From aa89418e8b76026ea3f512fcf9ab692dd89a7ba0 Mon Sep 17 00:00:00 2001
From: MerryMage <MerryMage@users.noreply.github.com>
Date: Sat, 6 Feb 2021 21:23:56 +0000
Subject: [PATCH] bit_util: Add SwapHalves32

---
 src/common/bit_util.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/common/bit_util.h b/src/common/bit_util.h
index 93e6e652..81a62b44 100644
--- a/src/common/bit_util.h
+++ b/src/common/bit_util.h
@@ -218,6 +218,11 @@ constexpr T RotateRight(T value, size_t amount) {
     return static_cast<T>((x >> amount) | (x << (BitSize<T>() - amount)));
 }
 
+constexpr u32 SwapHalves32(u32 value) {
+    return ((value & 0xFFFF0000U) >> 16) |
+           ((value & 0x0000FFFFU) << 16);
+}
+
 constexpr u16 SwapBytes16(u16 value) {
     return static_cast<u16>(u32{value} >> 8 | u32{value} << 8);
 }