From 67a3d1fae333f5bd293fa1ab217f5434ac44fbce Mon Sep 17 00:00:00 2001
From: yixy-only <yixy@xege.org>
Date: Sat, 16 Aug 2025 16:11:31 +0800
Subject: [PATCH] [sdefl, sinfl] Solve identifier '_BitScanReverse' not found
 problems in MSVC

---
 sdefl.h | 4 ++++
 sinfl.h | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/sdefl.h b/sdefl.h
index 5d5bcd0..4216db1 100644
--- a/sdefl.h
+++ b/sdefl.h
@@ -180,6 +180,10 @@ extern int zsdeflate(struct sdefl *s, void *o, const void *i, int n, int lvl);
 #include <string.h> /* memcpy */
 #include <limits.h> /* CHAR_BIT */
 
+#ifdef _MSC_VER
+#include <intrin.h> /* _BitScanReverse */
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/sinfl.h b/sinfl.h
index 3f60e88..9be9c17 100644
--- a/sinfl.h
+++ b/sinfl.h
@@ -142,6 +142,10 @@ extern int zsinflate(void *out, int cap, const void *in, int size);
 #include <string.h> /* memcpy, memset */
 #include <assert.h> /* assert */
 
+#ifdef _MSC_VER
+#include <intrin.h> /* _BitScanReverse */
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif