Yes, it will make better rounding when dealing with decimal precission numbers, and a little (and sometimes not so little) speed increase.
My Gess is that it is faster becouse C function is not managed code, and the internal variables of the function don't have to deal with the GC. I'm not much sure about this, but it seems logical to me.
My Gess is that it is faster becouse C function is not managed code, and the internal variables of the function don't have to deal with the GC. I'm not much sure about this, but it seems logical to me.