code: def render_cast(
      self, x: List[str], var_dtype: DType, bitcast=False
  ) -> str:
      if self.type_map[var_dtype]:
          return f"{self.type_map[var_dtype]}({x[0]})"
      raise NotImplementedError(f"no cast for {var_dtype}")
  
file_path: tinygrad/extra/backends/cstyle.py
label_desc: Use image node_id 3 for calling the GLSLLanguage obj's underlying member method code with example usage: obj.render_cast(x, var_dtype, bitcast) and returns: self, str, x, str