asinh, asinhf---inverse hyperbolic sine#include <math.h> double asinh(double x); float asinhf(float x);Description
asinh calculates the inverse hyperbolic sine of x.
asinh is defined as
asinhf is identical, other than taking and returning floats.
Returns
asinh and asinhf return the calculated value.
Portability
Neither asinh nor asinhf are ANSI C.