Does the CA Librarian load module coded by C language ?

We are planning to maintain C language and will apply PTFs for that.
So, we want to know whether Librarian has an impact.

We are planning to maintain C language by application PTFs.
Does the CA Librarian load module coded by C language ?

The CA Librarian composite load module is using C language. But, it is not the general C language.
It is the language owned by CA and, needs CA C Runtime of CA Common Services for the execution.

The following CA Common Services for z/OS and OS/390 are required to install and use CA Librarian:
*CAIRIM
*CAISSF
*CA C Runtime

For more information, please see the CA Librarian Installation Guide.