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DarkBASIC Discussion / Which is better?

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Hamish McHaggis
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Posted: 25th Jan 2003 17:33
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I've recently noticed that the command "newxvalue(x#,a#,s#)" is longer to type than its mathamatical equivilent "sin(a#)*s#". Is there actually any difference in how they do the calculations or the speed at which they do them, or is it just a command for people haven't learnt trig?
Thanks!!
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The Darthster
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Posted: 26th Jan 2003 01:08
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By running this program:



I found that 3.6 million calculations using x#+(sin(a#)*s#) takes 530ms when compared to the 19311000ms it takes using newxvalue(x#,a#,s#). Sin is faster than newxvalue. Newxvalue just appears to be a substitute for people who can't use sin and cos.
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Easily Confused
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Posted: 26th Jan 2003 02:24
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I have to correct you Darthstar, line 6 should be r# = timer(), you forgot the brackets.



...as a result, I find newxvalue() is fractionly faster.

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.
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Easily Confused
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Posted: 26th Jan 2003 02:26
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Darthstar!! Whoops! I mean Darthster. (sigh) I need glasses

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.
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empty
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Posted: 26th Jan 2003 04:07
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Yup, 19311000ms are more than 5 hours.

Ogres have layers.
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Hamish McHaggis
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Posted: 26th Jan 2003 22:26
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Actually, I think you'll find that sin() is fractionally faster than newxvalue().

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Easily Confused
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Posted: 26th Jan 2003 22:39
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I tested the above in DBPro which shows me the newxvalue() is a tad quicker. There may be a slight difference between DB's and DBPro's handling of newxvalue(), or it might be due to the way float operations are handled on my AMD.

Programming anything is an art, and you can't rush art.
Unless your name is Bob Ross, then you can do it in thirty minutes.
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The Darthster
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Posted: 26th Jan 2003 23:36
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Oops, sorry about that. Newxvalue is faster by 100ms on my Athlon 2000+. I'm still used to QBasic where timer doesn't need brackets.
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