NAME
    asinh - hyperbolic arc sine

SYNOPSIS
    asinh(x [,acc])

TYPES
    x		real
    acc		real

    return	real

DESCRIPTION
    Calculate the hyperbolic arc sine of x with an accuracy within eps.
    By default, eps is epsilon().

    The hyperbolic arccosine is calculated using the formula:

	asinh(x) = ln(x + sqrt(x^2 + 1))

EXAMPLE
    > print asinh(1), asinh(3^29+1), asinh(3^29+1, 1e-100)
    ~.88137358701954302523 ~32.55290355193514093067 ~32.55290355193514093068

LIMITS
    acc > 0

LIBRARY
    NUMBER *qasinh(NUMBER *x, *acc)

SEE ALSO
    acosh, atanh, cosh, epsilon, sinh, tanh
