func CdfGammaQinv(q float64, a float64, b float64) float64 { return float64(C.gsl_cdf_gamma_Qinv(C.double(q), C.double(a), C.double(b))) }
// GammaQinv returns the cumulative distribution function Qinv(x) for // the upper tail of a gamma distribution. func GammaQinv(Q, a, b float64) float64 { return float64(C.gsl_cdf_gamma_Qinv(C.double(Q), C.double(a), C.double(b))) }