C++11 in LibreOffice

[Kohei Yoshida]

On 07/19/2012 11:26 AM, Michael Meeks wrote:
>
> On Thu, 2012-07-19 at 16:04 +0200, Michael Stahl wrote:
>> i'm saying it doesn't benefit from the "sophisticated" optimizations that
>> vendor compilers like SunStudio or Intel do that speed up your BLAS
>> stuff with gigabytes of floating point arrays by X times because office
>> suites don't contain gigabytes of floating point arrays.
>
> 	So - Kohei has been working for years to turn Calc spreadsheets into
> gigabyte arrays of floating point numbers - precisely to take advantage
> of this sort of optimisation :-)

Just wrote a blog post explaining some of that.

http://kohei.us/2012/07/20/mdds-multi_type_vector-explained/

Almost 2 years in the making (well, that also includes one year of just 
thinking about it idly with no code), I'm glad I've finally got this one 
off my shoulder. :-)

But no doubt more work is ahead to further optimize this structure.

Also, ScMatrix's new backend now uses it.  My hope is to use ScMatrix as 
a test-drive and try to get all its kinks sorted out before using this 
to store cells in ScColumn.

Best,

Kohei

-- 
Kohei Yoshida, LibreOffice hacker, Calc