include/tools/long.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9 #pragma once
  10
  11 #include <sal/types.h>
  12
  13 /**
  14  * We have an unfortunate problem in that, on Windows (both 32 and 64-bit), long is always 32-bit.
  15  * But on Linux (64-bit) long is 64-bit. Which leads to nasty situations where things that work
  16  * on Linux, failed on Windows.
  17  * So.....,
  18  * (1) introduce a typedef that replaces (almost) all previous usage
  19  * (2) on 64-bit Windows, this typedef is forced to 64-bit (32-bit platforms, including 32-bit Windows, are left alone)
  20  * (3) fix fallout from (2)
  21  *
  22  * As a consequence of the above, it would be best, over the long term, to regard usage
  23  * of tools::Long in the codebase as meaning "we're not sure what the ideal size of the datatype is",
  24  * and where possible, replace it with a better datatype like sal_Int32/sal_Int64/etc.
  25  *
  26  * NOTE: If you change this, make sure HAVE_FEATURE_JUMBO_SHEETS matches this, as it requires at least 64bit tools::Long.
  27  */
  28 namespace tools
  29 {
  30 #if defined _WIN64
  31 typedef sal_Int64 Long;
  32 typedef sal_uInt64 ULong;
  33 #else
  34 typedef long Long;
  35 typedef unsigned long ULong;
  36 #endif
  37 }
  38
  39 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */