x86 - SSE multiplication of 2 64-bit integers -


how multiply 2 64-bit integers 2 64-bit integers? didn't find instruction can it.

you need implement own 64 bit multiplication routine using 32 bit multiply operations. it's not going more efficient doing scalar code though, particularly there lot of shuffling of vectors required operations.


Comments

Post a Comment

Popular posts from this blog

How to logout from a login page in asp.net -

whenever click on logout button redirect me login page when im clicking on button redirect me last visited page. not using membership or windows authentication. session.abandon(); response.cache.setcacheability(httpcacheability.private); response.cache.setcacheability(httpcacheability.nocache); response.redirect("loginform.aspx"); if using session destroy session value on logout button click , can put check in app webpages if(session["sessionvaribale"].equals(null)) { response.redirect("logoutpage url"); }
Read more

Stack level too deep error after upgrade to rails 3.2 and ruby 1.9.3 -

i'm upgrading rails 3.0.9 app 3.2.13 , ruby 1.8.7 1.9.3. time try access controller action, following error started "/myapp/login" 127.0.0.1 @ 2013-07-25 07:10:06 -0600 systemstackerror (stack level deep): actionpack (3.2.13) lib/action_dispatch/middleware/reloader.rb:70 rendered /actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.5ms) rendered /actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (5.2ms) rendered /actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (22.6ms) the way i've been able page load without error clear out database sessions (rake db:sessions:clear) , restart rails server. allows 1 single request succeed , subsequent requests fail. i've tried comparing core config files working 3.2 app , have tried upgrade of gems. here's current gemfile: source 'http://rubygems.org' gem 'rails...
Read more