Unsigned Quads

[Mark Newman]

Are unsigned Quads on the wish list? I see that 8-byte signed & unsigned
integer types are appearing in various Windows header files (maybe they've
been there a while) though usually via a structure of two 4-byte types.

On a related note, are the new 64-bit processors and operating systems
introducing any new fundamental data types or are the 8-byte integers
about it?

Thanks!


------------------
Mark Newman

[Scott Turchin]

Anything like this?

Union QuadFILETIME
  dwLowDateTime  As Dword
  dwHighDateTime As Dword
  qdTime         As Quad
End Union

'
'
'
'Function CheckAtomicTime(lserv As String,wPort As Long,aTimeOut As Long,Delay As Double, st As SYSTEMTIME) Export As String
Local buffer    As String
Local lpbuf     As String
Local UTCTime   As String
Local vbdate    As Double

Dim Start       As Dword
Dim Stopp       As Dword
Dim QT          As QuadFILETIME
Dim Pc          As Long

Pc& = SetPriorityClass(GetCurrentProcess(), %HIGH_PRIORITY_CLASS)

lserv = Extract$(Ltrim$(lserv), Any " (")

'51468 99-10-17 05:12:27 15 0 0 888.6 UTC(NIST) *
'Record your starttime In milliseconds
Start = TimeGetTime()
Tcp Open Port wPort At lserv As #hTcp TIMEOUT aTimeOut
Do
  Tcp Recv #hTcp, 1600, buffer
  lpbuf = lpbuf + buffer
Loop While Len(buffer)
Tcp Close #hTcp
lpbuf = Trim$(lpbuf, $LF)
Replace $LF With $CRLF In lpbuf
UTCTime = Trim$(lpbuf, $LF)
Function = UTCTime
Delay = TimeGetTime - Delay
'vbDate = StrToVbDate(Parse$(UTCTime, Any " ",2) + " " + Parse$(UTCTime, Any " ",3))
'VariantTimeToSystemTime vbDate, st
Stopp = TimeGetTime()

'Convert your Atomic time into a SYSTEMTIME structure ST
'FILETIME returns 100's of NANOSECONDS so you have to adjust
'Delay To reflect this resulotion
Delay = (Stopp - Start)* 10000

'NIST TIME SERVER (Nuclear)
'51468 99-10-17 05:12:27 15 0 0 888.6 UTC(NIST) *
If Right$(UTCTime,2) = "* " Then
   Local UTCDate As String
   Local UTCTimeOnly As String
   UTCDate = Parse$(UTCTime, Any " ",2)
   UTCTimeOnly = Parse$(UTCTime, Any " ",3)
    ' Convert date and time to a SYSTEMTIME structure using a date VARIANT
    vbDate = StrToVbDate(UTCDate + " " + UTCTimeOnly)
    VariantTimeToSystemTime vbDate, st
ElseIf Len(UTCTime) = 5 Then
     RFC868toSystemTime CvDwd(UTCTime), st
'ElseIf
   'Internet Time Server
   '"Wed, 13 Oct 1999 15:07:52 -0700"
ElseIf Len(UTCTime) < 2 Then
    Function = Date$ + " DEBUG:"
    Exit Function
End If

'convert your Atomic time In ST To FileTime In QT
SystemTimeToFileTime ST,QT
'Now Add the delay To the Quad-element that overlay the FILETIME-struct
QT.qdTime = (QT.qdTime + Delay) - 50000 'subtract 50ms NIST network delay
'Convert back To SYSTEMTIME
FileTimeToSystemTime QT,ST
Delay = Delay \ 10000
End Function
'-----------------------------------------------------------------------------------

------------------
Scott

[Mark Newman]

What I saw was the variable type LARGE_INTEGER while porting parts of WINIOCTL.H to PB format.
I searched the Win header files and found something similar to this:

struct
{
   DWORD LowPart
   LONG  HiPart
}LARGE_INTEGER

which seems the same as a PB Quad, a signed 8-byte integer. There's also an unsigned version:

struct
{
   DWORD LowPart
   DWORD HiPart
}ULARGE_INTEGER

Actually, I found different implementations of this in several different header files,
depending on some #ifdefs and such.

Anyway, I was just suggesting that unsigned Quads be added to the wish list, along
with any new native 64-bit data types. It's not a big deal to use a TYPE or UNION for
this, just that a native PB type would be easier!


------------------
Mark Newman

[Lance Edmonds]

64-bit unsigned variables are on the wish list already. I'll ask for a tick in your name to be added. Thanks!

------------------
Lance
PowerBASIC Support
mailto:[email protected][email protected]</A>