COS (The GNU Fortran Compiler) (original) (raw)
8.73 COS — Cosine function ¶
Synopsis:
RESULT = COS(X)
Description:
COS(X) computes the cosine of X.
Class:
Elemental function
Arguments:
| X | The type shall be REAL orCOMPLEX. |
|---|
Return value:
The return value is of the same type and kind as X. The real part of the result is in radians. If X is of the type REAL, the return value lies in the range -1 \leq \cos (x) \leq 1.
Example:
program test_cos real :: x = 0.0 x = cos(x) end program test_cos
Specific names:
| Name | Argument | Return type | Standard |
|---|---|---|---|
| COS(X) | REAL(4) X | REAL(4) | Fortran 77 and later |
| DCOS(X) | REAL(8) X | REAL(8) | Fortran 77 and later |
| CCOS(X) | COMPLEX(4) X | COMPLEX(4) | Fortran 77 and later |
| ZCOS(X) | COMPLEX(8) X | COMPLEX(8) | GNU extension |
| CDCOS(X) | COMPLEX(8) X | COMPLEX(8) | GNU extension |
Standard:
Fortran 77 and later, has overloads that are GNU extensions
See also:
Inverse function:
ACOS — Arccosine function
Degrees function:
COSD — Cosine function, degrees