Missing std:: qualifier on sqrt calls in rosenbrock4_controller.hpp

[Aparna Kumta <aparna.kumta@…>]

Compiling libs/numeric/odeint/test/rosenbrock4.cpp with Oracle Solaris 12.4 on Solaris 11.2, we see

"../boost/numeric/odeint/stepper/rosenbrock4_controller.hpp", line 77: Error: The function "sqrt" must have a prototype.

sqrt needs to be qualified with std::.

Also it appears <cmath> header might be missing?

diff ./rosenbrock4_controller.hpp_new rosenbrock4_controller.hpp

23d22

< #include <cmath>

78c77

< return std::sqrt( err / value_type( n ) );

---

return sqrt( err / value_type( n ) );

[karsten]

The fix is already in develop branch.