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.
127  * @word - The word to search
133 static inline unsigned char __flogr(unsigned long word)  in __flogr()  argument
135 	if (__builtin_constant_p(word)) {  in __flogr()
138 		if (!word)  in __flogr()
140 		if (!(word & 0xffffffff00000000UL)) {  in __flogr()
141 			word <<= 32;  in __flogr()
144 		if (!(word & 0xffff000000000000UL)) {  in __flogr()
145 			word <<= 16;  in __flogr()
148 		if (!(word & 0xff00000000000000UL)) {  in __flogr()
149 			word <<= 8;  in __flogr()
152 		if (!(word & 0xf000000000000000UL)) {  in __flogr()
153 			word <<= 4;  in __flogr()
156 		if (!(word & 0xc000000000000000UL)) {  in __flogr()
157 			word <<= 2;  in __flogr()
160 		if (!(word & 0x8000000000000000UL)) {  in __flogr()
161 			word <<= 1;  in __flogr()
168 		rp.even = word;  in __flogr()
177  * __ffs - find first bit in word.
178  * @word: The word to search
182 static inline unsigned long __ffs(unsigned long word)  in __ffs()  argument
184 	return __flogr(-word & word) ^ (BITS_PER_LONG - 1);  in __ffs()
189  * @word: the word to search
194 static inline int ffs(int word)  in ffs()  argument
197 	unsigned int val = (unsigned int)word;  in ffs()
203  * __fls - find last (most-significant) set bit in a long word
204  * @word: the word to search
208 static inline unsigned long __fls(unsigned long word)  in __fls()  argument
210 	return __flogr(word) ^ (BITS_PER_LONG - 1);  in __fls()
214  * fls64 - find last set bit in a 64-bit word
215  * @word: the word to search
224 static inline int fls64(unsigned long word)  in fls64()  argument
228 	return (1 + (__flogr(word) ^ (BITS_PER_LONG - 1))) & mask;  in fls64()
233  * @word: the word to search
238 static inline int fls(unsigned int word)  in fls()  argument
240 	return fls64(word);  in fls()