Microsoft Windows* (XP, Vista, 7)

Unresolved externals

I'm using the 30-day trial of the Intel Visual Studio 2015 with C++ and FORTRAN compilers. I'm evaluating for purchase and need some help please.

When trying to build a simple mixed language project with a C++ main calling a FORTRAN subroutine I get LNK2019, unresolved external symbol for "_sqrtf in function _G6".  The code is as follows:

--- C++ code ---

#included <cstdlib>

extern "C" void _cdecl G6();

using namespace std;

int main( void )



    return 0;


--- FORTRAN code ---

Advanced Computer Concepts For The (Not So) Common Chef: Terminology Pt 1

Before we start, I will use the next two blogs to clear up some terminology. If you are familiar with these concepts, I give you permission to jump to the next section.  I suggest any software readers still check out the other blog about threads. There is a lot of confusion, even among us software professionals.

Intel® VTune™ Amplifier Tutorials

The following tutorials are quick paths to start using the Intel® VTune™ Amplifier. Each demonstrates an end-to-end workflow you can ultimately apply to your own applications.


  • These tutorials apply to the VTune Amplifier XE starting from version 2013 and higher and to the VTune Amplifier for Systems from version 2014 and higher.

  • Android*
  • Linux*
  • Microsoft Windows* (XP, Vista, 7)
  • Microsoft Windows* 8
  • Progetto Yocto
  • C/C++
  • Fortran
  • Intel® System Studio
  • Intel® VTune™ Amplifier
  • Intel® Cluster Studio XE
  • Intel® Parallel Studio XE
  • Intel® Parallel Studio XE Cluster Edition
  • Intel® Parallel Studio XE Professional Edition
  • Intel® VTune™ Amplifier XE
  • Iscriversi a Microsoft Windows* (XP, Vista, 7)