From lemming at henning-thielemann.de  Sat May 25 14:42:51 2019
From: lemming at henning-thielemann.de (Henning Thielemann)
Date: Sat, 25 May 2019 16:42:51 +0200 (CEST)
Subject: [Numeric] Announce: comfort-array, lapack
Message-ID: <alpine.DEB.2.20.1905251247190.4816@sputnik>


I like two announce two of my packages:

1. comfort-array
http://hackage.haskell.org/package/comfort-array

It provides Boxed and Storable arrays with very liberal shape definitions. 
You may use ranges of indices like in 'array' or zero-based indexing like 
in 'repa', but you can also use arbitrary index Sets, enumerations, 
concatenation of arrays and more. E.g. an array with (Shape.Enumeration 
Ordering) has three elements with indices LT, EQ, GT.

2. lapack
http://hackage.haskell.org/package/lapack

A high-level interface to the numerical Linear Algebra package LAPACK. It 
is based on comfort-array, which means that a vector can have a rich 
structure. E.g. matrix vector multiplication has the signature:
    (#*|) :: Matrix.General height width a -> Vector width a -> Vector height a

Thus, a 'Matrix.General (Shape.Enumeration Ordering) (h,w) a' would map a 
rectangular array with dimensions h and w to a three-element vector with 
indices LT, EQ, GT.

The LAPACK interface provides solvers for simultaneous linear equations, 
linear least-squares problems, eigenvalue and singular value problems for 
square, triangular, symmetric, Hermitian, banded and banded Hermitian 
matrices, as LAPACK supports them.


For a motivating example refer to:
    http://code.henning-thielemann.de/bob2019/main.pdf

From ben at smart-cactus.org  Mon May 27 21:34:50 2019
From: ben at smart-cactus.org (Ben Gamari)
Date: Mon, 27 May 2019 17:34:50 -0400
Subject: [Numeric] Announce: comfort-array, lapack
In-Reply-To: <alpine.DEB.2.20.1905251247190.4816@sputnik>
References: <alpine.DEB.2.20.1905251247190.4816@sputnik>
Message-ID: <875zpvoa2v.fsf@smart-cactus.org>

Henning Thielemann <lemming at henning-thielemann.de> writes:

> I like two announce two of my packages:
>
> 1. comfort-array
> http://hackage.haskell.org/package/comfort-array
>
> It provides Boxed and Storable arrays with very liberal shape definitions. 
> You may use ranges of indices like in 'array' or zero-based indexing like 
> in 'repa', but you can also use arbitrary index Sets, enumerations, 
> concatenation of arrays and more. E.g. an array with (Shape.Enumeration 
> Ordering) has three elements with indices LT, EQ, GT.
>
Very nice. I have long wanted something like this. Thanks Henning!

Cheers,

- Ben
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From dominic at steinitz.org  Wed May 29 09:54:07 2019
From: dominic at steinitz.org (dominic at steinitz.org)
Date: Wed, 29 May 2019 10:54:07 +0100
Subject: [Numeric] Announce: comfort-array, lapack
In-Reply-To: <875zpvoa2v.fsf@smart-cactus.org>
References: <alpine.DEB.2.20.1905251247190.4816@sputnik>
 <875zpvoa2v.fsf@smart-cactus.org>
Message-ID: <5ECB0375-2D9F-441C-B8E4-E71487B3BCB4@steinitz.org>

Hi Ben,

I am intrigued. What application do you have in mind?

Dominic.
Dominic Steinitz
dominic at steinitz.org
http://idontgetoutmuch.org
Twitter: @idontgetoutmuch


> On 27 May 2019, at 22:34, Ben Gamari <ben at smart-cactus.org> wrote:
> 
> Henning Thielemann <lemming at henning-thielemann.de> writes:
> 
>> I like two announce two of my packages:
>> 
>> 1. comfort-array
>> http://hackage.haskell.org/package/comfort-array
>> 
>> It provides Boxed and Storable arrays with very liberal shape definitions. 
>> You may use ranges of indices like in 'array' or zero-based indexing like 
>> in 'repa', but you can also use arbitrary index Sets, enumerations, 
>> concatenation of arrays and more. E.g. an array with (Shape.Enumeration 
>> Ordering) has three elements with indices LT, EQ, GT.
>> 
> Very nice. I have long wanted something like this. Thanks Henning!
> 
> Cheers,
> 
> - Ben
> _______________________________________________
> 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 May 29 09:58:56 2019
From: lemming at henning-thielemann.de (Henning Thielemann)
Date: Wed, 29 May 2019 11:58:56 +0200 (CEST)
Subject: [Numeric] Announce: comfort-array, lapack
In-Reply-To: <5ECB0375-2D9F-441C-B8E4-E71487B3BCB4@steinitz.org>
References: <alpine.DEB.2.20.1905251247190.4816@sputnik>
 <875zpvoa2v.fsf@smart-cactus.org>
 <5ECB0375-2D9F-441C-B8E4-E71487B3BCB4@steinitz.org>
Message-ID: <alpine.DEB.2.20.1905291158230.3746@sputnik>


On Wed, 29 May 2019, dominic at steinitz.org wrote:

> Hi Ben,
> I am intrigued. What application do you have in mind?

I removed haskell at haskell.org from CC.

I am also interested in your application.