From fe534f1497da6447153064d7bba00243000f803b Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Mon, 6 Apr 2026 15:18:26 +0200
Subject: Added popcount_u64

---
 src/arch/portable.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/arch/portable.h')

diff --git a/src/arch/portable.h b/src/arch/portable.h
index 4b66fb6..162ed1a 100644
--- a/src/arch/portable.h
+++ b/src/arch/portable.h
@@ -34,6 +34,17 @@ popcount_u32(uint32_t x)
 	return (int)x;
 }
 
+STATIC_INLINE int
+popcount_u64(uint64_t x)
+{
+	int top, bottom;
+
+	bottom = popcount_u32((uint32_t)(x & UINT64_C(0xFFFFFFFF)));
+	top = popcount_u32((uint32_t)(x >> UINT64_C(32)));
+
+	return top + bottom;
+}
+
 STATIC void
 pieces(cube_t cube[static 1], uint8_t c[static 8], uint8_t e[static 12])
 {
-- 
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