include/linux/math64.h

17  * @dividend: unsigned 64bit dividend
21  * Return: sets ``*remainder``, then returns dividend / divisor
26 static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
28 	*remainder = dividend % divisor;
29 	return dividend / divisor;
34  * @dividend: signed 64bit dividend
38  * Return: sets ``*remainder``, then returns dividend / divisor
40 static inline s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder)
42 	*remainder = dividend % divisor;
43 	return dividend / divisor;
48  * @dividend: unsigned 64bit dividend
52  * Return: sets ``*remainder``, then returns dividend / divisor
54 static inline u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder)
56 	*remainder = dividend % divisor;
57 	return dividend / divisor;
62  * @dividend: unsigned 64bit dividend
65  * Return: dividend / divisor
67 static inline u64 div64_u64(u64 dividend, u64 divisor)
69 	return dividend / divisor;
74  * @dividend: signed 64bit dividend
77  * Return: dividend / divisor
79 static inline s64 div64_s64(s64 dividend, s64 divisor)
81 	return dividend / divisor;
90 static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
92 	*remainder = do_div(dividend, divisor);
93 	return dividend;
98 extern s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder);
102 extern u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder);
106 extern u64 div64_u64(u64 dividend, u64 divisor);
110 extern s64 div64_s64(s64 dividend, s64 divisor);
117  * @dividend: unsigned 64bit dividend
124  * Return: dividend / divisor
127 static inline u64 div_u64(u64 dividend, u32 divisor)
130 	return div_u64_rem(dividend, divisor, &remainder);
136  * @dividend: signed 64bit dividend
139  * Return: dividend / divisor
142 static inline s64 div_s64(s64 dividend, s32 divisor)
145 	return div_s64_rem(dividend, divisor, &remainder);
149 u32 iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder);
293  * @ll: unsigned 64bit dividend
296  * Divide unsigned 64bit dividend by unsigned 64bit divisor
299  * Return: dividend / divisor rounded up
306  * @dividend: unsigned 64bit dividend
309  * Divide unsigned 64bit dividend by unsigned 64bit divisor
312  * Return: dividend / divisor rounded to nearest integer
314 #define DIV64_U64_ROUND_CLOSEST(dividend, divisor)	\
315 	({ u64 _tmp = (divisor); div64_u64((dividend) + _tmp / 2, _tmp); })
319  * @dividend: unsigned 64bit dividend
322  * Divide unsigned 64bit dividend by unsigned 32bit divisor
325  * Return: dividend / divisor rounded to nearest integer
327 #define DIV_U64_ROUND_CLOSEST(dividend, divisor)	\
328 	({ u32 _tmp = (divisor); div_u64((u64)(dividend) + _tmp / 2, _tmp); })
332  * @dividend: signed 64bit dividend
335  * Divide signed 64bit dividend by signed 32bit divisor
338  * Return: dividend / divisor rounded to nearest integer
340 #define DIV_S64_ROUND_CLOSEST(dividend, divisor)(	\
342 	s64 __x = (dividend);				\