Downloads - NAG C Library - CLW6I25DAL

Windows x64 systems and compatible

Specific download information:

  • Using Intel C++ Compiler Intel(R) 64, version 15.0 and compatible
    Or Microsoft 64-bit C/C++ compiler, version 17.00 or compatible
  • File size of C Library
    344 MB ; 361,071,288 bytes
  • File size of Documentation
    102 MB ; 107,245,400 bytes
  • NAG Product Code: CLW6I25DAL
  • Mark 25


After downloading the file please run clw6i25dal_setup.exe to install the NAG C Library.

For implementation specific information, refer to the Installer's Note, Users' Note and Supplementary Information.


You can access the documentation via our website or you can download the self-extracting executable. After downloading run setup_cl25_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. If you have not already been supplied with a licence key from our Support Desk then you will need to complete the ‘Request a Licence Key’ web form here or instructions for obtaining a licence key are included in the products Installer's Note. In the event of difficulty please contact your NAG Technical Support Service.

Trial Request

For more information on trialling NAG software click here

Product Purchasing

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