pub fn dgamma(x: f64, shape: f64, scale: f64, give_log: bool) -> f64Expand description
AUTHOR Catherine Loader, catherine@research.bell-labs.com. October 23, 2000.
Merge in to R: Copyright (C) 2000-2019 The R Core Team Copyright (C) 2004-2019 The R Foundation
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You should have received a copy of the GNU General Public License along with this program; if not, a copy is available at https://www.R-project.org/Licenses/ Computes the density of the Gamma distribution.
_ 1/s (x/s)^{a-1} exp(-x/s) p(x;a,s) = ———————– _ (a-1)!
where ‘s’ is the scale (= 1/lambda in other parametrizations) and ‘a’ is the shape parameter ( = alpha in other contexts).