## COSH intrinsic function

### Standard: F77 F90 F95 F2003 F2008 F2018 Example program

### ＜Syntax＞

COSH ( X )

X : Real or Complex;

Result : Same type and kind as X.

### ＜Semantics＞

The value of the result is an approximation to the hyperbolic cosine of X.
Like many intrinsic functions, this is **elemental**; the result has the same shape as X, with the operation being applied elementwise.

If X is of type Complex, its imaginary part is an angle in radians. Note that COSH(X) is identical to COS((0,1)*X).