COSH — Hyperbolic cosine function

Description

COSH(X) computes the hyperbolic cosine of X.

Syntax

X = COSH(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 has a lower bound of one, \cosh (x) \geq 1.

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

Standard

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

Class

Elemental function

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