From: Damian Yerrick <MYNAMEISd_yerrick AT hotmail DOT comNO2CANNEDHAM>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: newbee: sin & cos?
Organization: Pin Eight Software  http://pineight.8m.com/
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NNTP-Posting-Date: Mon, 31 Jan 2000 21:33:05 GMT
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Date: Mon, 31 Jan 2000 21:33:05 GMT
To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

On Mon, 31 Jan 2000 21:48:57 -0800, Bram de Greve
<bram DOT degreve AT rug DOT ac DOT be> wrote:

>OK, I'm a bit late, but thanks a lot to everybody who answered my question,
>
>BUT WHAT MEANS ATAN2 AND CEIL ?

atan2() finds the anticlockwise radian angle between the +x axis
and a given vector. (Stands for arctangent of 2-dimensional vector)
ceil() produces the integer above a real number.
  ceil(5.0) = 5; ceil(5.01) = 6; ceil(5.7) = 6; ceil(-5.5) = -5

>btw, where can you find such information anyway?

info libc alpha ceil

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