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/GNU Fortran 7

9.265 TANH — Hyperbolic tangent function

Description:

TANH(X) computes the hyperbolic tangent of X.

Standard:

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

Class:

Elemental function

Syntax:

X = TANH(X)

Arguments:
X The type shall be REAL or COMPLEX.
Return value:

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 .

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 95 and later
DTANH(X) REAL(8) X REAL(8) Fortran 95 and later
See also:

ATANH

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