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### 8.74 COSD — Cosine function, degrees

Description:

COSD(X) computes the cosine of X in degrees.

This function is for compatibility only and should be avoided in favor of standard constructs wherever possible.

Standard:

GNU extension, enabled with -fdec-math.

Class:

Elemental function

Syntax:

RESULT = COSD(X)

Arguments:
 X The type shall be REAL or COMPLEX.
Return value:

The return value is of the same type and kind as X. The real part of the result is in degrees. If X is of the type REAL, the return value lies in the range -1 \leq \cosd (x) \leq 1.

Example:
program test_cosd
real :: x = 0.0
x = cosd(x)
end program test_cosd

Specific names:
NameArgumentReturn typeStandard
COSD(X)REAL(4) XREAL(4)GNU extension
DCOSD(X)REAL(8) XREAL(8)GNU extension
CCOSD(X)COMPLEX(4) XCOMPLEX(4)GNU extension
ZCOSD(X)COMPLEX(8) XCOMPLEX(8)GNU extension
CDCOSD(X)COMPLEX(8) XCOMPLEX(8)GNU extension