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.
298  * @word - The word to search
304 static inline unsigned char __flogr(unsigned long word)  in __flogr()  argument
306 	if (__builtin_constant_p(word)) {  in __flogr()
309 		if (!word)  in __flogr()
311 		if (!(word & 0xffffffff00000000UL)) {  in __flogr()
312 			word <<= 32;  in __flogr()
315 		if (!(word & 0xffff000000000000UL)) {  in __flogr()
316 			word <<= 16;  in __flogr()
319 		if (!(word & 0xff00000000000000UL)) {  in __flogr()
320 			word <<= 8;  in __flogr()
323 		if (!(word & 0xf000000000000000UL)) {  in __flogr()
324 			word <<= 4;  in __flogr()
327 		if (!(word & 0xc000000000000000UL)) {  in __flogr()
328 			word <<= 2;  in __flogr()
331 		if (!(word & 0x8000000000000000UL)) {  in __flogr()
332 			word <<= 1;  in __flogr()
337 		register unsigned long bit asm("4") = word;  in __flogr()
348  * __ffs - find first bit in word.
349  * @word: The word to search
353 static inline unsigned long __ffs(unsigned long word)  in __ffs()  argument
355 	return __flogr(-word & word) ^ (BITS_PER_LONG - 1);  in __ffs()
360  * @word: the word to search
365 static inline int ffs(int word)  in ffs()  argument
368 	unsigned int val = (unsigned int)word;  in ffs()
374  * __fls - find last (most-significant) set bit in a long word
375  * @word: the word to search
379 static inline unsigned long __fls(unsigned long word)  in __fls()  argument
381 	return __flogr(word) ^ (BITS_PER_LONG - 1);  in __fls()
385  * fls64 - find last set bit in a 64-bit word
386  * @word: the word to search
395 static inline int fls64(unsigned long word)  in fls64()  argument
399 	return (1 + (__flogr(word) ^ (BITS_PER_LONG - 1))) & mask;  in fls64()
404  * @word: the word to search
409 static inline int fls(unsigned int word)  in fls()  argument
411 	return fls64(word);  in fls()