From: glen herrmannsfeldt <gah@ugcs.caltech.edu>
Subject: Re: Does Ada need elemental functions to make it suitable for scientific work?
Date: Sun, 29 Jul 2012 20:54:44 +0000 (UTC)
Date: 2012-07-29T20:54:44+00:00 [thread overview]
Message-ID: <jv47uk$b5o$1@speranza.aioe.org> (raw)
In-Reply-To: migrc2viocso$.71k736ggloqr.dlg@40tude.net
In comp.lang.pl1 Dmitry A. Kazakov <mailbox@dmitry-kazakov.de> wrote:
(snip, someone wrote)
>>>>> It is ill-defined. E.g. exp(A), where A is a matrix.
>>>>> Is exp(A) a matrix of exponents or exponent matrix?
I can see a general purpose (more or less) high-level languages
offering a matrix multiply operator, but this seems a little
less common.
The only language I know of that offers matrix multiply and
not element-by-element multiply is BASIC.
>>>> In languages that provide whole array operations (i.e.,
>>>> element-by-element operations -- such as PL/I and Fortran),
>>>> it is the former.
Fortran now has the MATMUL intrinsic to do matrix multiplication.
The * operator does element by element multiply.
One could ask for a MATEXP intrinsic, though it isn't likely
to be added soon.
-- glen
next prev parent reply other threads:[~2012-08-02 12:17 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-09 23:27 Does Ada need elemental functions to make it suitable for scientific work? Nasser M. Abbasi
[not found] ` <d78nv7dhf88bqv7hrd9eft231a4h2scs10@invalid.netcom.com>
2012-07-10 4:22 ` Nasser M. Abbasi
2012-07-10 14:26 ` Marco
2012-07-10 4:24 ` gautier_niouzes
2012-07-10 5:22 ` Ada novice
2012-07-10 7:27 ` Dmitry A. Kazakov
2012-07-10 8:06 ` gautier_niouzes
[not found] ` <637de084-0e71-4077-a1c5-fc4200cad3cf@googlegroups.com>
2012-07-10 8:39 ` Nasser M. Abbasi
2012-07-10 8:58 ` Ada novice
2012-07-10 9:07 ` Dmitry A. Kazakov
2012-07-10 9:21 ` Nasser M. Abbasi
2012-07-10 9:26 ` Nasser M. Abbasi
2012-07-10 9:50 ` Dmitry A. Kazakov
2012-07-20 1:56 ` Randy Brukardt
2012-07-20 21:49 ` Adam Beneschan
2012-07-12 0:31 ` robin.vowels
2012-07-12 7:12 ` Dmitry A. Kazakov
2012-07-29 13:39 ` Robin Vowels
2012-07-29 14:22 ` Dmitry A. Kazakov
2012-07-29 20:54 ` glen herrmannsfeldt [this message]
[not found] ` <apib1897s56dkultqmfl3emvk1os3tfdak@invalid.netcom.com>
2012-07-30 4:15 ` glen herrmannsfeldt
[not found] ` <nfhd181tv9u87mcqfb7rgd8lm48ihr9f4r@invalid.netcom.com>
2012-07-31 8:53 ` MATRIX MULTIPLICATION Robin Vowels
2012-07-31 9:05 ` Robin Vowels
2012-07-30 0:49 ` Does Ada need elemental functions to make it suitable for scientific work? Robin Vowels
2012-07-12 0:22 ` robin.vowels
2012-07-20 1:51 ` Randy Brukardt
2012-07-29 13:53 ` Robin Vowels
2012-07-29 15:51 ` J-P. Rosen
2012-07-29 16:07 ` Dmitry A. Kazakov
2012-07-29 20:30 ` Simon Wright
2012-07-29 20:59 ` glen herrmannsfeldt
2012-07-29 21:44 ` J-P. Rosen
2012-07-29 22:54 ` Simon Wright
2012-07-30 0:53 ` Robin Vowels
2012-07-30 2:20 ` Shmuel Metz
2012-07-10 12:46 ` Brian Drummond
2012-07-10 11:06 ` Simon Wright
2012-07-10 11:59 ` Georg Bauhaus
2012-07-10 12:20 ` Brian Drummond
2012-07-10 19:52 ` Ada novice
2012-07-11 8:41 ` gautier_niouzes
2012-07-11 9:42 ` Ken Thomas
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