Intel® Fortran Compiler 18.0 Developer Guide and Reference
Elemental Intrinsic Function (Generic): Produces the arccosine of x.
result = ACOS (x)
x |
(Input) Must be of type real, where | x | must be less than or equal to 1, or of type complex. |
The result type and kind are the same as x and is expressed in radians.
If the result is real, the value is expressed in radians and lies in the range 0 <= ACOS(X) <= pi.
If the result is complex, the real part is expressed in radians and lies in the range 0 <= REAL(ACOS (x)) <= pi.
Specific Name |
Argument Type |
Result Type |
|---|---|---|
ACOS 1 |
REAL(4) |
REAL(4) |
DACOS 1 |
REAL(8) |
REAL(8) |
QACOS 2 |
REAL(16) |
REAL(16) |
1The setting of compiler options specifying real size can affect ACOS and DACOS. 2Or QARCOS. |
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ACOS (0.68032123) has the value .8225955.