Hi, my name is henry, i write from spain.
I have applied the powell`s method to solve a non-linear system of numerical equations, but when a use the algorithm in a 32 bits (linux) machine with Absoft compiler the program works fine, but when a run in a 64 bits machine, after several resolutions (my code use the powell method several times) the program start to write -NaN in all the answers.
Even when i compile in a 32 bits machine and run in a 64 bits machine, the same happend !!

any comments ??