131 static inline unsigned long ffz(unsigned long word)  in ffz()  argument
135 	word = ~word;  in ffz()
137 	if (word & 0x0000ffff) {  in ffz()
138 		k -= 16; word <<= 16;  in ffz()
140 	if (word & 0x00ff0000) {  in ffz()
141 		k -= 8;  word <<= 8;  in ffz()
143 	if (word & 0x0f000000) {  in ffz()
144 		k -= 4;  word <<= 4;  in ffz()
146 	if (word & 0x30000000) {  in ffz()
147 		k -= 2;  word <<= 2;  in ffz()
149 	if (word & 0x40000000)  in ffz()