compute arc tangent
Description
r3 atan(r1, r2)
atan(r1, r2) produces the arc tangent of r1 / r2 in the range of –π to π with the sign
of r1.
Parameters
- r1
- real, dividend of optional divide, or argument to be converted
- r1
- real, divisor of optional divide
Defaults
- r2
- 1.0
Errors
See Also
