| x04nac | nag_enum_name_to_value Converts NAG enum member name to a value |
| x04nbc | nag_enum_value_to_name Converts NAG enum member value to its name |
| x04ncc | nag_error_name_to_code Converts NAG error name to its code value |
| x04ndc | nag_code_to_error_name Returns the string error name corresponding to a C Libary exit error code |