R: Confluent hypergeometric1F1 function

hypergeometric1F1 {BAS} | R Documentation

## Confluent hypergeometric1F1 function

### Description

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)

### Author(s)

Merlise Clyde (clyde@stat.duke.edu)

### References

Cephes library hyp1f1.c

### See Also

Other special functions: `hypergeometric2F1()`, `phi1()`, `trCCH()`

### Examples

    hypergeometric1F1(11.14756, 0.5, 0.00175097)

[Package BAS version 1.6.2 Index]