Arccosine (inverse cosine) function.
Elemental function
Same as X.
If X is of type real, the result value is as follows:
ACOS(1.0) has the value 0.0.
ACOS((0.540302, 0.000000)) has the value (1.000000, 0.000000), approximately.
Specific Name | Argument Type | Result Type | Pass As Arg? |
---|---|---|---|
ACOS | default real | default real | yes |
DACOS | double precision real | double precision real | yes |
QACOS 1 | REAL(16) | REAL(16) | yes |
QARCOS 1 | REAL(16) | REAL(16) | yes |