3 files changed, 24 insertions, 0 deletions
diff --git a/src/internal/ntapi.c b/src/internal/ntapi.c
index f053431..c71aeb5 100644
--- a/src/internal/ntapi.c
+++ b/src/internal/ntapi.c
@@ -169,6 +169,7 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
 	__ntapi->tt_string_null_offset_ptrsize			= __ntapi_tt_string_null_offset_ptrsize;
 	__ntapi->tt_strcmp_multibyte				= __ntapi_tt_strcmp_multibyte;
 	__ntapi->tt_strcmp_utf16				= __ntapi_tt_strcmp_utf16;
+	__ntapi->tt_strncmp_multibyte				= __ntapi_tt_strncmp_multibyte;
 	__ntapi->strlen						= __ntapi_tt_string_null_offset_multibyte;
 	__ntapi->wcslen						= __ntapi_wcslen;
 	__ntapi->tt_aligned_block_memset 			= __ntapi_tt_aligned_block_memset;
diff --git a/src/internal/ntapi_fnapi.h b/src/internal/ntapi_fnapi.h
index d752e70..684f12a 100644
--- a/src/internal/ntapi_fnapi.h
+++ b/src/internal/ntapi_fnapi.h
@@ -55,6 +55,7 @@ ntapi_tt_string_null_offset_qword		__ntapi_tt_string_null_offset_qword;
 ntapi_tt_string_null_offset_ptrsize		__ntapi_tt_string_null_offset_ptrsize;
 ntapi_tt_strcmp_multibyte			__ntapi_tt_strcmp_multibyte;
 ntapi_tt_strcmp_utf16				__ntapi_tt_strcmp_utf16;
+ntapi_tt_strncmp_multibyte			__ntapi_tt_strncmp_multibyte;
 ntapi_wcslen					__ntapi_wcslen;
 ntapi_tt_aligned_block_memset			__ntapi_tt_aligned_block_memset;
 ntapi_tt_aligned_block_memcpy			__ntapi_tt_aligned_block_memcpy;
diff --git a/src/string/ntapi_tt_strncmp_multibyte.c b/src/string/ntapi_tt_strncmp_multibyte.c
new file mode 100644
index 0000000..d66865d
--- /dev/null
+++ b/src/string/ntapi_tt_strncmp_multibyte.c
@@ -0,0 +1,22 @@
+/********************************************************/
+/*  ntapi: Native API core library                      */
+/*  Copyright (C) 2013--2016  Z. Gilboa                 */
+/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
+/********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/nt_string.h>
+
+int __cdecl __ntapi_tt_strncmp_multibyte(
+	__in	const char *	a,
+	__in	const char *	b,
+	__in	size_t		n)
+{
+	if (n == 0)
+		return 0;
+
+	for (--n; n && (*a == *b) && *a; a++, b++)
+		n--;
+
+	return (int)*a - (int)*b;
+}