8.240 TAN — Tangent function

Description:

TAN(X) computes the tangent of X.

Standard:

Fortran 77 and later, for a complex argument Fortran 2008 or later

Class:

Elemental function

Syntax:

RESULT = TAN(X)

Arguments:

X	The type shall be REAL or COMPLEX.

Return value:

The return value has same type and kind as X.

Example:

          program test_tan
            real(8) :: x = 0.165_8
            x = tan(x)
          end program test_tan

Specific names:

Name	Argument	Return type	Standard
TAN(X)	REAL(4) X	REAL(4)	Fortran 95 and later
DTAN(X)	REAL(8) X	REAL(8)	Fortran 95 and later

See also:

ATAN