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`ASINH`

— Inverse hyperbolic sine function*Description*:`ASINH(X)`

computes the inverse hyperbolic sine of`X`.*Standard*:Fortran 2008 and later

*Class*:Elemental function

*Syntax*:`RESULT = ASINH(X)`

*Arguments*:`X`The type shall be `REAL`

or`COMPLEX`

.*Return value*:The return value is of the same type and kind as

`X`. If`X`is complex, the imaginary part of the result is in radians and lies between*-\pi/2 \leq \Im \asinh(x) \leq \pi/2*.*Example*:PROGRAM test_asinh REAL(8), DIMENSION(3) :: x = (/ -1.0, 0.0, 1.0 /) WRITE (*,*) ASINH(x) END PROGRAM

*Specific names*:Name Argument Return type Standard `DASINH(X)`

`REAL(8) X`

`REAL(8)`

GNU extension. *See also*:Inverse function: SINH