mirror of
https://github.com/Open-Cascade-SAS/OCCT.git
synced 2026-06-10 16:16:54 +08:00
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.
39 lines
1.5 KiB
Plaintext
39 lines
1.5 KiB
Plaintext
// Created on: 1993-11-19
|
|
// Created by: Yves FRICAUD
|
|
// Copyright (c) 1993-1999 Matra Datavision
|
|
// Copyright (c) 1999-2014 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.
|
|
|
|
#include <MAT2d_BiInt.hxx>
|
|
#include <TColStd_MapIntegerHasher.hxx>
|
|
|
|
//=======================================================================
|
|
// function : HashCode
|
|
// purpose :
|
|
//=======================================================================
|
|
inline Standard_Integer MAT2d_MapBiIntHasher::HashCode (const MAT2d_BiInt& theKey, const Standard_Integer theUpperBound)
|
|
{
|
|
return TColStd_MapIntegerHasher::HashCode (theKey.FirstIndex(), theUpperBound);
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : IsEqual
|
|
//purpose :
|
|
//=======================================================================
|
|
inline Standard_Boolean MAT2d_MapBiIntHasher::IsEqual
|
|
(const MAT2d_BiInt& Key1,
|
|
const MAT2d_BiInt& Key2)
|
|
{
|
|
return (Key1 == Key2);
|
|
}
|