From 9064185bd8e29fef8110b89be7795ee977470ba0 Mon Sep 17 00:00:00 2001
From: Jonas 'Sortie' Termansen <sortie@maxsi.org>
Date: Sun, 8 Jan 2012 20:17:27 +0100
Subject: [PATCH] Added memcmp(3).

---
 libmaxsi/c/hsrc/string.h |  2 +-
 libmaxsi/hsrc/memory.h   | 13 +++++++------
 libmaxsi/memory.cpp      | 11 +++++++++++
 3 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/libmaxsi/c/hsrc/string.h b/libmaxsi/c/hsrc/string.h
index ca773d6f..a0b734c4 100644
--- a/libmaxsi/c/hsrc/string.h
+++ b/libmaxsi/c/hsrc/string.h
@@ -33,6 +33,7 @@ __BEGIN_DECLS
 @include(size_t.h)
 @include(locale_t.h)
 
+int memcmp(const void*, const void*, size_t);
 void* memcpy(void* restrict, const void* restrict, size_t);
 void* memset(void*, int, size_t);
 char* strcat(char* restrict, const char* restrict);
@@ -46,7 +47,6 @@ int strncmp(const char*, const char*, size_t);
 #ifndef SORTIX_UNIMPLEMENTED
 void* memccpy(void* restrict, const void* restrict, int, size_t);
 void* memchr(const void*, int, size_t);
-int memcmp(const void*, const void*, size_t);
 void* memmove(void*, const void*, size_t);
 char* stpcpy(char* restrict, const char* restrict);
 char* stpncpy(char* restrict, const char* restrict, size_t);
diff --git a/libmaxsi/hsrc/memory.h b/libmaxsi/hsrc/memory.h
index e93c4aea..1e906fb7 100644
--- a/libmaxsi/hsrc/memory.h
+++ b/libmaxsi/hsrc/memory.h
@@ -30,12 +30,13 @@ namespace Maxsi
 {
 	namespace Memory
 	{
-		void	Init();
-		void*	Allocate(size_t Size);
-		void	Free(void* Addr);
-		size_t	GetChunkOverhead();
-		void*	Copy(void* Dest, const void* Src, size_t Length);
-		void*	Set(void* Dest, int Value, size_t Length);
+		void Init();
+		void* Allocate(size_t Size);
+		void Free(void* Addr);
+		size_t GetChunkOverhead();
+		void* Copy(void* Dest, const void* Src, size_t Length);
+		void* Set(void* Dest, int Value, size_t Length);
+		int Compare(const void* a, const void* b, size_t size);
 	}
 }
 
diff --git a/libmaxsi/memory.cpp b/libmaxsi/memory.cpp
index 30288b59..99a219d8 100644
--- a/libmaxsi/memory.cpp
+++ b/libmaxsi/memory.cpp
@@ -77,5 +77,16 @@ namespace Maxsi
 
 			return Dest;
 		}
+
+		DUAL_FUNCTION(int, memcmp, Compare, (const void* a, const void* b, size_t size))
+		{
+			const byte* buf1 = (const byte*) a;
+			const byte* buf2 = (const byte*) b;
+			for ( size_t i = 0; i < size; i++ )
+			{
+				if ( buf1[i] != buf2[i] ) { return (int)(buf1[i]) - (int)(buf2[i]); }
+			}
+			return 0;
+		}
 	}
 }