Scalar. Returns the arctangent of the quotient of two given values.
Syntax
atan2 ( value1, value2 )
Parameters
| value1 |
A float.
|
| value2 |
A float.
|
Usage
Returns the arctangent of the quotient of the given values, within the range of the standard arctangent function:
- If value2 > 0, then atan2 (value1, value2) returns the value of atan (value1/value2).
- If value1 >= 0 and value2 < 0, then atan2 (value1, value2) returns the value of atan (value1/value2) + pi().
- If value1 < 0 and value2 < 0, then atan2 (value1, value2) returns the value of atan (value1/value2) - pi().
- If value1 > 0 and value2 = 0, then atan2 (value1, value2) returns the value of pi()/2.
- If value1 < 0 and value2 = 0, then atan2 (value1, value2) returns the value of -pi()/2.
- If value1 = value2 = 0, then atan2 (value1, value2) returns 0.
Example
atan2 ( 1, 2) returns 0.463647609, the value of atan (0.5).