Internal function. Converts alpha values to h values.
Usage
quanff(alpha,n,p)
Arguments
alpha
a value in [1/2,1].
n,p
integers.
Value
returns an integer.
References
Hubert, M., Rousseeuw, P.J. and Verdonck, T. (2012),
"A deterministic algorithm for robust location and scatter", Journal of
Computational and Graphical Statistics, in press.