Gabriele Cosmo
207 lines
6.1 KiB
C++
207 lines
6.1 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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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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#include <climits>
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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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#ifndef INT_MAX /* Max decimal value of a int */
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#define INT_MAX std::numeric_limits<int>::max() // 2147483647
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#endif
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#ifndef INT_MIN /* Min decimal value of a int */
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#define INT_MIN std::numeric_limits<int>::min() // -2147483648
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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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{
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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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{
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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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inline int G4lrint(double ad)
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{
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return (ad>0) ? static_cast<int>(ad+.5) : static_cast<int>(ad-.5);
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}
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inline int G4lint(double ad)
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{
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return (ad>0) ? static_cast<int>(ad) : static_cast<int>(ad-1.);
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}
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inline int G4rint(double ad)
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{
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return (ad>0) ? static_cast<int>(ad+1) : static_cast<int>(ad);
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}
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//-----------------------------
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// Use the following function to get rid of "unused parameter" warnings
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// Example:
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//
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// #ifdef SOME_CONDITION
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// void doSomething(int val)
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// {
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// something = val;
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// }
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// #else
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// void doSomething(int)
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// { }
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// #endif
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//
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// can be simplified to:
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//
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// void doSomething(int val)
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// {
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// #ifdef SOME_CONDITION
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// something = val;
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// #else
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// G4ConsumeParameters(val);
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// #endif
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// }
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//
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// or:
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//
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// void doSomething(int val)
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// {
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// #ifdef SOME_CONDITION
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// something = val;
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// #endif
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// // function call does nothing -- will be "optimized" out
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// G4ConsumeParameters(val);
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// }
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//
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template <typename _Tp, typename... _Args>
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inline void G4ConsumeParameters(_Tp, _Args...)
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{ }
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#endif // templates_h
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