Description

   asinh()
   returns the hyperbolic arc sine of x for x in the interval
   [-infinity, +infinity]. asinh(x) = ln(x + sqrt(x**2 + 1)).

   asinh() is the inverse function of sinh().  asinh(sinh (x)) = x.


                          Entry-Point Names

   Generic
   Function   Data Type   OpenVMS        Tru64 UNIX
   Name       Required

   asinh      S_FLOAT     math$asinh_s   asinhf
              T_FLOAT     math$asinh_t   asinh
              X_FLOAT     math$asinh_x   asinhl
              F_FLOAT     math$asinh_f
              G_FLOAT     math$asinh_g