Platform | x64, Win32, .NET |
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Purpose |
To get the Arctangent (inverse tangent) from the arguments. |
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Class |
Elemental function. |
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Syntax |
REAL FUNCTION ATAN2(Y,X) |
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Description |
(X, Y) are cartesian coordinates and the result is the value of Arctangent(Y/X). If Y>0, the result is positive. If Y=0, the result is zero if X>0 and p if X<0. If Y<0, the result is negative. If X=0, the absolute value of the result is p/2. The arguments must not both have the value zero. |
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Return value |
The result is given in radians in the range - p < result < p . |