Compute the Confluent Hypergeometric function: 1F1(a,b,c,t) =
Gamma(b)/(Gamma(b-a)Gamma(a)) Int_0^1 t^(a-1) (1 - t)^(b-a-1) exp(c t) dt
Usage
hypergeometric1F1(a, b, c, laplace = FALSE, log = TRUE)
Arguments
- a
arbitrary
- b
Must be greater 0
- c
arbitrary
- laplace
The default is to use the Cephes library; for large a or s
this may return an NA, Inf or negative values,, in which case you should use
the Laplace approximation.
- log
if TRUE, return log(1F1)
References
Cephes library hyp1f1.c
Examples
hypergeometric1F1(11.14756, 0.5, 0.00175097)
#> [1] 0.03856253
