Re: [Mplapack-devel] Adjusting qd_real?

[Tony S. <sco...@ya...>]

Helo Nakata Maho
I did subscribe as tc...@gm... but unfortunately because of a filter in mainland China,I cannot readily access it.  I put in place a forward of my gmail account to my yahoo account.I will re-subscribe under my yahoo account.
But please tell me bow to build and use mpack so that I can use double-double eigenvaluesolvers.
best wishes
Tony
      From: Nakata Maho <mah...@gm...>
 To: sco...@ya... 
Cc: mpl...@li... 
 Sent: Saturday, November 22, 2014 5:59 PM
 Subject: Re: Adjusting qd_real?
   
Hi
sorry, your e-mail has been deferred as @yahoo.com...
you should subscribe the list.

anyway,

> I see previous messages claiming that double-double works but I would like to know how.
> Does the build require CUDA?
no. internally it uses double-double library developed by Hida et al.

I have just back from US so bit tired. I'll reply in the next week.
thanks
 Nakata Maho



From: Tony Scott <sco...@ya...>
Subject: Adjusting qd_real?
Date: Fri, 21 Nov 2014 06:41:34 +0000 (UTC)

> Hello again
> Still no documentation but by attrition, I figured out some of my previous problems.  
> I needed to switch on the FORTRAN wrapper for IFORT and through a GMP test case work out the link to the libraries.  
> I also managed to get the examples in dd and gmp working.  I got D. Bailey's qd packageand enabled qd in mpack only to find that 
> -> mblas.h in the 'include' sub-directory has  qd_real = REAL i.e. single precision which is NOT quad  i.e. double-double precision
> If I change it to  e.g. qd_real to e.g. LONG DOUBLE or ____FLOAT128, I canconfigure but the make creates an error on the first BLAS routine it tries to compile.
> I see previous messages claiming that double-double works but I would like to know how.
> Does the build require CUDA?
> Can someone tells me how to make build the libraries so that I can get double-doubleprecision for MBLAS and MLAPACK?
> email is: 279...@qq...
> best wishes and thanks in advance
> (some documentation would also be nice:-) )
>