Persistent Realities » Home

Site
News
Files

Visual Basic
Strings
Math
General
Properties
Memory
Methods

Inline ASM-VB
Strings
Math
General
Memory

Always use "\" instead of "/"

Major performance gain here! For integer calculations you should always use "" instead of "/" Using "" is faster because if you divide by "/" the values will first be converted to singles. So for Sin/Cos/Tan operation you should still use "/" if you want to have precision.

Code: Public Sub TestOne() Dim intResult As Integer '//Floating point division intResult = 100 / 50 End Sub Public Sub TestTwo() Dim intResult As Integer '//Integer division intResult = 100 50 End Sub

100 / 50 % faster than 100 50	100 / 50 (sec)	100 50 (sec)
548%	0,045475	0,007018
568,2%	0,046955	0,007027
549,3%	0,046190	0,007114
589%	0,050495	0,007328
463,6%	0,045453	0,008064

User contributed notes:

Author: Cloral ()	Date: 22:04 16/04/2004
Once again, the \ needs to be fixed. \ is an escape character, so you need to do \\ for it to display one.
Author: Almar Joling ()	Date: 22:04 16/04/2004
I know, but for the moment I don't have the time to do so.
Author: Paul ()	Date: 10:05 19/05/2004
I've tried it and it seems \\ doesn't work for doubles. 10/3 gives 3.333333 10\\3 gives 3
Author: Almar Joling ()	Date: 10:05 19/05/2004
Yes, because it's an integer calculation with \. It will not return floating ponit values, hence why it's faster to use this for integer operations. :)
Author: Paddo Swam (paddoswam at gmail dot com)	Date: 15:03 08/03/2005
the \\ is only to show it in the PHP code ;) The vb code one should be \ and /
Author: Almar ()	Date: 19:03 08/03/2005
Exactly. :)
Author: TheShau (shauros at walla dot com)	Date: 14:08 04/08/2006
Well, using "\" is one processor operation (div or idiv) not considering type casts, and "/" is a floating point operation which are much longer, of course.