How to call kummerU for a stand alone program

Can someone help me with the question how to call the Matlab function kummerU used in an application which I want to compile for stand alone use?

Thanks in advance,

Ed Veling

Matlab, R2025a

[Ed Veling]

Thanks for all respondents.

Since I need a script for the KummerU(a,b,z) function for complex a and z, I can not use the suggestions.

Answer 1

[Walter Roberson]

Unfortunately, kummerU is defined strictly by the Symbolic Toolbox, and nothing in the Symbolic Toolbox can be compiled.

You would need to take a different approach, such as explicitly calculating the integral; https://www.mathworks.com/help/symbolic/sym.kummeru.html#description

[Walter Roberson]

The GNU Sclientific Library has a function for this calculation.

double gsl_sf_hyperg_U_int (int m, int n, double x)

int gsl_sf_hyperg_U_int_e (int m, int n, double x, gsl sf result *result)

These routines compute the confluent hypergeometric function U (m, n, x) for integer parameters m, n

Answer 2

[Torsten]

As far as I know, nothing in the symbolic toolbox can be compiled. And "kummerU" is a symbolic function ...

Try to find a reliable numerical implementation of the function.

Answer 3

[John D'Errico]

You cannot do it from MATLAB, as stated by others. However, it looks like python does offer similar functionality. And I believe you can compile python code.

https://docs.scipy.org/doc/scipy/reference/generated/scipy.special.hyperu.html

Perhaps this is a route you can take.