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util: log2_ceil

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Matheus
2026-05-11 01:24:24 -03:00
parent 9d1dd61972
commit 7a23528650
1 changed files with 7 additions and 0 deletions
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kernel-src/include/util.h
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@@ -23,6 +23,13 @@ static inline unsigned long log2(unsigned long x) {
return sizeof(unsigned long) * 8 - __builtin_clzll(x) - 1;
}
static inline unsigned long ceil_log2(unsigned long x) {
if (x <= 1)
return 0;
return log2(x - 1) + 1;
}
#define min(x, y) (x > y ? y : x)
#define max(x, y) (x < y ? y : x)