Conference rusure::math

    In a prior life I found that at least one IBM "370" type math library
    was available from IBM as FORTRAN source code. It was a very "old"
    product and the IBM sales rep was stunned to be asked for it. It
    was about 1600 bucks in 1983. Perhaps it might still be available
    from them. Perhaps our old Scientific Subroutine Package or VAXLAB
    stuff would cover you?

Here is a brief description of a math library being developed by the High 
Performance Systems Group.
    
PRODUCT DESCRIPTION 

Digital's Extended Math Library (DXML) is a set of subroutines which are drawn
from existing proprietary and public libraries. It is optimized for the VAX
vector architecture and is available for VAX and MIPS scalar platforms. It will
include the Level 1 Basic Linear Algebra Subroutines (BLAS) extensions, BLAS
Level 2, BLAS Level 3 and Signal Processing Subroutines. It is developed and
optimized for VMS and ULTRIX and is portable to other non-VAX platforms. The
BLAS library is taken from the public domain and are very low level routines
that can be called from any high level language. Scientific and engineering
applications that use computationally intensive linear algebra and signal
processing programming techniques will call DXML for optimum performance and
utilization of the VAX vector architecture. 

This product will complement and enhance the VMS Math Run Time Library. The 
Math RTL contains the BLAS 1 library. DXML will contain documentation for 
BLAS 1 as well as the other BLAS libraries for easy reference by our customers.
    
DXML is about to exit phase 1, will be program announced with the VAX 9000, and
will FRS with the first Vector VAX's. 

	Re: .2, great to hear about this.   Is it too early to publish
in this notesfile a more detailed list of the functions that will be
supported?   In particular, by some definitions, linear algebra does not
include linear programming, which is the goal of .0.

	I will admit: I don't know where to find information about the
existing VAX RTL.   Can someone point to this, please.

	Note also, the unsupported testimony of 419.3.   I haven't used
ISML, but I thought they were a reputable bunch.   Any comments?

Thanks,
Andrew.

    I'd be very interested in what is available from .2

    I have a collection of public domain routines (such as LINPACK, etc.)
    but it would be nice to have optimized code for these algorithms.

    Will there be any sparse matrix code, or anything which is applicable
    to the peculiarities of finite element solvers?

    I haven't tried to pull stuff from NETLIB, but that is a possible
    source of good information.

    The comments in 419.3 may pertain only to TOPS20, I really don't know.
    I do understand that IMSL takes basically public domain algorithms
    and implements them in FORTRAN;  much of their code is available
    in the public domain already, in packages like LINPACK and EISPACK.
    These are very high quality, portable packages.  Actually most of these
    routines are based on ALGOL programs published in numerical analysis
    journals.  Implementing them is fairly straightforward, but there's
    a lot of code so it does take some time.

    Another library is NAG (Numerical Algorithms Group) from the UK.

    - Jim

    Does anyone know a current reference to NETLIB
    through decwrl::.
    
    They seem to have moved.
    
    ...Cal

    Netlib can be reached at [email protected]
    
    It used to be at Argonne earlier, but as Jack Dongarra moved to 
    Tennessee, it has moved with him.
    
    Chandrika.
    

    I like to know if the MATH library of HPS is ready for internal use.
    I'm looking for routines in the area of lineair extrapolation and
    chi-square estimation. Are such a kind of routines available via
    this library ?

    Are threre more references ? At least the math library should be
    officially supported.

    Inputs are most welcome.


    Wim Keessen.
    Systems Development & Engineering
    

    I don't know about our internal library, but:

    Public domain software is available over the net - two servers
    that would be useful to you are

	DECWRL::"[email protected]"
	DECWRL::"[email protected]"

    For either of these, sending a one-line message of the form
    "send index" will explain what is available and how to get more
    detailed indices.

    - Jim

Re 1139.7

Yes, Digital Extended Math Library (DXML) is ready. You can find more 
details in the notesfile vino::dxml.

Unfortunately, linear extrapolation and chi-square estimation are not 
supported, at present. If you feel that these routines should be provided, 
please post a note to that effect in the notesfile, with more details about
what exactly you would like to see provided in the routine.

chandrika

    Thanks to all who helped me sofar in the search for math libraries.

    Wim.