COSH — Hyperbolic cosine function#

COSH(X)#

COSH(X) computes the hyperbolic cosine 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 has a lower bound of one, cosh (x) geq 1.

Standard:

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

Class:

Elemental function

Syntax:
X = COSH(X)
Example:
program test_cosh
  real(8) :: x = 1.0_8
  x = cosh(x)
end program test_cosh
Specific names:

Name

Argument

Return type

Standard

COSH(X)

REAL(4) X

REAL(4)

Fortran 77 and later

DCOSH(X)

REAL(8) X

REAL(8)

Fortran 77 and later

See also:

Inverse function: ACOSH — Inverse hyperbolic cosine function