インテル® Fortran コンパイラー 19.0 デベロッパー・ガイドおよびリファレンス
Elemental Intrinsic Function (Generic): Produces the hyperbolic arctangent of x.
result = ATANH (x)
x |
(Input) Must be of type real, where | x | is less than or equal to 1, or of type complex. |
The result type and kind are the same as x.
If the result is real, it lies in the range -1.0 < ATANH (x) < 1.0.
If the result is complex, the imaginary part is expressed in radians and lies in the range –pi/2 <= AIMAG (ATANH (x)) <= pi/2.
Specific Name |
Argument Type |
Result Type |
|---|---|---|
ATANH |
REAL(4) |
REAL(4) |
DATANH |
REAL(8) |
REAL(8) |
QATANH |
REAL(16) |
REAL(16) |
ATANH (-0.77) has the value -1.02033.
ATANH (0.5) has the value 0.549306.