Introducing Keith Lofstrom

[Keith Lofstrom]

I am an integrated circuit engineer, a mediocre programmer (I started
with Fortran 40 years ago, I now use Perl and C). I use Perl to write
ad-hoc glue between CAD tools, and do low-intensity statistical/
numerical work. I am currently experimenting with web based
"customizable" data sheets - my SiidTech technology ( http://www.siidtech.com
) is difficult to explain with datasheets and app notes, so instead
customers will enter their requirements and get a one-off data sheet
that applies to their domain. A lot of numeric calculation needed, on
the fly, to build some of the graphs.

I also inherited the dirvish disk-to-disk backup project, which has a
few thousand users, about 180 subscribers to the email list, and needs
attention from real programmers. It is being used to back up the OSU
Open Source Labs (principal mirror for Mozilla, Gentoo, and Drupal,
among others) so it is getting some help from those capable folk.

Thank you, Jonathan and Theirry , for your work on Math::GSL ; all I
have found in CPAN that evaluates erfc() was Math::Cephes . I look
forward to trying out the new library, and someday being able to do
some convolution integrals directly.

I run Scientific Linux 5, a RHEL5 clone out of FermiLabs. I will
mention this group on their mailing list. Expect to see a bunch of
new folks showing up soon.

Keith

[Jonathan Leto]

Welcome Keith!

Thank you, Jonathan and Theirry , for your work on Math::GSL ;  all I
have found in CPAN that evaluates erfc() was Math::Cephes .  I look
forward to trying out the new library, and someday being able to do
some convolution integrals directly.

I am very interested in the types of convolution integrals that you are doing, what are the bounds of integration and types of function? You said something like a gaussian and a step function ? Do you know the exact analytic form of the functions that you are integrating or must they also be numerically approximated?

If you shoot me your snippet of code that uses erfc() from Math::Cephes I can show you how to do it with Math::GSL::SF .

Cheers,

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Jonathan Leto
jal...@gmail.com