The functions in this chapter provide information about the NAG C Library.
Information about the precise implementation of the NAG C Library in use will be needed when communicating with the NAG Technical Support Service (see Support from NAG
enables you to determine the precise Mark and maintenance level of the NAG C Library which is being used, and also details of the implementation.
enables you to check if a valid key is available for the library licence management system.
is similar to nag_implementation_details (a00aac)
but returns different aspects of an implementation, such as the product code and Mark in separate strings and integers.