Comments on: Optimizing stuff again http://www.colino.net/wordpress/archives/2006/08/25/optimizing-stuff-again/ news for few, stuff no-one cares about Mon, 23 Jan 2012 19:44:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: chat-loupe http://www.colino.net/wordpress/archives/2006/08/25/optimizing-stuff-again/comment-page-1/#comment-19843 chat-loupe Wed, 30 Aug 2006 16:40:40 +0000 http://www.colino.net/wordpress-1.5/archives/2006/08/25/optimizing-stuff-again/#comment-19843 Il fallait y penser ! Bravo. Il fallait y penser ! Bravo.

]]> By: Colin http://www.colino.net/wordpress/archives/2006/08/25/optimizing-stuff-again/comment-page-1/#comment-19404 Colin Fri, 25 Aug 2006 19:37:12 +0000 http://www.colino.net/wordpress-1.5/archives/2006/08/25/optimizing-stuff-again/#comment-19404 Yes - sprintf("%.2f", size), for example, used for filling the Size column, is really slow. "%.2f" is a format modifier meaning "float number with two digits after the comma". It's faster to use sprintf("%d.%d", a, b) and use a simple integer division to get the part before the comma, then a multiplication of the remainer by the rest, then a re-division to keep one number after the comma. - Faster enough to warrant the hassle ! Yes – sprintf(“%.2f”, size), for example, used for filling the Size column, is really slow. “%.2f” is a format modifier meaning “float number with two digits after the comma”.

It’s faster to use sprintf(“%d.%d”, a, b) and use a simple integer division to get the part before the comma, then a multiplication of the remainer by the rest, then a re-division to keep one number after the comma. – Faster enough to warrant the hassle !

]]> By: chat-loupe http://www.colino.net/wordpress/archives/2006/08/25/optimizing-stuff-again/comment-page-1/#comment-19402 chat-loupe Fri, 25 Aug 2006 19:19:39 +0000 http://www.colino.net/wordpress-1.5/archives/2006/08/25/optimizing-stuff-again/#comment-19402 Youpi ^_^ (even if I don't understand what you say :-p %f is slow ?? ) Youpi ^_^
(even if I don’t understand what you say :-p %f is slow ?? )

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