code: def interpret(self, expr):
      self._cg.reset_state()
      self._reset_reused_expr_cache()
  
      args = [(True, self._feature_array_name)]
  
      # C doesn't allow returning vectors, so if model returns vector we will
      # have additional vector argument which we will populate at the end.
      if expr.output_size > 1:
          args += [(True, "output")]
  
      with self._cg.function_definition(
          name=self.function_name,
          args=args,
          is_scalar_output=expr.output_size == 1,
      ):
          last_result = self._do_interpret(expr)
  
          if expr.output_size > 1:
              self._cg.add_assign_array_statement(
                  last_result, "output", expr.output_size
              )
          else:
              self._cg.add_return_statement(last_result)
  
      current_dir = Path(__file__).absolute().parent
  
      if self.with_linear_algebra:
          filename = current_dir / "linear_algebra.c"
          self._cg.prepend_code_lines(get_file_content(filename))
  
      if self.with_softmax_expr:
          filename = current_dir / "softmax.c"
          self._cg.prepend_code_lines(get_file_content(filename))
  
      if self.with_sigmoid_expr:
          filename = current_dir / "sigmoid.c"
          self._cg.prepend_code_lines(get_file_content(filename))
  
      if self.with_vectors:
          self._cg.add_dependency("<string.h>")
  
      if self.with_math_module:
          self._cg.add_dependency("<math.h>")
  
      return self._cg.finalize_and_get_generated_code()
  
file_path: m2cgen/m2cgen/interpreters/c/interpreter.py
imports: from pathlib import Path
  from m2cgen.ast import BinNumOpType
  from m2cgen.interpreters.c.code_generator import CCodeGenerator
  from m2cgen.interpreters.interpreter import ImperativeToCodeInterpreter
  from m2cgen.interpreters.mixins import LinearAlgebraMixin, PowExprFunctionMixin
  from m2cgen.interpreters.utils import get_file_content
label_desc: Use image node_id 2 for calling the CInterpreter obj's underlying member method code with example usage: obj.interpret(expr) and returns: self