[janderwald] 25676: - ULONG is always >= 0 - Include limits.h to use ULONG_MAX instead of doing a cast

Author: janderwald
Date: Fri Feb  2 02:05:32 2007
New Revision: 25676

URL: http://svn.reactos.org/svn/reactos?rev=25676&view=rev
Log:
- ULONG is always >= 0
- Include limits.h to use ULONG_MAX instead of doing a cast

Modified:
    trunk/reactos/drivers/base/beep/beep.c

Modified: trunk/reactos/drivers/base/beep/beep.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/base/beep/beep.c?r…
==============================================================================
--- trunk/reactos/drivers/base/beep/beep.c (original)
+++ trunk/reactos/drivers/base/beep/beep.c Fri Feb  2 02:05:32 2007
@@ -14,6 +14,7 @@
 
 #include <ntddk.h>
 #include <ntddbeep.h>
+#include <limits.h>
 
 #define NDEBUG
 #include <debug.h>
@@ -183,7 +184,7 @@
   DPRINT("Beep:\n  Freq: %lu Hz\n  Dur: %lu ms\n",
 	 BeepParam->Frequency,
 	 BeepParam->Duration);
-  if (BeepParam->Duration >= 0)
+  if (BeepParam->Duration > 0)
     {
       DueTime.QuadPart = (LONGLONG)BeepParam->Duration * -10000;
 
@@ -199,7 +200,7 @@
 			    FALSE,
 			    NULL);
     }
-  else if (BeepParam->Duration == (ULONG)-1)
+  else if (BeepParam->Duration == ULONG_MAX)
     {
       if (DeviceExtension->BeepOn == TRUE)
 	{