atan2()

[Thomas Hameenaho]

I presume you've included <math.h>

The man page for atan2 on our pyramid says that:
atan returns values in the range -pi/2 through pi/2 while
atan2 returns in the range -pi through pi.

Can this be your problem?
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Real life:	Thomas Hameenaho		Email:	thomas at uplog.se
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