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kernel: add utility math functions

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max 🍓
2023-02-08 17:12:34 +00:00
parent b8eb88627a
commit 6690572bf3
1 changed files with 9 additions and 0 deletions
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9
include/socks/util.h
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@@ -6,5 +6,14 @@
extern void data_size_to_string(size_t value, char *out, size_t outsz); extern void data_size_to_string(size_t value, char *out, size_t outsz);
static inline bool power_of_2(size_t x) { return (x > 0 && (x & (x - 1)) == 0); } static inline bool power_of_2(size_t x) { return (x > 0 && (x & (x - 1)) == 0); }
static inline unsigned long long div64_pow2(unsigned long long x, unsigned long long y)
{
return x >> (__builtin_ctz(y));
}
static inline unsigned long long absdiff64(unsigned long long x, unsigned long long y)
{
return x > y ? y - x : x - y;
}
#endif #endif