ATAND — Arctangent function, degrees#

ATAND(X)#

ATAND(X) computes the arctangent of X in degrees (inverse of TAND).

Parameters:

  • X – The type shall be REAL or COMPLEX ; if Y is present, X shall be REAL.

  • Y – The type and kind type parameter shall be the same as X.

Returns:

The return value is of the same type and kind as X. If Y is present, the result is identical to ATAND2(Y,X). Otherwise, it is the arcus tangent of X, where the real part of the result is in degrees and lies in the range -90 leq Re atand(x) leq 90.

Standard:

GNU extension, enabled with -fdec-math.

Class:

Elemental function

Syntax:
RESULT = ATAND(X)
RESULT = ATAND(Y, X)
Example:
program test_atand
  real(8) :: x = 2.866_8
  x = atand(x)
end program test_atand
Specific names:

Name

Argument

Return type

Standard

ATAND(X)

REAL(4) X

REAL(4)

GNU extension

DATAND(X)

REAL(8) X

REAL(8)

GNU extension
See also:

Inverse function: TAND Radians function: ATAN