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[avr-libc-dev] new atan() and atan2() functions

From: Joerg Wunsch
Subject: [avr-libc-dev] new atan() and atan2() functions
Date: Sun, 22 Dec 2002 22:05:54 +0100
User-agent: Mutt/1.2.5i

Hello all,

Reiner Patommel provided completely rewritten implementations for
atan() and atan2() which i've just checked in.  Accuracy is a lot
better in particular for large arguments (where the result becomes
close to Pi/2), but even for smaller arguments, the previous
implementation often experienced errors in the range of 1E-5.

Together with the already rewritten asin() function, the accuracy of
our trigonometrical functions should now be close to what can be
expected from a 32-bit IEEE implementation.
J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/

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