From 4bc558a9984de8e9285e9bac83884a1b2ead800b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Wed, 8 Feb 2017 21:51:02 -0800
Subject: [PATCH] Added memCmp.

---
 include/bx/bx.h |  3 +++
 src/crt.cpp     | 17 +++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/include/bx/bx.h b/include/bx/bx.h
index ea97d0d..f623b58 100644
--- a/include/bx/bx.h
+++ b/include/bx/bx.h
@@ -62,6 +62,9 @@ namespace bx
 	///
 	void memSet(void* _dst, uint8_t _ch, size_t _numBytes);
 
+	///
+	int32_t memCmp(const char* _lhs, const char* _rhs, size_t _numBytes);
+
 } // namespace bx
 
 #include "bx.inl"
diff --git a/src/crt.cpp b/src/crt.cpp
index 66c09bb..ab6af2b 100644
--- a/src/crt.cpp
+++ b/src/crt.cpp
@@ -121,6 +121,18 @@ namespace bx
 #endif // BX_CRT_NONE
 	}
 
+	int32_t memCmp(const char* _lhs, const char* _rhs, size_t _numBytes)
+	{
+		for (
+			; 0 < _numBytes && *_lhs == *_rhs
+			; ++_lhs, ++_rhs, --_numBytes
+			)
+		{
+		}
+
+		return 0 == _numBytes ? 0 : *_lhs - *_rhs;
+	}
+
 	namespace
 	{
 		struct Param
@@ -417,4 +429,9 @@ extern "C" void* memset(void* _dst, int _ch, size_t _numBytes)
 	bx::memSet(_dst, uint8_t(_ch), _numBytes);
 	return _dst;
 }
+
+extern "C" int32_t memcmp(const char* _lhs, const char* _rhs, size_t _numBytes)
+{
+	return bx::memCmp(_lhs, _rhs, _numBytes);
+}
 #endif // BX_CRT_NONE