mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-03 17:56:21 +03:00
2b2be3fb82
0030551: Foundation Classes - Integer overflow in NCollection_CellFilter HashCode Signed integers are not used in hash code functions now to prevent undefined behavior on left shift operations with signed integers. A possibility of negative values of hash codes is eliminated. INT_MAX → IntegerLast() in hash code functions. All found hash code functions behaves uniformly now: they return a value in the range [1, theUpperBound]. Relevant comments are added to such functions.
31 lines
1.4 KiB
Plaintext
31 lines
1.4 KiB
Plaintext
// Created on: 2005-10-14
|
|
// Created by: Mikhail KLOKOV
|
|
// Copyright (c) 2005-2014 OPEN CASCADE SAS
|
|
//
|
|
// This file is part of Open CASCADE Technology software library.
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it under
|
|
// the terms of the GNU Lesser General Public License version 2.1 as published
|
|
// by the Free Software Foundation, with special exception defined in the file
|
|
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
// distribution for complete text of the license and disclaimer of any warranty.
|
|
//
|
|
// Alternatively, this file may be used under the terms of Open CASCADE
|
|
// commercial license or contractual agreement.
|
|
|
|
//=======================================================================
|
|
// function : HashCode
|
|
// purpose :
|
|
//=======================================================================
|
|
inline Standard_Integer IntTools_SurfaceRangeSampleMapHasher::HashCode (const IntTools_SurfaceRangeSample& theKey,
|
|
const Standard_Integer theUpperBound)
|
|
{
|
|
// return (((K.GetDepthU() % Upper) ^ (K.GetDepthV() % Upper)) % Upper);
|
|
return ::HashCode (theKey.GetIndexU() * theKey.GetIndexV(), theUpperBound);
|
|
}
|
|
|
|
inline Standard_Boolean IntTools_SurfaceRangeSampleMapHasher::IsEqual(const IntTools_SurfaceRangeSample& S1,
|
|
const IntTools_SurfaceRangeSample& S2) {
|
|
return S1.IsEqual(S2);
|
|
}
|