The non-regularized incomplete gamma functions gamma(a, x) and Gamma(a, x) and their logs.
Equivalent to pracma::gammainc() in R. pracma::gammainc(x, a) returns them as lowinc and uppinc;
in base R they are pgamma(x, a) * gamma(a) and pgamma(x, a, lower.tail = FALSE) * gamma(a).
The non-regularized incomplete gamma functions gamma(a, x) and Gamma(a, x) and their logs. Equivalent to
pracma::gammainc()in R.pracma::gammainc(x, a)returns them aslowincanduppinc; in base R they arepgamma(x, a) * gamma(a)andpgamma(x, a, lower.tail = FALSE) * gamma(a).