F77/C++

I read this paper:
http://www.uop.edu.jo/download/PdfCourses/Cplus/cppf77.pdf

And it was published TIME ago, so i was wondering, is there any point in using FORTRAN for the complex math in a program? (for example in a physics engine or a graphics modeller)

Opinions please chaps, and anyone mixed anything else with C++?

>>12
So, basically it IS a good idea to use FORTRAN for the calcs, just using the C API in C++, which is totally possible.. yeah?
No, it's just a good idea to link to the existing code (which happens to be written in fortran) rather than rewriting it all. Seriously, in physics there are millions and millions of lines of this shit.