Calculates the arctangent.
double atan (double x);
Required Header |
<math.h> |
Return Value
This function returns the arctangent of a double in radians.
Parameters
x
The value to be converted
Remarks
The atan function calculates the arctangent of x to 15 digits of precision.
See Also asin, acos, atan2, cos, sin, tan, sinh, cosh, tanh, cot