Am 24.11.2010 07:25, schrieb Keith Packard: > On Wed, 24 Nov 2010 14:40:11 +1000, Peter Hutterer <[email protected]> > wrote: > >> -#define BitIsOn(ptr, bit) (((BYTE *) (ptr))[(bit)>>3] & (1 << ((bit) & 7))) >> +#define BitIsOn(ptr, bit) !!(((BYTE *) (ptr))[(bit)>>3] & (1 << ((bit) & >> 7))) >
bit is checked to be less than 8 with "(bit) & 7" but only in the second statement. the linux kernel specifies them as inline code. maybe this is the way to go here also. re, wh _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
