From lemming at henning-thielemann.de  Mon Aug  9 16:30:26 2021
From: lemming at henning-thielemann.de (Henning Thielemann)
Date: Mon, 9 Aug 2021 18:30:26 +0200 (CEST)
Subject: [Numeric] Announcement: lapack-0.4
Message-ID: <6d2737bf-483b-c4c6-9c86-74e91d52286a@henning-thielemann.de>


I'm happy to release lapack-0.4, a new version of the high-level bindings 
to LAPACK (i.e. efficient numeric linear algebra).

News:

* Even more unified Matrix type
   Allows for a generic 'transpose' function.

* Support for unpacked triangular, symmetric and Hermitian matrices.

* Two distinct types of Square matrices:
   One with equal and one with distinct height and width shape types.

* Hermitian: added definiteness information to the type

* Matrix functions sqrt, exp, log also for special matrix types
   (triangular, unit triangular, Symmetric, Hermitian)

* Infix operator fun
   You may write a#^T for transpose and a#^Inv for inverse etc.
   Certainly not for serious use but I found the idea funny.

From carter.schonwald at gmail.com  Tue Aug 10 19:10:31 2021
From: carter.schonwald at gmail.com (Carter Schonwald)
Date: Tue, 10 Aug 2021 12:10:31 -0700
Subject: [Numeric] Announcement: lapack-0.4
In-Reply-To: <6d2737bf-483b-c4c6-9c86-74e91d52286a@henning-thielemann.de>
References: <6d2737bf-483b-c4c6-9c86-74e91d52286a@henning-thielemann.de>
Message-ID: <CAHYVw0zY3bPfyOu1DCmddK=jKVsdWtV5RyPFLdaqvMbUu1nvzA@mail.gmail.com>

Awesome

On Mon, Aug 9, 2021 at 9:30 AM Henning Thielemann <
lemming at henning-thielemann.de> wrote:

>
> I'm happy to release lapack-0.4, a new version of the high-level bindings
> to LAPACK (i.e. efficient numeric linear algebra).
>
> News:
>
> * Even more unified Matrix type
>    Allows for a generic 'transpose' function.
>
> * Support for unpacked triangular, symmetric and Hermitian matrices.
>
> * Two distinct types of Square matrices:
>    One with equal and one with distinct height and width shape types.
>
> * Hermitian: added definiteness information to the type
>
> * Matrix functions sqrt, exp, log also for special matrix types
>    (triangular, unit triangular, Symmetric, Hermitian)
>
> * Infix operator fun
>    You may write a#^T for transpose and a#^Inv for inverse etc.
>    Certainly not for serious use but I found the idea funny.
> _______________________________________________
> Numeric mailing list
> Numeric at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/numeric
>
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From lemming at henning-thielemann.de  Wed Aug 11 07:42:05 2021
From: lemming at henning-thielemann.de (Henning Thielemann)
Date: Wed, 11 Aug 2021 09:42:05 +0200 (CEST)
Subject: [Numeric] Announcement: Fast Fourier transform with comfort-fftw
Message-ID: <34e3f5c9-a2eb-4b30-9388-9266db2617@henning-thielemann.de>


I have released:
    https://hackage.haskell.org/package/fftw-ffi
    https://hackage.haskell.org/package/comfort-fftw

This is an alternative to the 'fft' package (based on 'carray' and 
'ix-shapable').

The package comfort-fftw is based on comfort-array and uses Cyclic and 
Half Spectrum shapes. The Cyclic shape allows you to access the (n-1)-th 
element also by index (-1). This reflects the cyclic interpretation of 
data implied by the discrete Fourier transform. The Half Spectrum shape 
greatly simplifies working with the spectrum of real data, both of even 
and odd length, and reduces the danger of mistakes. The bindings use 
distinct array shapes for the four kinds of both cosine and sine 
transformation and thus ensure, that you use the right one for back 
transformation.

Two examples may demonstrate its usage:

https://hackage.haskell.org/package/align-audio
    Find relative displacement of two recordings of the same music.

https://hackage.haskell.org/package/sound-collage
    Assemble a mosaic of sound snippets according to a target music recording.