diff --git a/reactos/ntoskrnl/ntoskrnl.def b/reactos/ntoskrnl/ntoskrnl.def
index dd462e9126a..7727ceae018 100644
--- a/reactos/ntoskrnl/ntoskrnl.def
+++ b/reactos/ntoskrnl/ntoskrnl.def
@@ -1,4 +1,4 @@
-; $Id: ntoskrnl.def,v 1.27 1999/11/24 11:51:46 dwelch Exp $
+; $Id: ntoskrnl.def,v 1.28 1999/11/25 23:35:24 ekohl Exp $
 ;
 ; reactos/ntoskrnl/ntoskrnl.def
 ;
@@ -247,6 +247,10 @@ RtlUpcaseUnicodeToOemN@20
 RtlUpperChar@4
 RtlUpperString@8
 RtlZeroMemory@8
+RtlxAnsiStringToUnicodeSize@4
+RtlxOemStringToUnicodeSize@4
+RtlxUnicodeStringToAnsiSize@4
+RtlxUnicodeStringToOemSize@4
 ZwAccessCheckAndAuditAlarm@44
 ZwAlertThread@4
 ZwAllocateVirtualMemory@24
@@ -336,7 +340,7 @@ ZwYieldExecution@0
 ;_aullshr
 ;_except_handler2
 ;_global_unwind2
-;_itoa
+_itoa
 ;_local_unwind2
 ;_purecall
 ;_snprintf
diff --git a/reactos/ntoskrnl/ntoskrnl.edf b/reactos/ntoskrnl/ntoskrnl.edf
index 14b461f9d46..32c43710807 100644
--- a/reactos/ntoskrnl/ntoskrnl.edf
+++ b/reactos/ntoskrnl/ntoskrnl.edf
@@ -1,4 +1,4 @@
-; $Id: ntoskrnl.edf,v 1.14 1999/11/24 11:51:46 dwelch Exp $
+; $Id: ntoskrnl.edf,v 1.15 1999/11/25 23:35:24 ekohl Exp $
 ;
 ; reactos/ntoskrnl/ntoskrnl.def
 ;
@@ -245,6 +245,10 @@ RtlUpcaseUnicodeToOemN=RtlUpcaseUnicodeToOemN@20
 RtlUpperChar=RtlUpperChar@4
 RtlUpperString=RtlUpperString@8
 RtlZeroMemory=RtlZeroMemory@8
+RtlxAnsiStringToUnicodeSize=RtlxAnsiStringToUnicodeSize@4
+RtlxOemStringToUnicodeSize=RtlxOemStringToUnicodeSize@4
+RtlxUnicodeStringToAnsiSize=RtlxUnicodeStringToAnsiSize@4
+RtlxUnicodeStringToOemSize=RtlxUnicodeStringToOemSize@4
 ZwAccessCheckAndAuditAlarm=ZwAccessCheckAndAuditAlarm@44
 ZwAlertThread=ZwAlertThread@4
 ZwAllocateVirtualMemory=ZwAllocateVirtualMemory@24
@@ -334,7 +338,7 @@ ZwYieldExecution=ZwYieldExecution@0
 ;_aullshr
 ;_except_handler2
 ;_global_unwind2
-;_itoa
+_itoa
 ;_local_unwind2
 ;_purecall
 ;_snprintf
diff --git a/reactos/ntoskrnl/rtl/stdlib.c b/reactos/ntoskrnl/rtl/stdlib.c
index 177222cc4af..699045f92b9 100644
--- a/reactos/ntoskrnl/rtl/stdlib.c
+++ b/reactos/ntoskrnl/rtl/stdlib.c
@@ -22,37 +22,38 @@ static unsigned long long next = 0;
 #if 0
 int atoi(const char *str)
 {
-	return (int)strtol(str, 0, 10);
+	return (int)atol (str);
 }
 
 long atol(const char *str)
 {
 	return strtol(str, 0, 10);
 }
+#endif
 
-char *_itoa(int value, char *string, int radix)
+
+/*
+ * NOTE: no radix range check (valid range: 2 - 36)
+ */
+
+char *_itoa (int value, char *string, int radix)
 {
   char tmp[33];
   char *tp = tmp;
   int i;
   unsigned v;
   int sign;
-  char *sp;
+  char *sp = NULL;
 
-  if (string == 0)
+  if (string == NULL)
     return NULL;
 
-  if (radix > 36 || radix <= 1)
-  {
-    __set_errno(EDOM);
-    return 0;
-  }
-
   sign = (radix == 10 && value < 0);
   if (sign)
     v = -value;
   else
     v = (unsigned)value;
+
   while (v || tp == tmp)
   {
     i = v % radix;
@@ -65,12 +66,13 @@ char *_itoa(int value, char *string, int radix)
 
   if (sign)
     *sp++ = '-';
+
   while (tp > tmp)
     *sp++ = *--tp;
   *sp = 0;
+
   return string;
 }
-#endif
 
 
 int rand(void)
diff --git a/reactos/ntoskrnl/rtl/unicode.c b/reactos/ntoskrnl/rtl/unicode.c
index 24f073e9730..6e7a3e33324 100644
--- a/reactos/ntoskrnl/rtl/unicode.c
+++ b/reactos/ntoskrnl/rtl/unicode.c
@@ -1,4 +1,4 @@
-/* $Id: unicode.c,v 1.9 1999/11/20 21:45:20 ekohl Exp $
+/* $Id: unicode.c,v 1.10 1999/11/25 23:34:43 ekohl Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -1341,4 +1341,44 @@ RtlUpperString(PSTRING DestinationString, PSTRING SourceString)
 	DestinationString->Length = SourceString->Length;
 }
 
+
+ULONG
+STDCALL
+RtlxAnsiStringToUnicodeSize (
+	IN	PANSI_STRING	AnsiString
+	)
+{
+	return RtlAnsiStringToUnicodeSize (AnsiString);
+}
+
+
+ULONG
+STDCALL
+RtlxOemStringToUnicodeSize (
+	IN	POEM_STRING	OemString
+	)
+{
+	return RtlAnsiStringToUnicodeSize ((PANSI_STRING)OemString);
+}
+
+
+ULONG
+STDCALL
+RtlxUnicodeStringToAnsiSize (
+	IN	PUNICODE_STRING	UnicodeString
+	)
+{
+	return RtlUnicodeStringToAnsiSize (UnicodeString);
+}
+
+
+ULONG
+STDCALL
+RtlxUnicodeStringToOemSize (
+	IN	PUNICODE_STRING	UnicodeString
+	)
+{
+	return RtlUnicodeStringToAnsiSize (UnicodeString);
+}
+
 /* EOF */