Downloads - NAG C Library for SMP & Multicore - CSW6I26DEL

64-bit Windows

Specific download information:

  • Intel 64 systems and compatible (including AMD64)
  • Using Intel 64-bit C++ Compiler version 17.0.1 or compatible
    Or Microsoft 64-bit C/C++ Compiler Version 19.00 or compatible
  • Using 32-bit Integers
  • Visual Studio 2015 / 2017
  • File size of NAG C Library for SMP & Multicore
    481 MB ; 504,841,192 bytes
  • File size of Documentation
    103 MB ; 109,023,520 bytes
  • NAG Product Code: CSW6I26DEL
  • Mark 26


After downloading the file please run csw6i26del_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_cl26_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 Note. 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 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.