Reference: dl_install_xsub

dl_install_xsub

dl_install_xsub (perl_name, symref[, filename])

Creates a new Perl external subroutine. Takes the following arguments:

perl_name

Name of the new subroutine.

symref

Pointer to the function that implements the routine.

filename

The source file for the function. If not defined, DynaLoader is used.