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9.7 ACOSD — Arccosine function, degrees

Description:
ACOSD(X) computes the arccosine of X in degrees (inverse of COSD(X)).

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 = ACOSD(X)
Arguments:

X The type shall either be REAL with a magnitude that is less than or equal to one - or the type shall be COMPLEX.

Return value:
The return value is of the same type and kind as X. The real part of the result is in degrees and lies in the range 0 \leq \Re \acos(x) \leq 180.
Example:
          program test_acosd
            real(8) :: x = 0.866_8
            x = acosd(x)
          end program test_acosd

Specific names:

Name Argument Return type Standard
ACOSD(X) REAL(4) X REAL(4) GNU Extension
DACOSD(X) REAL(8) X REAL(8) GNU Extension

See also:
Inverse function: COSD Radians function: ACOS