XL Fortran for AIX 8.1
Language Reference
Cosine function.
- X
- must be of type real or complex.
Class
Elemental function
Result Type and Attributes
Same as X.
Result Value
- It has a value that approximates cos(X).
- If X is of type real, X is regarded as a value in radians.
- If X is of type complex, the real part of X is regarded as a value in
radians.
Examples
COS (1.0) has the value 0.54030231 (approximately).
| Specific Name
| Argument Type
| Result Type
| Pass As Arg?
|
| COS
| default real
| default real
| yes
|
| DCOS
| double precision real
| double precision real
| yes
|
| QCOS (1)
| REAL(16)
| REAL(16)
| yes
|
| CCOS (2a)
| default complex
| default complex
| yes
|
| CDCOS (1) (2b)
| double complex
| double complex
| yes
|
| ZCOS (1) (2b)
| double complex
| double complex
| yes
|
| CQCOS (1) (2b)
| COMPLEX(16)
| COMPLEX(16)
| yes
|
Notes:
- IBM Extension.
- Given that X is a complex number in the form a + bi, where
i = (-1)½:
- abs(b) must be less than or equal to 88.7228; a is any real
value.
- abs(b) must be less than or equal to 709.7827; a is any real
value.
- Given that X is a complex number in the form a + bi, where
i = (-1)½,
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