COS — Cosine function#
-
COS(X)#
COS(X)
computes the cosine ofX
.- Parameters:
X – The type shall be
REAL
orCOMPLEX
.- Returns:
The return value is of the same type and kind as
X
. The real part of the result is in radians. IfX
is of the typeREAL
, the return value lies in the range -1 leq cos (x) leq 1.
- Standard:
Fortran 77 and later, has overloads that are GNU extensions
- Class:
Elemental function
- Syntax:
RESULT = COS(X)
- 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
- See also:
Inverse function: ACOS — Arccosine function Degrees function: COSD — Cosine function, degrees