diff --git a/reactos/lib/ntdll/dbg/brkpoint.c b/reactos/lib/ntdll/dbg/brkpoint.c
new file mode 100644
index 00000000000..eb3507ae672
--- /dev/null
+++ b/reactos/lib/ntdll/dbg/brkpoint.c
@@ -0,0 +1,29 @@
+/* $Id: brkpoint.c,v 1.1 1999/12/29 17:12:28 ekohl Exp $
+ *
+ * COPYRIGHT:       See COPYING in the top level directory
+ * PROJECT:         ReactOS kernel
+ * FILE:            lib/ntdll/dbg/brkpoint.c
+ * PURPOSE:         Handles breakpoints
+ * PROGRAMMER:      Eric Kohl
+ * UPDATE HISTORY:
+ *                  Created 28/12/1999
+ */
+
+/* INCLUDES *****************************************************************/
+
+#include <ddk/ntddk.h>
+
+
+/* FUNCTIONS *****************************************************************/
+
+VOID DbgBreakPoint(VOID)
+{
+   __asm__("int $3\n\t");
+}
+
+VOID DbgUserBreakPoint(VOID)
+{
+   __asm__("int $3\n\t");
+}
+
+/* EOF */
diff --git a/reactos/lib/ntdll/def/ntdll.def b/reactos/lib/ntdll/def/ntdll.def
index b76c405b3ca..cf90d4d55e7 100644
--- a/reactos/lib/ntdll/def/ntdll.def
+++ b/reactos/lib/ntdll/def/ntdll.def
@@ -1,4 +1,4 @@
-; $Id: ntdll.def,v 1.32 1999/12/27 15:06:13 ekohl Exp $
+; $Id: ntdll.def,v 1.33 1999/12/29 17:10:41 ekohl Exp $
 ;
 ; ReactOS Operating System
 ;
@@ -527,10 +527,10 @@ RtlxAnsiStringToUnicodeSize@4
 RtlxOemStringToUnicodeSize@4
 RtlxUnicodeStringToAnsiSize@4
 RtlxUnicodeStringToOemSize@4
-;__isascii
-;__iscsym
-;__iscsymf
-;__toascii
+__isascii
+__iscsym
+__iscsymf
+__toascii
 ;_alldiv
 ;_allmul
 ;_alloca_probe
@@ -573,13 +573,13 @@ _wcsupr
 ;_wtoi64
 ;_wtol
 abs
-;atan
+atan
 atoi
 atol
-;ceil
-;cos
-;fabs
-;floor
+ceil
+cos
+fabs
+floor
 isalnum
 isalpha
 iscntrl
@@ -590,22 +590,22 @@ isprint
 ispunct
 isspace
 isupper
-;iswalpha
-;iswctype
+iswalpha
+iswctype
 isxdigit
 labs
-;log
+log
 ;mbstowcs
 memchr
 memcmp
 memcpy
 memmove
 memset
-;pow
+pow
 ;qsort
-;sin
+sin
 sprintf
-;sqrt
+sqrt
 ;sscanf
 strcat
 strchr
@@ -623,7 +623,7 @@ strstr
 strtol
 strtoul
 ;swprintf
-;tan
+tan
 tolower
 toupper
 towlower
diff --git a/reactos/lib/ntdll/def/ntdll.edf b/reactos/lib/ntdll/def/ntdll.edf
index 7046965f3b6..17390551f60 100644
--- a/reactos/lib/ntdll/def/ntdll.edf
+++ b/reactos/lib/ntdll/def/ntdll.edf
@@ -1,4 +1,4 @@
-; $Id: ntdll.edf,v 1.22 1999/12/27 15:06:13 ekohl Exp $
+; $Id: ntdll.edf,v 1.23 1999/12/29 17:10:41 ekohl Exp $
 ;
 ; ReactOS Operating System
 ;
@@ -519,6 +519,10 @@ RtlxAnsiStringToUnicodeSize=RtlxAnsiStringToUnicodeSize@4
 RtlxOemStringToUnicodeSize=RtlxOemStringToUnicodeSize@4
 RtlxUnicodeStringToAnsiSize=RtlxUnicodeStringToAnsiSize@4
 RtlxUnicodeStringToOemSize=RtlxUnicodeStringToOemSize@4
+__isascii
+__iscsym
+__iscsymf
+__toascii
 _memccpy
 _memicmp
 _splitpath
@@ -534,8 +538,13 @@ _wcslwr
 _wcsnicmp
 _wcsupr
 abs
+atan
 atoi
 atol
+ceil
+cos
+fabs
+floor
 isalpha
 isalnum
 iscntrl
@@ -546,14 +555,20 @@ isprint
 ispunct
 isspace
 isupper
+iswalpha
+iswctype
 isxdigit
 labs
+log
 memchr
 memcmp
 memcpy
 memmove
 memset
+pow
+sin
 sprintf
+sqrt
 strcat
 strchr
 strcmp
@@ -569,6 +584,7 @@ strspn
 strstr
 strtol
 strtoul
+tan
 tolower
 toupper
 towlower
diff --git a/reactos/lib/ntdll/makefile b/reactos/lib/ntdll/makefile
index baec8b96a00..0079379db69 100644
--- a/reactos/lib/ntdll/makefile
+++ b/reactos/lib/ntdll/makefile
@@ -1,4 +1,4 @@
-# $Id: makefile,v 1.29 1999/12/12 00:20:29 ekohl Exp $
+# $Id: makefile,v 1.30 1999/12/29 17:10:23 ekohl Exp $
 #
 # ReactOS Operating System
 #
@@ -23,8 +23,10 @@ endif
 
 all: $(DLLTARGET)
 
+DBG_OBJECTS = dbg/brkpoint.o
+
 RTL_OBJECTS = rtl/critical.o rtl/error.o rtl/heap.o rtl/largeint.o \
-              rtl/mem.o rtl/nls.o rtl/process.o rtl/security.o \
+              rtl/math.o rtl/mem.o rtl/nls.o rtl/process.o rtl/security.o \
               rtl/thread.o rtl/unicode.o rtl/env.o
 
 STDLIB_OBJECTS = stdlib/abs.o stdlib/atoi.o stdlib/atol.o stdlib/labs.o \
@@ -40,18 +42,18 @@ STRING_OBJECTS = string/ctype.o string/memccpy.o string/memchr.o \
                  string/strpbrk.o string/strrchr.o string/strspn.o \
                  string/strstr.o string/strupr.o string/wstring.o
 
-OBJECTS = napi.o ldr/startup.o $(RTL_OBJECTS) \
+OBJECTS = napi.o ldr/startup.o $(DBG_OBJECTS) $(RTL_OBJECTS) \
           stdio/vsprintf.o $(STDLIB_OBJECTS) $(STRING_OBJECTS) \
           stubs/stubs.o ldr/utils.o $(TARGET).coff
 
 ifeq ($(DOSCLI),yes)
 CLEAN_FILES = napi.o ldr\*.o rtl\*.o stdio\*.o stdlib\*.o string\*.o stubs\*.o \
               $(TARGET).a main\dllmain.o $(TARGET).o $(TARGET).dll junk.tmp \
-	      base.tmp temp.exp $(TARGET).sym $(TARGET).coff
+              base.tmp temp.exp $(TARGET).sym $(TARGET).coff
 else
 CLEAN_FILES = napi.o ldr/*.o rtl/*.o stdio/*.o stdlib/*.o string/*.o stubs/*.o \
               $(TARGET).a main/dllmain.o $(TARGET).o $(TARGET).dll junk.tmp \
-	      base.tmp temp.exp $(TARGET).sym $(TARGET).coff
+              base.tmp temp.exp $(TARGET).sym $(TARGET).coff
 endif
 
 $(TARGET).coff: $(TARGET).rc ../../include/reactos/resource.h
diff --git a/reactos/lib/ntdll/rtl/math.c b/reactos/lib/ntdll/rtl/math.c
new file mode 100644
index 00000000000..bb098e61c6a
--- /dev/null
+++ b/reactos/lib/ntdll/rtl/math.c
@@ -0,0 +1,191 @@
+/* Math functions for i387.
+   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by John C. Bowman <bowman@ipp-garching.mpg.de>, 1995.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+
+double atan (double __x);
+double ceil (double __x);
+double cos (double __x);
+double fabs (double __x);
+double floor (double __x);
+double log (double __x);
+double __log2 (double __x);
+double pow (double __x, double __y);
+double sin (double __x);
+double sqrt (double __x);
+double tan (double __x);
+
+
+double atan (double __x)
+{
+  register double __value;
+  __asm __volatile__
+    ("fld1\n\t"
+     "fpatan"
+     : "=t" (__value) : "0" (__x));
+
+  return __value;
+}
+
+double ceil (double __x)
+{
+  register double __value;
+  __volatile unsigned short int __cw, __cwtmp;
+
+  __asm __volatile ("fnstcw %0" : "=m" (__cw));
+  __cwtmp = (__cw & 0xf3ff) | 0x0800; /* rounding up */
+  __asm __volatile ("fldcw %0" : : "m" (__cwtmp));
+  __asm __volatile ("frndint" : "=t" (__value) : "0" (__x));
+  __asm __volatile ("fldcw %0" : : "m" (__cw));
+
+  return __value;
+}
+
+double cos (double __x)
+{
+  register double __value;
+  __asm __volatile__
+    ("fcos"
+     : "=t" (__value): "0" (__x));
+
+  return __value;
+}
+
+double fabs (double __x)
+{
+  register double __value;
+  __asm __volatile__
+    ("fabs"
+     : "=t" (__value) : "0" (__x));
+
+  return __value;
+}
+
+double floor (double __x)
+{
+  register double __value;
+  __volatile unsigned short int __cw, __cwtmp;
+
+  __asm __volatile ("fnstcw %0" : "=m" (__cw));
+  __cwtmp = (__cw & 0xf3ff) | 0x0400; /* rounding down */
+  __asm __volatile ("fldcw %0" : : "m" (__cwtmp));
+  __asm __volatile ("frndint" : "=t" (__value) : "0" (__x));
+  __asm __volatile ("fldcw %0" : : "m" (__cw));
+
+  return __value;
+}
+
+double log (double __x)
+{
+  register double __value;
+  __asm __volatile__
+    ("fldln2\n\t"
+     "fxch\n\t"
+     "fyl2x"
+     : "=t" (__value) : "0" (__x));
+
+  return __value;
+}
+
+double __log2 (double __x)
+{
+  register double __value;
+  __asm __volatile__
+    ("fld1\n\t"
+     "fxch\n\t"
+     "fyl2x"
+     : "=t" (__value) : "0" (__x));
+
+  return __value;
+}
+
+double pow (double __x, double __y)
+{
+  register double __value, __exponent;
+  long __p = (long) __y;
+
+  if (__x == 0.0 && __y > 0.0)
+    return 0.0;
+  if (__y == (double) __p)
+    {
+      double __r = 1.0;
+      if (__p == 0)
+        return 1.0;
+      if (__p < 0)
+        {
+          __p = -__p;
+          __x = 1.0 / __x;
+        }
+      while (1)
+        {
+          if (__p & 1)
+            __r *= __x;
+          __p >>= 1;
+          if (__p == 0)
+            return __r;
+          __x *= __x;
+        }
+      /* NOTREACHED */
+    }
+  __asm __volatile__
+    ("fmul      %%st(1)         # y * log2(x)\n\t"
+     "fst       %%st(1)\n\t"
+     "frndint                   # int(y * log2(x))\n\t"
+     "fxch\n\t"
+     "fsub      %%st(1)         # fract(y * log2(x))\n\t"
+     "f2xm1                     # 2^(fract(y * log2(x))) - 1\n\t"
+     : "=t" (__value), "=u" (__exponent) :  "0" (__log2 (__x)), "1" (__y));
+  __value += 1.0;
+  __asm __volatile__
+    ("fscale"
+     : "=t" (__value) : "0" (__value), "u" (__exponent));
+
+  return __value;
+}
+
+double sin (double __x)
+{
+  register double __value;
+  __asm __volatile__
+    ("fsin"
+     : "=t" (__value) : "0" (__x));
+
+  return __value;
+}
+
+double sqrt (double __x)
+{
+  register double __value;
+  __asm __volatile__
+    ("fsqrt"
+     : "=t" (__value) : "0" (__x));
+
+  return __value;
+}
+
+double tan (double __x)
+{
+  register double __value;
+  register double __value2 __attribute__ ((unused));
+  __asm __volatile__
+    ("fptan"
+     : "=t" (__value2), "=u" (__value) : "0" (__x));
+
+  return __value;
+}
diff --git a/reactos/lib/ntdll/string/ctype.c b/reactos/lib/ntdll/string/ctype.c
index d6eeacd2e9e..dd7a4727a55 100644
--- a/reactos/lib/ntdll/string/ctype.c
+++ b/reactos/lib/ntdll/string/ctype.c
@@ -1,11 +1,299 @@
+/* $Id: ctype.c,v 1.5 1999/12/29 17:13:14 ekohl Exp $
+ *
+ * COPYRIGHT:       See COPYING in the top level directory
+ * PROJECT:         ReactOS kernel
+ * FILE:            lib/ntdll/rtl/ctype.c
+ * PURPOSE:         Character type and conversion functions
+ * PROGRAMMERS:     ???
+ *                  Eric Kohl
+ * HISTORY:         ???: Created
+ *                  29/12/1999: Added missing functions and changed
+ *                              all functions to use ctype table
+ */
 
 #include <ctype.h>
 
 #define upalpha ('A' - 'a')
 
+#define _GRAPH 0x0200
+#define _PRINT 0x0400
+
+
+unsigned short _pctype_dll[] = {
+   _CONTROL,					/* CTRL+@, 0x00 */
+   _CONTROL,					/* CTRL+A, 0x01 */
+   _CONTROL,					/* CTRL+B, 0x02 */
+   _CONTROL,					/* CTRL+C, 0x03 */
+   _CONTROL,					/* CTRL+D, 0x04 */
+   _CONTROL,					/* CTRL+E, 0x05 */
+   _CONTROL,					/* CTRL+F, 0x06 */
+   _CONTROL,					/* CTRL+G, 0x07 */
+   _CONTROL,					/* CTRL+H, 0x08 */
+   _CONTROL | _SPACE,				/* CTRL+I, 0x09 */
+   _CONTROL | _SPACE,				/* CTRL+J, 0x0a */
+   _CONTROL | _SPACE,				/* CTRL+K, 0x0b */
+   _CONTROL | _SPACE,				/* CTRL+L, 0x0c */
+   _CONTROL | _SPACE,				/* CTRL+M, 0x0d */
+   _CONTROL,					/* CTRL+N, 0x0e */
+   _CONTROL,					/* CTRL+O, 0x0f */
+   _CONTROL,					/* CTRL+P, 0x10 */
+   _CONTROL,					/* CTRL+Q, 0x11 */
+   _CONTROL,					/* CTRL+R, 0x12 */
+   _CONTROL,					/* CTRL+S, 0x13 */
+   _CONTROL,					/* CTRL+T, 0x14 */
+   _CONTROL,					/* CTRL+U, 0x15 */
+   _CONTROL,					/* CTRL+V, 0x16 */
+   _CONTROL,					/* CTRL+W, 0x17 */
+   _CONTROL,					/* CTRL+X, 0x18 */
+   _CONTROL,					/* CTRL+Y, 0x19 */
+   _CONTROL,					/* CTRL+Z, 0x1a */
+   _CONTROL,					/* CTRL+[, 0x1b */
+   _CONTROL,					/* CTRL+\, 0x1c */
+   _CONTROL,					/* CTRL+], 0x1d */
+   _CONTROL,					/* CTRL+^, 0x1e */
+   _CONTROL,					/* CTRL+_, 0x1f */
+   _PRINT | _SPACE,				/* ` ', 0x20 */
+   _GRAPH | _PRINT | _PUNCT,			/* `!', 0x21 */
+   _GRAPH | _PRINT | _PUNCT,			/* 0x22 */
+   _GRAPH | _PRINT | _PUNCT,			/* `#', 0x23 */
+   _GRAPH | _PRINT | _PUNCT,			/* `$', 0x24 */
+   _GRAPH | _PRINT | _PUNCT,			/* `%', 0x25 */
+   _GRAPH | _PRINT | _PUNCT,			/* `&', 0x26 */
+   _GRAPH | _PRINT | _PUNCT,			/* 0x27 */
+   _GRAPH | _PRINT | _PUNCT,			/* `(', 0x28 */
+   _GRAPH | _PRINT | _PUNCT,			/* `)', 0x29 */
+   _GRAPH | _PRINT | _PUNCT,			/* `*', 0x2a */
+   _GRAPH | _PRINT | _PUNCT,			/* `+', 0x2b */
+   _GRAPH | _PRINT | _PUNCT,			/* `,', 0x2c */
+   _GRAPH | _PRINT | _PUNCT,			/* `-', 0x2d */
+   _GRAPH | _PRINT | _PUNCT,			/* `.', 0x2e */
+   _GRAPH | _PRINT | _PUNCT,			/* `/', 0x2f */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `0', 0x30 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `1', 0x31 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `2', 0x32 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `3', 0x33 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `4', 0x34 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `5', 0x35 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `6', 0x36 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `7', 0x37 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `8', 0x38 */
+   _DIGIT | _GRAPH | _PRINT | _HEX,		/* `9', 0x39 */
+   _GRAPH | _PRINT | _PUNCT,			/* `:', 0x3a */
+   _GRAPH | _PRINT | _PUNCT,			/* `;', 0x3b */
+   _GRAPH | _PRINT | _PUNCT,			/* `<', 0x3c */
+   _GRAPH | _PRINT | _PUNCT,			/* `=', 0x3d */
+   _GRAPH | _PRINT | _PUNCT,			/* `>', 0x3e */
+   _GRAPH | _PRINT | _PUNCT,			/* `?', 0x3f */
+   _GRAPH | _PRINT | _PUNCT,			/* `@', 0x40 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER | _HEX,	/* `A', 0x41 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER | _HEX,	/* `B', 0x42 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER | _HEX,	/* `C', 0x43 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER | _HEX,	/* `D', 0x44 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER | _HEX,	/* `E', 0x45 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER | _HEX,	/* `F', 0x46 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `G', 0x47 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `H', 0x48 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `I', 0x49 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `J', 0x4a */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `K', 0x4b */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `L', 0x4c */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `M', 0x4d */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `N', 0x4e */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `O', 0x4f */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `P', 0x50 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `Q', 0x51 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `R', 0x52 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `S', 0x53 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `T', 0x54 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `U', 0x55 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `V', 0x56 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `W', 0x57 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `X', 0x58 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `Y', 0x59 */
+   _ALPHA | _GRAPH | _PRINT | _UPPER,		/* `Z', 0x5a */
+   _GRAPH | _PRINT | _PUNCT,			/* `[', 0x5b */
+   _GRAPH | _PRINT | _PUNCT,			/* 0x5c */
+   _GRAPH | _PRINT | _PUNCT,			/* `]', 0x5d */
+   _GRAPH | _PRINT | _PUNCT,			/* `^', 0x5e */
+   _GRAPH | _PRINT | _PUNCT,			/* `_', 0x5f */
+   _GRAPH | _PRINT | _PUNCT,			/* 0x60 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT | _HEX,	/* `a', 0x61 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT | _HEX,	/* `b', 0x62 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT | _HEX,	/* `c', 0x63 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT | _HEX,	/* `d', 0x64 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT | _HEX,	/* `e', 0x65 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT | _HEX,	/* `f', 0x66 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `g', 0x67 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `h', 0x68 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `i', 0x69 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `j', 0x6a */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `k', 0x6b */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `l', 0x6c */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `m', 0x6d */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `n', 0x6e */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `o', 0x6f */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `p', 0x70 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `q', 0x71 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `r', 0x72 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `s', 0x73 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `t', 0x74 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `u', 0x75 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `v', 0x76 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `w', 0x77 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `x', 0x78 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `y', 0x79 */
+   _ALPHA | _GRAPH | _LOWER | _PRINT,		/* `z', 0x7a */
+   _GRAPH | _PRINT | _PUNCT,			/* `{', 0x7b */
+   _GRAPH | _PRINT | _PUNCT,			/* `|', 0x7c */
+   _GRAPH | _PRINT | _PUNCT,			/* `}', 0x7d */
+   _GRAPH | _PRINT | _PUNCT,			/* `~', 0x7e */
+   _CONTROL,					/* 0x7f */
+   0,						/* 0x80 */
+   0,						/* 0x81 */
+   0,						/* 0x82 */
+   0,						/* 0x83 */
+   0,						/* 0x84 */
+   0,						/* 0x85 */
+   0,						/* 0x86 */
+   0,						/* 0x87 */
+   0,						/* 0x88 */
+   0,						/* 0x89 */
+   0,						/* 0x8a */
+   0,						/* 0x8b */
+   0,						/* 0x8c */
+   0,						/* 0x8d */
+   0,						/* 0x8e */
+   0,						/* 0x8f */
+   0,						/* 0x90 */
+   0,						/* 0x91 */
+   0,						/* 0x92 */
+   0,						/* 0x93 */
+   0,						/* 0x94 */
+   0,						/* 0x95 */
+   0,						/* 0x96 */
+   0,						/* 0x97 */
+   0,						/* 0x98 */
+   0,						/* 0x99 */
+   0,						/* 0x9a */
+   0,						/* 0x9b */
+   0,						/* 0x9c */
+   0,						/* 0x9d */
+   0,						/* 0x9e */
+   0,						/* 0x9f */
+   0,						/* 0xa0 */
+   0,						/* 0xa1 */
+   0,						/* 0xa2 */
+   0,						/* 0xa3 */
+   0,						/* 0xa4 */
+   0,						/* 0xa5 */
+   0,						/* 0xa6 */
+   0,						/* 0xa7 */
+   0,						/* 0xa8 */
+   0,						/* 0xa9 */
+   0,						/* 0xaa */
+   0,						/* 0xab */
+   0,						/* 0xac */
+   0,						/* 0xad */
+   0,						/* 0xae */
+   0,						/* 0xaf */
+   0,						/* 0xb0 */
+   0,						/* 0xb1 */
+   0,						/* 0xb2 */
+   0,						/* 0xb3 */
+   0,						/* 0xb4 */
+   0,						/* 0xb5 */
+   0,						/* 0xb6 */
+   0,						/* 0xb7 */
+   0,						/* 0xb8 */
+   0,						/* 0xb9 */
+   0,						/* 0xba */
+   0,						/* 0xbb */
+   0,						/* 0xbc */
+   0,						/* 0xbd */
+   0,						/* 0xbe */
+   0,						/* 0xbf */
+   0,						/* 0xc0 */
+   0,						/* 0xc1 */
+   0,						/* 0xc2 */
+   0,						/* 0xc3 */
+   0,						/* 0xc4 */
+   0,						/* 0xc5 */
+   0,						/* 0xc6 */
+   0,						/* 0xc7 */
+   0,						/* 0xc8 */
+   0,						/* 0xc9 */
+   0,						/* 0xca */
+   0,						/* 0xcb */
+   0,						/* 0xcc */
+   0,						/* 0xcd */
+   0,						/* 0xce */
+   0,						/* 0xcf */
+   0,						/* 0xd0 */
+   0,						/* 0xd1 */
+   0,						/* 0xd2 */
+   0,						/* 0xd3 */
+   0,						/* 0xd4 */
+   0,						/* 0xd5 */
+   0,						/* 0xd6 */
+   0,						/* 0xd7 */
+   0,						/* 0xd8 */
+   0,						/* 0xd9 */
+   0,						/* 0xda */
+   0,						/* 0xdb */
+   0,						/* 0xdc */
+   0,						/* 0xdd */
+   0,						/* 0xde */
+   0,						/* 0xdf */
+   0,						/* 0xe0 */
+   0,						/* 0xe1 */
+   0,						/* 0xe2 */
+   0,						/* 0xe3 */
+   0,						/* 0xe4 */
+   0,						/* 0xe5 */
+   0,						/* 0xe6 */
+   0,						/* 0xe7 */
+   0,						/* 0xe8 */
+   0,						/* 0xe9 */
+   0,						/* 0xea */
+   0,						/* 0xeb */
+   0,						/* 0xec */
+   0,						/* 0xed */
+   0,						/* 0xee */
+   0,						/* 0xef */
+   0,						/* 0xf0 */
+   0,						/* 0xf1 */
+   0,						/* 0xf2 */
+   0,						/* 0xf3 */
+   0,						/* 0xf4 */
+   0,						/* 0xf5 */
+   0,						/* 0xf6 */
+   0,						/* 0xf7 */
+   0,						/* 0xf8 */
+   0,						/* 0xf9 */
+   0,						/* 0xfa */
+   0,						/* 0xfb */
+   0,						/* 0xfc */
+   0,						/* 0xfd */
+   0,						/* 0xfe */
+   0,						/* 0xff */
+};
+
+unsigned short *_pwctype_dll = _pctype_dll;
+
+
+int _isctype (int c, int ctypeFlags)
+{
+   return((_pctype_dll[(unsigned char)(c & 0xFF)]&ctypeFlags) == ctypeFlags);
+}
+
+int iswctype(wint_t wc, wctype_t wctypeFlags)
+{
+   return((_pwctype_dll[(unsigned char)(wc & 0xFF)]&wctypeFlags) == wctypeFlags);
+}
+
 int isalpha(int c)
 {
-   return(((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')));
+   return(_isctype(c, _ALPHA));
 }
 
 int isalnum(int c)
@@ -13,89 +301,116 @@ int isalnum(int c)
    return(isalpha(c)||isdigit(c));
 }
 
+int __isascii(int c)
+{
+   return(!((c)&(~0x7f)));
+}
+
 int iscntrl(int c)
 {
-   return((c >=0x00 && c <= 0x1f) || c == 0x7f);
+   return(_isctype(c, _CONTROL));
+}
+
+int __iscsym(int c)
+{
+   return(isalnum(c)||(c == '_'));
+}
+
+int __iscsymf(int c)
+{
+   return(isalpha(c)||(c == '_'));
 }
 
 int isdigit(int c)
 {
-   return((c>='0') && (c<='9'));
+   return(_isctype(c, _DIGIT));
 }
 
 int isgraph(int c)
 {
-   return(c>=0x21 && c<=0x7e);
+   return(_isctype(c, _GRAPH));
 }
 
 int islower(int c)
 {
-   return((c>='a') && (c<='z'));
+   return(_isctype(c, _LOWER));
 }
 
 int isprint(int c)
 {
-   return(c>=0x20 && c<=0x7e);
+   return(_isctype(c, _PRINT));
 }
 
 int ispunct(int c)
 {
-   return((c>=0x21 && c<=0x2f)||(c>=0x3a && c<=0x40)||(c>=0x5b && c<=0x60));
+   return(_isctype(c, _PUNCT));
 }
 
 int isspace(int c)
 {
-   return(c==' '||c=='\t');
+   return(_isctype(c, _SPACE));
 }
 
 int isupper(int c)
 {
-   return((c>='A') && (c<='Z'));
+   return(_isctype(c, _UPPER));
+}
+
+int iswalpha(wint_t c)
+{
+   return(iswctype(c, _ALPHA));
 }
 
 int isxdigit(int c)
 {
-   return(((c>='0') && (c<='9')) || ((toupper(c)>='A') && (toupper(c)<='Z')));
+   return(_isctype(c, _HEX));
+}
+
+int __toascii(int c)
+{
+   return((unsigned)(c) & 0x7f);
 }
 
 int _tolower(int c)
 {
-   if (c>='A' && c <= 'Z')
+   if (_isctype (c, _UPPER))
        return (c - upalpha);
    return(c);
 }
 
 int _toupper(int c)
 {
-   if ((c>='a') && (c<='z'))
-      return (c+upalpha);
+   if (_isctype (c, _LOWER))
+      return (c + upalpha);
    return(c);
 }
 
 int tolower(int c)
 {
-   if (c>='A' && c <= 'Z')
+   if (_isctype (c, _UPPER))
        return (c - upalpha);
    return(c);
 }
 
 int toupper(int c)
 {
-   if ((c>='a') && (c<='z'))
-      return (c+upalpha);
+   if (_isctype (c, _LOWER))
+      return (c + upalpha);
    return(c);
 }
 
 wchar_t towlower(wchar_t c)
 {
-   if (c>='A' && c <= 'Z')
+   if (iswctype (c, _UPPER))
        return (c - upalpha);
    return(c);
 }
 
 wchar_t towupper(wchar_t c)
 {
-   if ((c>='a') && (c<='z'))
-      return (c+upalpha);
+   if (iswctype (c, _LOWER))
+      return (c + upalpha);
    return(c);
 }
+
+/* EOF */
diff --git a/reactos/lib/ntdll/stubs/stubs.c b/reactos/lib/ntdll/stubs/stubs.c
index e32340d26a8..26b63b87107 100644
--- a/reactos/lib/ntdll/stubs/stubs.c
+++ b/reactos/lib/ntdll/stubs/stubs.c
@@ -26,14 +26,12 @@ STUB(CsrNewThread)
 STUB(CsrProbeForRead)
 STUB(CsrProbeForWrite)
 STUB(CsrSetPriorityClass)
-STUB(DbgBreakPoint)
 STUB(DbgPrompt)
 STUB(DbgSsHandleKmApiMsg)
 STUB(DbgSsInitialize)
 STUB(DbgUiConnectToDbg)
 STUB(DbgUiContinue)
 STUB(DbgUiWaitStateChange)
-STUB(DbgUserBreakPoint)
 STUB(KiRaiseUserExceptionDispatcher)
 STUB(KiUserApcDispatcher)
 STUB(KiUserCallbackDispatcher)
@@ -183,10 +181,6 @@ STUB(__eFXTRACT)
 STUB(__eFYL2X)
 STUB(__eFYL2XP1)
 STUB(__eGetStatusWord)
-STUB(__isascii)
-STUB(__iscsym)
-STUB(__iscsymf)
-STUB(__toascii)
 STUB(_alldiv)
 STUB(_allmul)
 STUB(_alloca_probe)
@@ -214,20 +208,8 @@ STUB(_vsnprintf)
 STUB(_wtoi)
 STUB(_wtoi64)
 STUB(_wtol)
-STUB(atan)
-STUB(ceil)
-STUB(cos)
-STUB(fabs)
-STUB(floor)
-STUB(iswalpha)
-STUB(iswctype)
-STUB(log)
 STUB(mbstowcs)
-STUB(pow)
 STUB(qsort)
-STUB(sin)
-STUB(sqrt)
 STUB(sscanf)
 STUB(swprintf)
-STUB(tan)