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Re: Code refactoring: simple trig, but it's been so long.

by tachyon (Chancellor)
on Dec 30, 2004 at 02:08 UTC ( [id://418156]=note: print w/replies, xml ) Need Help??

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  1. or download this
    my $ninety_degrees = atan(1)*2;
  2. or download this
    sub atan {
    return 0 if $_[0]==0;
...
         atan2(sqrt(1+$_[0]*$_[0]),sqrt(1+1/($_[0]*$_[0]))) :
        -atan2(sqrt(1+$_[0]*$_[0]),sqrt(1+1/($_[0]*$_[0])));
}

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