[GD-Windows] Debug or not debug under VC++

[Pierre T. <p.t...@wa...>]

Under VC++, I've a computational geometry algorithm that fails (finds no
solution) when I run the exe with "Ctrl-F5", but it works with "F5".

What are the exact differences between the two, as far as the machine state
is concerned ? It's probably some FPU-related issue...

Pierre