atan2 |
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atan2 |
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atan2 |
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atan2 |
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double atan2( double y, double x )
double y; /* double value */ double x; /* double value */
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Synopsis |
#include "math.h"
The atan2 function returns the value, in radians, of the arc tangent, or tan-1 of y/x .
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Parameters |
x and y may not both be zero.
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Return Value |
if they x and y are both 0, then atan2 returns 0.0, and sets errno (the system error variable) to EDOM. Otherwise, atan2 returns a value in the range of [-π, π].
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See Also |
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