Computes the first risk measure due to Stone (1973)
stoneg1(spec, x0, k, a, b, ...)
a character string specifying the distribution (for example, "norm" corresponds to the standard normal)
a real valued parameter, see Chan and Nadarajah for details
a positive valued parameter, see Chan and Nadarajah for details
the lower end point of the distribution specified by spec
the upper end point of the distribution specified by spec
other parameters
A scalar, giving Stone (1973)'s first risk measure of the distribution specified by spec
S. Chan and S. Nadarajah, Risk: An R package for risk measures, submitted
B. K. Stone, A general class of three-parameter risk measuresm, The Journal of Finance, 28, 1973, 675-685 <DOI:10.2307/2978638>