ writes: > f[0] = 1/L1 * ( 400*sin(314*t) - f[1] - R1 * f[0] ); f[] shouldn't depend on itself... perhaps the RHS should use y[] instead. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theo

Re: [Help-gsl] gsl: fwrite_source.c:64: ERROR: fread failed

dual > processor xeon server. "fread failed" - it couldn't read from a file Beyond that you would have to use a debugger http://www.network-theory.co.uk/docs/gslref/gsl-ref_511.html regards -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals

Re: [Help-gsl] Multidimensional Minimization of a nonlinear function.

uot;callback" to get values from a C function that you provide--this is how most minimisation programs work. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Minimization problem : function not continuous

The error message is a bit misleading, since it's the singularity that is the problem rather than discontinuity (I will correct that in the next release). -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ _

Re: [Help-gsl] spherical harmonics for m<0 (m=-l)

n +m and -m (Abramowitz &Stegun 8.2.5) If you are computing multiple values you'll want to use the sphPlm_array function for efficiency. I'm not sure why the original function is restricted to m>=0, maybe there was a reason for that. -- Brian Gough Network Theory Ltd, P

Re: [Help-gsl] ATLAS, SMP, Suse GSL vs. vanilla

ain't broke, don't fix it". I will change USE_BLAS to be the default next time. There are other routines which also need to be blas-ified. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ __

Re: [Help-gsl] make check fail with gsl-1.7

Robin Hankin writes: > FAIL: haar-centered(2)-2d nonstd other data untouched, n = 64, tda = > 69 [12138] > FAIL: test > > what's going on here? Try compiling without optimisation, or with a different version of gcc. -- Brian Gough

Re: [Help-gsl] are multidimensional minimisers threadsafe?

Kane Usher writes: > Has enyone had problems with using the mulitdimensional minimisers in a > threaded environment? I'm using gsl release 1.5 under suse 9.3. You need a separate workspace for each thread. -- Brian Gough Network Theory Ltd, Publishing Free Software Manua

Re: [Help-gsl] Example not match...

.. Is it a problem of round error? And is it computer architecture > dependent? Yes, it's system/architecture dependent (the error is below double precision accuracy). -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Cannot find routines in gsl.

intro_18.html -- regards, Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] integration w/ qagp, bessel_Jnu

he underflow error if it doesn't affect the final results. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Problems with #include options in GSL

-- Joseph Rushton Wakeling, 2005 > * > * Copyright (C) 1996, 1997, 1998, 1999, 2000 James Theiler, Brian Gough > * Copyright (C) 2005 Joseph Rushton Wakeling That looks fine. The main principle is never to remove any existing co

Re: [Help-gsl] Vector and matrix views

7;s const on the outside but non-const on the inside. It would be cool to discover other ways to do it but I think that this might be the only way in C. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/

Re: [Help-gsl] Vector and matrix views

tride > (from row to row) is in a field called 'tda'. In fortran it is LDA (standing for "leading dimension of A" ) with column-major matrices. In C the matrices are row-major so everything is reversed, hence it was named "trailing dimension of A" = tda. --

Re: [Help-gsl] Vector and matrix views

7;t part of C89. See http://www.network-theory.co.uk/docs/gccintro/gccintro_27.html and http://www.network-theory.co.uk/docs/gccintro/gccintro_28.html for details. -- Brian Gough Network Theory Ltd, Publishing Free Software Manuals --- http://www.network-theory.co.uk/ __

Re: [Help-gsl] QR decomposition...

linalg_QR_decomp (or gsl_linalg_QRPT_decomp2 ??). Does somebody > knows how to do this ? See the documentation for gsl_linalg_QR_unpack -- best regards, Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ _

Re: [Help-gsl] Geometry, transformations, etc.

independently of GSL. Possibly there is something in games programming that already does it -- you could look on the FSF free software directory http://directory.fsf.org/ -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/

Re: SV: [Help-gsl] On conjugate gradient algorithms in multidimentional minimisation problems.

Max Belushkin writes: >I've ran into a funny issue. I have a certain point, not too far from > a minimum, which I use as a starting point for fits. Just for clarification, what type of function are you minimising? -- Brian Gough Network Theory Ltd, Publishing the GSL Manu

Re: [Help-gsl] least-squares fitting or minimization with constrained parameters

east-squares fit to some data with the > constrain that the first of them has the shorter relaxation time. > > Is this possible, and how would that be implemented? Take a look at http://ool.sourceforge.net/ listed on the main GSL page at gnu.org -- Brian Gough Network Theory Ltd, P

Re: SV: [Help-gsl] On conjugate gradient algorithms in multidimentional minimisation problems.

n the standard way based on this function, the > data, and the errors of the data. To the fit, chi squared is being fed, > the gradient is computed numerically in each parameter. Hello, Did you try the gsl_multifit functions? If it's a least-squares problem they will work much

Re: [Help-gsl] Non-central chi-squared-distribution

a separate file (or package): see http://sources.redhat.com/gsl/devel.html "Packages" so that people can try it. I will add a link to it from the main GSL webpage. -- Brian Gough ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] long double gsl_sf_exp()

special functions are double precision only. As mentioned, use expl(). -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Source file for std deviation calculation?

[EMAIL PROTECTED] writes: > Can you please tell me which source file in gsl is for > std deviation calculation? I can only find .h, but not > .c. It's in statistics/variance_source.c. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co

Re: [Help-gsl] [doc] One line to add in a example

gsl_interp_type * ) malloc ( gsl_interp_cspline > );*/ Hello, This object is defined in , if it's not defined there's a problem with your installation. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ __

Re: [Help-gsl] Polynomial root finding

report them to bug-gsl@gnu.org as a bug, with a small example program as a test case. Thanks. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Help with setup!

ated with the GNU project or GSL. If you have problems with their files you need to contact them about it. I have asked them to make this clearer on their website. The version of GSL in Cygwin works fine http://www.cygwin.com/ -- regards, Brian Gough (GSL Maintainer) _

Re: [Help-gsl] efficient use of gsl in multithreaded programs

> right? I did, and my program just hung on evaluating the first IC at t=0 and > stayed there. I don't think you need to make gsl_odeiv_step_type private but the others look correct. -- Brian Gough Network Theory Ltd, Publishing the GSL M

Re: [Help-gsl] gsl win version

Yun Li writes: > I new in the list. I wonder if there is a windows version for gsl. If yes, > where can I download it? There is a precompiled version in Cygwin http://www.cygwin.com/ -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/

Re: [Help-gsl] Maximum size of matrices

computer, or is this an intrinsic limitation of the library ? There's no intrinsic limitation in GSL, it calls the system's malloc() function to allocate the block of memory. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.networ

Re: [Help-gsl] Lomb periodogram

Jerome BENOIT writes: > I have just looked for an implementationof the Lomb periodogram in GSL: > I am very surprised not to see it, and I wondering why. That's life with free software unfortunately. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://

Re: [Help-gsl] inverting a symmetric positive definite matrix

x L returned by the decomposition to compute the inverse another way if you want to. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ ___ Help-gsl mailing list Help-gsl@gnu.org http://l

Re: [Help-gsl] Maximum size of matrices

Analabha Roy writes: > Well. Assuming ur datatypes are "floats" then 128 bits per float (right?), > with 16000*3000 floats means abt 1 GIG of RAM > > If ur using "doubles" then out of the question in standard boxen. 16000 * 3000 * sizeof(double) (i

Re: [Help-gsl] Lomb periodogram

icient) and I will list it in the extensions section at http://www.gnu.org/software/gsl/ -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ ___ Help-gsl mailing list Help-gsl@

Re: [Help-gsl] gsl and gdl

need to be root to write to the installation directory (/usr/local/) -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Bug in implementing Kummer's U?

action. -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theory.co.uk/gsl/manual/ ___ Help-gsl mailing list Help-gsl@gnu.org http://lists.gnu.org/mailman/listinfo/help-gsl

Re: [Help-gsl] Wavelet Transform Functions (1D/2D)

ed inside > of the output array. The output format is in the manual under the description of the function gsl_wavelet_transform. The number of levels is always log_2(N). -- Brian Gough Network Theory Ltd, Publishing the GSL Manual --- http://www.network-theor

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