From 5c08c6498f9521dfbf471308f1a7ca8b98a754f8 Mon Sep 17 00:00:00 2001
From: Lava Block <the@lava-block.com>
Date: Mon, 24 Jan 2022 12:13:08 +0100
Subject: [PATCH] Fix build - 64 bit functions do not exist

---
 include/vk_mem_alloc.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index 97e321c..7544c53 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -3074,7 +3074,7 @@ static inline uint32_t VmaCountBitsSet(uint32_t v)
 
 static inline uint8_t VmaBitScanLSB(uint64_t mask)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && defined(_WIN64)
     unsigned long pos;
     if (_BitScanForward64(&pos, mask))
         return static_cast<uint8_t>(pos);
@@ -3108,7 +3108,7 @@ static inline uint8_t VmaBitScanLSB(uint32_t mask)
 
 static inline uint8_t VmaBitScanMSB(uint64_t mask)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && defined(_WIN64)
     unsigned long pos;
     if (_BitScanReverse64(&pos, mask))
         return static_cast<uint8_t>(pos);