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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-11-14 12:01:49 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-11-14 12:01:49 +0300 |
| commit | d4bfeabe9ff7967f4b8c24aabf2de1ce3a909cd9 (patch) | |
| tree | 6b419b8497c7d57ddec20a3558697ef36ea37b11 /include/asm-generic/div64.h | |
| parent | 8a7a8e1eab929eb3a5b735a788a23b9731139046 (diff) | |
| parent | b29c6ef7bb1257853c1e31616d84f55e561cf631 (diff) | |
| download | linux-d4bfeabe9ff7967f4b8c24aabf2de1ce3a909cd9.tar.xz | |
Merge branch 'linus' into timers/urgent
Get upstream changes so dependent patches can be applied.
Diffstat (limited to 'include/asm-generic/div64.h')
| -rw-r--r-- | include/asm-generic/div64.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/asm-generic/div64.h b/include/asm-generic/div64.h index d2013064dc69..dc9726fdac8f 100644 --- a/include/asm-generic/div64.h +++ b/include/asm-generic/div64.h @@ -26,6 +26,20 @@ #if BITS_PER_LONG == 64 +/** + * do_div - returns 2 values: calculate remainder and update new dividend + * @n: pointer to uint64_t dividend (will be updated) + * @base: uint32_t divisor + * + * Summary: + * ``uint32_t remainder = *n % base;`` + * ``*n = *n / base;`` + * + * Return: (uint32_t)remainder + * + * NOTE: macro parameter @n is evaluated multiple times, + * beware of side effects! + */ # define do_div(n,base) ({ \ uint32_t __base = (base); \ uint32_t __rem; \ |