std::atan2

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Defined in header <cmath>

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float       atan2( float y, float x );

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double      atan2( double y, double x );

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long double atan2( long double y, long double x );

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double      atan2( Integral y, Arithmetic x );

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double      atan2( Arithmetic y, Integral x );

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Computes the inverse tangent of y/x using the signs of arguments to correctly determine quadrant.

Parameters

x, y

-

floating point value

Return value

arc tangent of y/x in radians in the range of [-π; π] radians.

See also

Template:cpp/numeric/math/dcl list atanTemplate:cpp/numeric/math/dcl list asinTemplate:cpp/numeric/math/dcl list acosTemplate:cpp/numeric/math/dcl list tan