atan2 - arctangent of Y/X in the range -PI to PI


NAME

atan2 - arctangent of Y/X in the range -PI to PI


SYNOPSIS

atan2 Y,X


DESCRIPTION

Returns the arctangent of Y/X in the range -PI to PI.

For the tangent operation, you may use the Math::Trig::tan function, or use the familiar relation:

    sub tan { sin($_[0]) / cos($_[0])  }

Note that atan2(0, 0) is not well-defined.

 atan2 - arctangent of Y/X in the range -PI to PI