thepigeongenerator/coinflip
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improve memory allocation logic

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Quinn
2025-06-20 00:22:14 +02:00
parent 0acc93d137
commit 29d76880e3
1 changed files with 2 additions and 3 deletions
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src/main.c
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@@ -24,8 +24,7 @@ dynrdat* rdat = NULL;
static inline ull pow2_ceil(ull x) { static inline ull pow2_ceil(ull x) {
x -= !!x; // if x=0, remains 0; else x -= 1 x -= !!x; // if x=0, remains 0; else x -= 1
int lz = __builtin_clzll(x | 1); // get leading zeroes return 1ULL << ((sizeof(ull) * 8) - __builtin_clzll(x | 1));
return (~0ULL >> lz) + 1; // bit-shift the maximum value by this amount of leading zeroes
} }
static void quit(void) { static void quit(void) {