Re: Fast atan2

• Subject: Re: Fast atan2
• From: rick <email@hidden>
• Date: Thu, 20 Jan 2005 19:46:55 +0000
• Delivered-to: email@hidden
• Delivered-to: email@hidden

http://www.dspguru.com/comp.dsp/tricks/alg/fxdatan2.htm

On 18 Jan 2005, at 23:56, Robert Purves wrote:

Shark indicates that an important bottleneck in my app is
angle = atan2( y, x );
Does anyone know of a fast approximate atan2 algorithm (like those delightfully sleazy hacks for sqrt and its reciprocal)?
I don't need anything like full double, or even single, precision. An absolute error of 1e-4 would be acceptable.

Robert P.

r i c k

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