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467e864adf
Undefined behavior caused by left shift operations in TopLoc_Location::HashCode() function is fixed. HashCode() function overload for Standard_Size type is made available only if Standard_Size and "unsigned int" are different types (it is usually true for 64-bit platforms). The overload for "unsigned int" is made simple non-templated function (so it behaves the same on 32-bit and 64-bit platforms). HashCode() function overload for Standard_Utf32Char type is made available only if Standard_Utf32Char and "unsigned int" are different types (it is needed for some old compilers).
180 lines
8.2 KiB
C++
Executable File
180 lines
8.2 KiB
C++
Executable File
// Copyright (c) 1998-1999 Matra Datavision
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// Copyright (c) 1999-2013 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _Standard_Integer_HeaderFile
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#define _Standard_Integer_HeaderFile
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#include <Standard_Std.hxx>
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#include <Standard_TypeDef.hxx>
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#include <Standard_values.h>
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// ===============
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// Inline methods
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// ===============
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// ------------------------------------------------------------------
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// Abs : Returns the absolute value of an Integer
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// ------------------------------------------------------------------
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inline Standard_Integer Abs (const Standard_Integer Value)
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{
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return Value >= 0 ? Value : -Value;
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}
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// ------------------------------------------------------------------
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// IsEven : Returns Standard_True if an integer is even
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// ------------------------------------------------------------------
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inline Standard_Boolean IsEven (const Standard_Integer Value)
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{ return Value % 2 == 0; }
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// ------------------------------------------------------------------
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// IsOdd : Returns Standard_True if an integer is odd
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// ------------------------------------------------------------------
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inline Standard_Boolean IsOdd (const Standard_Integer Value)
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{ return Value % 2 == 1; }
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// ------------------------------------------------------------------
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// Max : Returns the maximum integer between two integers
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// ------------------------------------------------------------------
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inline Standard_Integer Max (const Standard_Integer Val1,
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const Standard_Integer Val2)
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{
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return Val1 >= Val2 ? Val1 : Val2;
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}
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// ------------------------------------------------------------------
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// Min : Returns the minimum integer between two integers
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// ------------------------------------------------------------------
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inline Standard_Integer Min (const Standard_Integer Val1,
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const Standard_Integer Val2)
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{
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return Val1 <= Val2 ? Val1 : Val2;
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}
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// ------------------------------------------------------------------
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// Modulus : Returns the remainder of division between two integers
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// ------------------------------------------------------------------
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inline Standard_Integer Modulus (const Standard_Integer Value,
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const Standard_Integer Divisor)
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{ return Value % Divisor; }
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// ------------------------------------------------------------------
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// Square : Returns the square of an integer
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// ------------------------------------------------------------------
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inline Standard_Integer Square(const Standard_Integer Value)
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{ return Value * Value; }
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// ------------------------------------------------------------------
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// IntegerFirst : Returns the minimum value of an integer
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// ------------------------------------------------------------------
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inline Standard_Integer IntegerFirst()
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{ return INT_MIN; }
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// ------------------------------------------------------------------
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// IntegerLast : Returns the maximum value of an integer
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// ------------------------------------------------------------------
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inline Standard_Integer IntegerLast()
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{ return INT_MAX; }
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// ------------------------------------------------------------------
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// IntegerSize : Returns the size in digits of an integer
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// ------------------------------------------------------------------
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inline Standard_Integer IntegerSize()
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{ return BITS(Standard_Integer); }
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//! Computes a hash code for the given value of some integer type, in range [1, theUpperBound]
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//! @tparam TheInteger the type of the integer which hash code is to be computed
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//! @param theValue the value of the TheInteger type which hash code is to be computed
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//! @param theMask the mask for the last bits of the value that are used in the computation of a hash code
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//! @param theUpperBound the upper bound of the range a computing hash code must be within
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//! @return a computed hash code, in range [1, theUpperBound]
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template <typename TheInteger>
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typename opencascade::std::enable_if<opencascade::is_integer<TheInteger>::value, Standard_Integer>::type
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IntegerHashCode (const TheInteger theValue,
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const typename opencascade::disable_deduction<TheInteger>::type theMask,
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const Standard_Integer theUpperBound)
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{
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return static_cast<Standard_Integer> ((theValue & theMask) % theUpperBound + 1);
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}
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//! Computes a hash code for the given value of the Standard_Integer type, in range [1, theUpperBound]
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//! @param theValue the value of the Standard_Integer type which hash code is to be computed
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//! @param theUpperBound the upper bound of the range a computing hash code must be within
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//! @return a computed hash code, in range [1, theUpperBound]
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inline Standard_Integer HashCode (const Standard_Integer theValue,
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const Standard_Integer theUpperBound)
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{
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// return (Abs (theMe) % theUpper) + 1;
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return IntegerHashCode(theValue, IntegerLast(), theUpperBound);
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}
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// ------------------------------------------------------------------
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// IsEqual : Returns Standard_True if two integers are equal
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// ------------------------------------------------------------------
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inline Standard_Boolean IsEqual (const Standard_Integer theOne,
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const Standard_Integer theTwo)
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{
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return theOne == theTwo;
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}
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//! Computes a hash value for the given unsigned integer, in range [1, theUpperBound]
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//! @param theValue the unsigned integer which hash code is to be computed
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//! @param theUpperBound the upper bound of the range a computing hash code must be within
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//! @return a hash value computed for the given unsigned integer, in range [1, theUpperBound]
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inline Standard_Integer HashCode (const unsigned int theValue, const Standard_Integer theUpperBound)
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{
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return ::HashCode (static_cast<Standard_Integer> (theValue), theUpperBound);
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}
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//! Computes a hash code for the given value of the "long long int" type, in range [1, theUpperBound]
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//! @param theValue the value of the "long long int" type which hash code is to be computed
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//! @param theUpperBound the upper bound of the range a computing hash code must be within
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//! @return a computed hash code, in range [1, theUpperBound]
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inline Standard_Integer HashCode (const long long int theValue, const Standard_Integer theUpperBound)
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{
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return IntegerHashCode(theValue, 0x7fffffffffffffff, theUpperBound);
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}
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#if (defined(_LP64) || defined(__LP64__) || defined(_WIN64)) || defined(__APPLE__)
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//! Computes a hash code for the given value of the Standard_Utf32Char type, in the range [1, theUpperBound]
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//! @tparam TheUtf32Char the type of the given value (it is Standard_Utf32Char,
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//! and must not be the same as "unsigned int", because the overload of the HashCode function
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//! for "unsigned int" type is already presented in Standard_Integer.hxx)
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//! @param theValue the value of the Standard_Utf32Char type which hash code is to be computed
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//! @param theUpperBound the upper bound of the range a computing hash code must be within
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//! @return a computed hash code, in the range [1, theUpperBound]
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template <typename TheUtf32Char>
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typename opencascade::std::enable_if<!opencascade::std::is_same<Standard_Utf32Char, unsigned int>::value
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&& opencascade::std::is_same<TheUtf32Char, Standard_Utf32Char>::value,
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Standard_Integer>::type
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HashCode (const TheUtf32Char theValue, const Standard_Integer theUpperBound)
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{
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return IntegerHashCode (theValue, IntegerLast(), theUpperBound);
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}
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// ------------------------------------------------------------------
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// IsEqual : Returns Standard_True if two integers are equal
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// ------------------------------------------------------------------
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inline Standard_Boolean IsEqual (const Standard_Utf32Char theOne,
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const Standard_Utf32Char theTwo)
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{
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return theOne == theTwo;
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}
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#endif
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#endif
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