code: def _sim_atoi_inner(self, str_addr, region, base=10, read_length=None):
          
  
          from .. import SIM_PROCEDURES
          strtol = SIM_PROCEDURES['libc']['strtol']
  
          return strtol.strtol_inner(str_addr, self.state, region, base, True, read_length=read_length)
docs: Return the result of invoking the atoi simprocedure on `str_addr`.