See getopt(3): returns int, so store it in an int variable. I went through all occurrences, project-wide. All return values of getopt() should be stored in ints now.
This directory contains unitary testbenches/Monte Carlo Simulators for physical/transport channel processing: pbchsim.c // PBCH simulation testbench pdcchsim.c // PDCCH (DCI) simulation testbench, PCFICH + PHICH too (incomplete) dlsim.c // PDSCH simulation testbench ulsim.c // PUSCH simulation testbench pucchsim.c // PUCCH simulation testbench framegen.c // eNB Frame generator