From a16ed909c57823275d89e40e59f6c69123769b1b Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Wed, 18 Dec 2002 02:31:33 +0000
Subject: [PATCH] Implemented RtlTimeToElapsedTimeFields.

---
 dlls/ntdll/time.c  | 30 +++++++++++++++++-------------
 include/winternl.h |  2 +-
 2 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/dlls/ntdll/time.c b/dlls/ntdll/time.c
index aee7e486b47..89d08042ab7 100644
--- a/dlls/ntdll/time.c
+++ b/dlls/ntdll/time.c
@@ -545,23 +545,27 @@ void WINAPI RtlSecondsSince1980ToTime( DWORD time, LARGE_INTEGER *res )
 /******************************************************************************
  *       RtlTimeToElapsedTimeFields [NTDLL.@]
  *
- * ??
- *
- * PARAMS:
- *   liTime [?]: ??
- *   TimeFields [?]: ??
- *
  * RETURNS:
  *   Nothing.
- *
- * FIXME:
- *   Prototype guessed.
  */
-VOID WINAPI RtlTimeToElapsedTimeFields(
-	PLARGE_INTEGER liTime,
-	PTIME_FIELDS TimeFields)
+void WINAPI RtlTimeToElapsedTimeFields( const LARGE_INTEGER *Time, PTIME_FIELDS TimeFields )
 {
-	FIXME("(%p,%p): stub\n",liTime,TimeFields);
+    LONGLONG time;
+    UINT rem;
+
+    time = RtlExtendedLargeIntegerDivide( Time->QuadPart, TICKSPERSEC, &rem );
+    TimeFields->Milliseconds = rem / TICKSPERMSEC;
+
+    /* time is now in seconds */
+    TimeFields->Year  = 0;
+    TimeFields->Month = 0;
+    TimeFields->Day   = RtlExtendedLargeIntegerDivide( time, SECSPERDAY, &rem );
+
+    /* rem is now the remaining seconds in the last day */
+    TimeFields->Second = rem % 60;
+    rem /= 60;
+    TimeFields->Minute = rem % 60;
+    TimeFields->Hour = rem / 60;
 }
 
 /***********************************************************************
diff --git a/include/winternl.h b/include/winternl.h
index 44b885f2665..c3e71f2a69f 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -1038,7 +1038,7 @@ NTSTATUS  WINAPI RtlSystemTimeToLocalTime(const LARGE_INTEGER*,PLARGE_INTEGER);
 
 void      WINAPI RtlTimeToTimeFields(const LARGE_INTEGER*,PTIME_FIELDS);
 BOOLEAN   WINAPI RtlTimeFieldsToTime(PTIME_FIELDS,PLARGE_INTEGER);
-void      WINAPI RtlTimeToElapsedTimeFields(PLARGE_INTEGER,PTIME_FIELDS);
+void      WINAPI RtlTimeToElapsedTimeFields(const LARGE_INTEGER *,PTIME_FIELDS);
 BOOLEAN   WINAPI RtlTimeToSecondsSince1970(const LARGE_INTEGER *,PULONG);
 BOOLEAN   WINAPI RtlTimeToSecondsSince1980(const LARGE_INTEGER *,LPDWORD);
 BOOL      WINAPI RtlTryEnterCriticalSection(RTL_CRITICAL_SECTION *);