Intel® Fortran Compiler 17.0 Developer Guide and Reference
Elemental Intrinsic Function (Generic): Produces the arctangent of an argument.
result = ATAN (x)
x |
(Input) Must be of type real. |
The result type and kind is the same as x and is expressed in radians. The value lies in the range -pi/2 to pi/2.
Specific Name |
Argument Type |
Result Type |
|---|---|---|
ATAN |
REAL(4) |
REAL(4) |
DATAN |
REAL(8) |
REAL(8) |
QATAN |
REAL(16) |
REAL(16) |
ATAN (1.5874993) has the value 1.008666.