Gabriele Cosmo
150 lines
4.7 KiB
C++
150 lines
4.7 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: templates.hh,v 1.9 2005/12/02 13:42:49 gcosmo Exp $
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// GEANT4 tag $Name: geant4-08-00 $
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//
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//
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// -*- C++ -*-
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//
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// -----------------------------------------------------------------------
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// This file should define some platform dependent features and some
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// useful utilities.
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// -----------------------------------------------------------------------
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// =======================================================================
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// Gabriele Cosmo - Created: 5th September 1995
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// Gabriele Cosmo - Minor change: 08/02/1996
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// Gabriele Cosmo - Added DBL_MIN, FLT_MIN, DBL_DIG,
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// DBL_MAX, FLT_DIG, FLT_MAX : 12/04/1996
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// Gabriele Cosmo - Removed boolean enum definition : 29/11/1996
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// Gunter Folger - Added G4SwapPtr() and G4SwapObj() : 31/07/1997
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// Gabriele Cosmo - Adapted signatures of min(), max() to
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// STL's ones, thanks to E.Tcherniaev : 31/07/1997
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// Gabriele Cosmo,
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// Evgueni Tcherniaev - Migrated to CLHEP: 04/12/1997
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// =======================================================================
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#ifndef templates_h
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#define templates_h 1
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#include <limits>
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//
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// If HIGH_PRECISION is defined to TRUE (ie. != 0) then the type "Float"
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// is typedefed to "double". If it is FALSE (ie. 0) it is typedefed
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// to "float".
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//
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#ifndef HIGH_PRECISION
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#define HIGH_PRECISION 1
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#endif
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#if HIGH_PRECISION
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typedef double Float;
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#else
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typedef float Float;
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#endif
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// Following values have been taken from limits.h
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// and temporarly defined for portability on HP-UX.
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#ifndef DBL_MIN /* Min decimal value of a double */
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#define DBL_MIN std::numeric_limits<double>::min() // 2.2250738585072014e-308
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#endif
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#ifndef DBL_DIG /* Digits of precision of a double */
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#define DBL_DIG std::numeric_limits<double>::digits10 // 15
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#endif
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#ifndef DBL_MAX /* Max decimal value of a double */
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#define DBL_MAX std::numeric_limits<double>::max() // 1.7976931348623157e+308
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#endif
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#ifndef DBL_EPSILON
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#define DBL_EPSILON std::numeric_limits<double>::epsilon()
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#endif // 2.2204460492503131e-16
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#ifndef FLT_MIN /* Min decimal value of a float */
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#define FLT_MIN std::numeric_limits<float>::min() // 1.17549435e-38F
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#endif
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#ifndef FLT_DIG /* Digits of precision of a float */
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#define FLT_DIG std::numeric_limits<float>::digits10 // 6
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#endif
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#ifndef FLT_MAX /* Max decimal value of a float */
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#define FLT_MAX std::numeric_limits<float>::max() // 3.40282347e+38F
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#endif
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#ifndef FLT_EPSILON
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#define FLT_EPSILON std::numeric_limits<float>::epsilon()
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#endif // 1.192092896e-07F
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#ifndef MAXFLOAT /* Max decimal value of a float */
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#define MAXFLOAT std::numeric_limits<float>::max() // 3.40282347e+38F
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#endif
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//---------------------------------
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template <class T>
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inline void G4SwapPtr(T* a, T* b) {
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T* tmp=a;
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a = b;
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b = tmp;
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}
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template <class T>
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inline void G4SwapObj(T* a, T* b) {
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T tmp= *a;
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*a = *b;
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*b = tmp;
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}
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//-----------------------------
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#ifndef G4_SQR_DEFINED
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#define G4_SQR_DEFINED
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#ifdef sqr
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#undef sqr
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#endif
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template <class T>
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inline T sqr(const T& x)
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{
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return x*x;
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}
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#endif
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#ifdef G4_ABS_DEFINED
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#ifdef abs
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#undef abs
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#endif
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template <class T>
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inline T std::abs(const T& a)
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{
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return a < 0 ? -a : a;
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}
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#endif
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#endif // templates_h
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