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format: Fix clz for 32-bit targets

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This commit is contained in:
Alexis Engelke
2023-01-14 19:41:46 +01:00
parent 2f7e8dd0de
commit d7aff5de28
1 changed files with 6 additions and 0 deletions
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6
format.c
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@@ -44,7 +44,13 @@ fd_strpcat(char* restrict dst, struct FdStr src) {
static unsigned static unsigned
fd_clz64(uint64_t v) { fd_clz64(uint64_t v) {
#if defined(__GNUC__) #if defined(__GNUC__)
#if INTPTR_MAX == INT64_MAX
return __builtin_clzl(v); return __builtin_clzl(v);
#else
if (v <= 0xffffffff)
return 32 + __builtin_clzl(v);
return __builtin_clzl(v >> 32);
#endif
#elif defined(_MSC_VER) #elif defined(_MSC_VER)
unsigned long index; unsigned long index;