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Add implementation for __builtin_popcountl for Windows on ARM (#72)

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Window on Arm missing the __popcnt64 function.
Adding static implementation based on b64f1e77b5/lib/ngtcp2_ringbuf.c, line 34-43
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Sheldon Robinson 2024-08-09 13:07:15 -04:00 • committed by GitHub
parent 458cf0ba61
commit 6cccfae273
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1 changed files with 12 additions and 0 deletions
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sqlite-vec.c
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@ -505,9 +505,21 @@ static f32 distance_hamming_u8(u8 *a, u8 *b, size_t n) {
} }
#ifdef _MSC_VER #ifdef _MSC_VER
#if !defined(__clang__) && \
(defined(_M_ARM) || defined(_M_ARM64))
// From https://github.com/ngtcp2/ngtcp2/blob/b64f1e77b5e0d880b93d31f474147fae4a1d17cc/lib/ngtcp2_ringbuf.c, line 34-43
static unsigned int __builtin_popcountl(unsigned int x) {
unsigned int c = 0;
for (; x; ++c) {
x &= x - 1;
}
return c;
}
#else
#include <intrin.h> #include <intrin.h>
#define __builtin_popcountl __popcnt64 #define __builtin_popcountl __popcnt64
#endif #endif
#endif
static f32 distance_hamming_u64(u64 *a, u64 *b, size_t n) { static f32 distance_hamming_u64(u64 *a, u64 *b, size_t n) {
int same = 0; int same = 0;