It is quite straightforward to use the assembler on any host to generate
a shared library suitable for use with cd. There is no need or benefit
to add the considerable complicaton of having the binary in the J data
space as nouns.
----- Original Message -----
From: "Miller, Raul D" <[EMAIL PROTECTED]>
To: "Programming forum" <[email protected]>; "Programming forum"
<[email protected]>
Sent: Sunday, September 03, 2006 9:04 PM
Subject: RE: [Jprogramming] Symmetric inner and outer products
Henry Rich wrote:
For arithmetic operations in general, it would also be
a much better use of coding time to take advantage of
the SSE3 instructions.
Since SSE3 would fail on all CPU lines released before 2004 (and many
released before 2005), this seems to mean that you are suggesting that
J's arithmetic core be doubled -- with a side-by-side implementation
of
SSE3 support and non-SSE3 support?
Perhaps more useful would be some documentation on how to construct
and call user-defined machine language code from within J. (I'm
thinking
something different from cd here -- I'm thinking: let's generate a
sequence
of literals in J which are the machine code -- how do you call such a
thing
as a function from within J?)
--
Raul
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