Implemented RtlTimeToElapsedTimeFields().

svn path=/trunk/; revision=3303

reactos/lib/ntdll/def/ntdll.def

@@ -1,4 +1,4 @@
-; $Id: ntdll.def,v 1.83 2002/06/05 16:51:20 ekohl Exp $
+; $Id: ntdll.def,v 1.84 2002/07/25 16:58:58 ekohl Exp $
 ;
 ; ReactOS Operating System
 ;
@@ -557,7 +557,7 @@ RtlSubAuthoritySid@8
 ;RtlSubtreeSuccessor
 RtlSystemTimeToLocalTime@8
 RtlTimeFieldsToTime@8
-;RtlTimeToElapsedTimeFields
+RtlTimeToElapsedTimeFields@8
 RtlTimeToSecondsSince1970@8
 RtlTimeToSecondsSince1980@8
 RtlTimeToTimeFields@8

reactos/lib/ntdll/def/ntdll.edf

@@ -1,4 +1,4 @@
-; $Id: ntdll.edf,v 1.72 2002/06/05 16:51:20 ekohl Exp $
+; $Id: ntdll.edf,v 1.73 2002/07/25 16:58:58 ekohl Exp $
 ;
 ; ReactOS Operating System
 ;
@@ -556,7 +556,7 @@ RtlSubAuthoritySid=RtlSubAuthoritySid@8
 ;RtlSubtreeSuccessor
 RtlSystemTimeToLocalTime=RtlSystemTimeToLocalTime@8
 RtlTimeFieldsToTime=RtlTimeFieldsToTime@8
-;RtlTimeToElapsedTimeFields
+RtlTimeToElapsedTimeFields=RtlTimeToElapsedTimeFields@8
 RtlTimeToSecondsSince1970=RtlTimeToSecondsSince1970@8
 RtlTimeToSecondsSince1980=RtlTimeToSecondsSince1980@8
 RtlTimeToTimeFields=RtlTimeToTimeFields@8

reactos/lib/ntdll/rtl/time.c

@@ -1,4 +1,4 @@
-/* $Id: time.c,v 1.9 2001/06/22 12:36:23 ekohl Exp $
+/* $Id: time.c,v 1.10 2002/07/25 16:58:35 ekohl Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -55,6 +55,40 @@ static __inline void NormalizeTimeFields(CSHORT *FieldToNormalize,
 
 /* FUNCTIONS *****************************************************************/
 
+VOID STDCALL
+RtlTimeToElapsedTimeFields(IN PLARGE_INTEGER Time,
+			   OUT PTIME_FIELDS TimeFields)
+{
+  ULONGLONG ElapsedSeconds;
+  ULONG SecondsInDay;
+  ULONG SecondsInMinute;
+
+  /* Extract millisecond from time */
+  TimeFields->Milliseconds = (CSHORT)((Time->QuadPart % TICKSPERSEC) / TICKSPERMSEC);
+
+  /* Compute elapsed seconds */
+  ElapsedSeconds = (ULONGLONG)Time->QuadPart / TICKSPERSEC;
+
+  /* Compute seconds within the day */
+  SecondsInDay = ElapsedSeconds % SECSPERDAY;
+
+  /* Compute elapsed minutes within the day */
+  SecondsInMinute = SecondsInDay % SECSPERHOUR;
+
+  /* Compute elapsed time of day */
+  TimeFields->Hour = (CSHORT)(SecondsInDay / SECSPERHOUR);
+  TimeFields->Minute = (CSHORT)(SecondsInMinute / SECSPERMIN);
+  TimeFields->Second = (CSHORT)(SecondsInMinute % SECSPERMIN);
+
+  /* Compute elapsed days */
+  TimeFields->Day = (CSHORT)(ElapsedSeconds / SECSPERDAY);
+
+  /* The elapsed number of months and days cannot be calculated */
+  TimeFields->Month = 0;
+  TimeFields->Year = 0;
+}
+
+
 VOID STDCALL
 RtlTimeToTimeFields(PLARGE_INTEGER liTime,
 		    PTIME_FIELDS TimeFields)
@@ -225,11 +259,11 @@ RtlTimeToSecondsSince1970(PLARGE_INTEGER Time,
   liTime.QuadPart = liTime.QuadPart / TICKSPERSEC;
 
   if (liTime.u.HighPart != 0)
-      return FALSE;
+    return(FALSE);
 
   *SecondsSince1970 = liTime.u.LowPart;
 
-   return TRUE;
+  return(TRUE);
 }
 
 
@@ -243,11 +277,11 @@ RtlTimeToSecondsSince1980(PLARGE_INTEGER Time,
   liTime.QuadPart = liTime.QuadPart / TICKSPERSEC;
 
   if (liTime.u.HighPart != 0)
-      return FALSE;
+    return(FALSE);
 
   *SecondsSince1980 = liTime.u.LowPart;
 
-   return TRUE;
+  return(TRUE);
 }
 
 
@@ -258,17 +292,17 @@ RtlLocalTimeToSystemTime(PLARGE_INTEGER LocalTime,
   SYSTEM_TIMEOFDAY_INFORMATION TimeInformation;
   NTSTATUS Status;
 
-   Status = NtQuerySystemInformation (SystemTimeOfDayInformation,
+  Status = NtQuerySystemInformation(SystemTimeOfDayInformation,
                                     &TimeInformation,
                                     sizeof(SYSTEM_TIMEOFDAY_INFORMATION),
                                     NULL);
   if (!NT_SUCCESS(Status))
-      return Status;
+    return(Status);
 
   SystemTime->QuadPart = LocalTime->QuadPart +
                          TimeInformation.TimeZoneBias.QuadPart;
 
-   return STATUS_SUCCESS;
+  return(STATUS_SUCCESS);
 }
 
 
@@ -279,17 +313,17 @@ RtlSystemTimeToLocalTime(PLARGE_INTEGER SystemTime,
   SYSTEM_TIMEOFDAY_INFORMATION TimeInformation;
   NTSTATUS Status;
 
-   Status = NtQuerySystemInformation (SystemTimeOfDayInformation,
+  Status = NtQuerySystemInformation(SystemTimeOfDayInformation,
                                     &TimeInformation,
                                     sizeof(SYSTEM_TIMEOFDAY_INFORMATION),
                                     NULL);
   if (!NT_SUCCESS(Status))
-      return Status;
+    return(Status);
 
   LocalTime->QuadPart = SystemTime->QuadPart -
                         TimeInformation.TimeZoneBias.QuadPart;
 
-   return STATUS_SUCCESS;
+  return(STATUS_SUCCESS);
 }
 
 /* EOF */