Visible to Intel only — GUID: GUID-A76A3BC0-61F7-4CA3-A4F0-47E5AFE5057D
Visible to Intel only — GUID: GUID-A76A3BC0-61F7-4CA3-A4F0-47E5AFE5057D
ACOS
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. |
Results
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. |
Example
ACOS (0.68032123) has the value .8225955.