Haha, no it doesn’t. No doubt it has some assembly-language though.
They developed hardware optimized to run FORTRAN, including machine instructions that directly implemented FORTRAN’s distinctive 3-way branch operation.
PRIMOS was all IBM-flavor computer tech. Big-endian, probably in EBCDIC. C was a separate project, from academia, being developed on DEC machines. Little-endian and ASCII.
They didn’t talk to each other.