Avoid __popcnt64 on MSVC Windows 32-bit platform

The `__popcnt64` intrinsic isn't supported on 32-bit Windows, so `__popcnt` should be used instead.
asg017 · Oct 15, 2024 · ebb6e97 · ebb6e97
1 parent 9cc0dea
commit ebb6e97
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/sqlite-vec.c b/sqlite-vec.c
@@ -529,7 +529,11 @@ static unsigned int __builtin_popcountl(unsigned int x) {
 }
 #else
 #include <intrin.h>
+#ifdef _WIN64
 #define __builtin_popcountl __popcnt64
+#else
+static unsigned int __builtin_popcountl(u64 n) { return __popcnt((u32)n) + __popcnt((u32)(n >> 32)); }
+#endif
 #endif
 #endif