9  * Within a word, bits are numbered LSB first.  Lot's of places make
11  * This can cause confusion for large (> 1 word) bitmaps on a
13  * bit depends on the word size.
263  * @word - The word to search
269 static inline unsigned char __flogr(unsigned long word)  in __flogr()  argument
271 	if (__builtin_constant_p(word)) {  in __flogr()
274 		if (!word)  in __flogr()
276 		if (!(word & 0xffffffff00000000UL)) {  in __flogr()
277 			word <<= 32;  in __flogr()
280 		if (!(word & 0xffff000000000000UL)) {  in __flogr()
281 			word <<= 16;  in __flogr()
284 		if (!(word & 0xff00000000000000UL)) {  in __flogr()
285 			word <<= 8;  in __flogr()
288 		if (!(word & 0xf000000000000000UL)) {  in __flogr()
289 			word <<= 4;  in __flogr()
292 		if (!(word & 0xc000000000000000UL)) {  in __flogr()
293 			word <<= 2;  in __flogr()
296 		if (!(word & 0x8000000000000000UL)) {  in __flogr()
297 			word <<= 1;  in __flogr()
304 		rp.even = word;  in __flogr()
313  * __ffs - find first bit in word.
314  * @word: The word to search
318 static inline unsigned long __ffs(unsigned long word)  in __ffs()  argument
320 	return __flogr(-word & word) ^ (BITS_PER_LONG - 1);  in __ffs()
325  * @word: the word to search
330 static inline int ffs(int word)  in ffs()  argument
333 	unsigned int val = (unsigned int)word;  in ffs()
339  * __fls - find last (most-significant) set bit in a long word
340  * @word: the word to search
344 static inline unsigned long __fls(unsigned long word)  in __fls()  argument
346 	return __flogr(word) ^ (BITS_PER_LONG - 1);  in __fls()
350  * fls64 - find last set bit in a 64-bit word
351  * @word: the word to search
360 static inline int fls64(unsigned long word)  in fls64()  argument
364 	return (1 + (__flogr(word) ^ (BITS_PER_LONG - 1))) & mask;  in fls64()
369  * @word: the word to search
374 static inline int fls(unsigned int word)  in fls()  argument
376 	return fls64(word);  in fls()