vfb.c (ruby)

[Christian H. <ch...@os...>]

Hi,

maybe I'm a bit confused, but I don't understand this piece of code:

-------- vfb.c --- L469 --------

static u_long get_line_length(int xres_virtual, int bpp)
{
    u_long length;

    length = (xres_virtual+bpp-1)/bpp;
    length = (length+31)&-32;
    length >>= 3;
    return(length);
}
--------------------------------

What is/should be the return value? 32 bit aligned bytes?

I thought:

    length = (xres + bpp-1) * bpp;

would be right. But, as I mentioned, I'm a bit confused ;-)

Christian.