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Calculates the arctangent of _Y/_X
inline float atan2f(
   float _Y,
   float _X
) restrict(amp);
Parameters
- _Y 
 Floating-point value
- _X 
 Floating-point value
Return Value
Returns the arctangent value of _Y/_X
Requirements
Header: amp_math.h
Namespace: Concurrency::fast_math