gammapDer: derivative of gammap

Source: R/utils.R

This is the gamma_p_derivative from the boost library

gammapDer(a, z)

Arguments

a

The numeric 'a' parameter in the upper incomplete gamma
z

The numeric 'z' parameter in the upper incomplete gamma

Value

lowergamma results

Author

Matthew L. Fidler

Examples


gammapDer(1:3, 3)
#> [1] 0.04978707 0.14936121 0.22404181

gammapDer(1, 1:3)
#> [1] 0.36787944 0.13533528 0.04978707