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/GNU Fortran 7

9.263 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, and its value is in radians.

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:

Inverse function: ATAN Degrees function: TAND

© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gfortran/TAN.html