TANH — Hyperbolic tangent function#

TANH(X)#

TANH(X) computes the hyperbolic tangent of X.

Parameters:

X – The type shall be REAL or COMPLEX.

Returns:

The return value has same type and kind as X. If X is complex, the imaginary part of the result is in radians. If X is REAL, the return value lies in the range - 1 leq tanh(x) leq 1 .

Standard:

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

Class:

Elemental function

Syntax:
X = TANH(X)
Example:
program test_tanh
  real(8) :: x = 2.1_8
  x = tanh(x)
end program test_tanh
Specific names:

Name

Argument

Return type

Standard

TANH(X)

REAL(4) X

REAL(4)

Fortran 77 and later

DTANH(X)

REAL(8) X

REAL(8)

Fortran 77 and later

See also:

ATANH — Inverse hyperbolic tangent function