9.74 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:

Name	Argument	Return type	Standard
COSD(X)	REAL(4) X	REAL(4)	GNU Extension
DCOSD(X)	REAL(8) X	REAL(8)	GNU Extension
CCOSD(X)	COMPLEX(4) X	COMPLEX(4)	GNU Extension
ZCOSD(X)	COMPLEX(8) X	COMPLEX(8)	GNU extension
CDCOSD(X)	COMPLEX(8) X	COMPLEX(8)	GNU extension

See also:

Inverse function: ACOSD Radians function: COS