NAG Downloads - C Library

Windows Dynamic Link Library (DLL)

Specific download information:

  • C Library, Mark 8
  • For Windows XP/2003/Vista
  • Using Windows XP/Vista DLL, Microsoft C/C++
  • File Size: 42.0 MB; 44132224 bytes bytes; MD5sum=de14de0d1be15888cfba8a56785a7ae4
  • NAG Product Code: CLDLL084ZL


The software is provided as self-extracting executable.
Download it from here (42.0 MB),
and then run setup_cldll084zl.exe to install the C Library.

For implementation specific information, refer to the installer's notes and users' notes.


You can access the documentation on our website.
You also have the option to download the self-extracting executable from here (76.7 MB),
and then run setup_cl08_manual.exe to install the C Library Manual.

Licence key

To enable the use of your NAG software you will need a relevant licence key. Instructions for obtaining a licence key are included in the products Installer's Notes. Links to each product's Installer's Notes can be found on that product's download page. Alternatively you can complete the ‘Request a Licence Key’ web form here. If you've already been supplied with a licence key from our Support Desk then you will not need to complete this form/request a key. In the event of difficulty please contact your NAG response centre.

Trial Request

For more information on trialling NAG software click here

Product Purchasing

The product can be purchased by contacting one of our offices.