CLHEP 2.0.4.7 Reference Documentation
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00001 // -*- C++ -*- 00002 // $Id: FunctionDifference.cc,v 1.3 2003/09/06 14:04:14 boudreau Exp $ 00003 #include "CLHEP/GenericFunctions/FunctionDifference.hh" 00004 #include <assert.h> 00005 00006 namespace Genfun { 00007 FUNCTION_OBJECT_IMP(FunctionDifference) 00008 00009 FunctionDifference::FunctionDifference(const AbsFunction *arg1, const AbsFunction *arg2): 00010 _arg1(arg1->clone()), 00011 _arg2(arg2->clone()) 00012 { 00013 if (arg1->dimensionality()!=arg2->dimensionality()) { 00014 std::cout 00015 << "Warning: dimension mismatch in function difference" 00016 << std::endl; 00017 assert(0); 00018 } 00019 } 00020 00021 00022 FunctionDifference::FunctionDifference(const FunctionDifference & right): 00023 _arg1(right._arg1->clone()), 00024 _arg2(right._arg2->clone()) 00025 { 00026 } 00027 00028 00029 unsigned int FunctionDifference::dimensionality() const { 00030 return _arg1->dimensionality(); 00031 } 00032 00033 FunctionDifference::~FunctionDifference() 00034 { 00035 delete _arg1; 00036 delete _arg2; 00037 } 00038 00039 00040 00041 double FunctionDifference::operator ()(double x) const 00042 { 00043 return (*_arg1)(x)-(*_arg2)(x); 00044 } 00045 00046 double FunctionDifference::operator ()(const Argument & x) const 00047 { 00048 return (*_arg1)(x)-(*_arg2)(x); 00049 } 00050 00051 00052 Derivative FunctionDifference::partial(unsigned int index) const { 00053 const AbsFunction & fPrime = _arg1->partial(index) - _arg2->partial(index); 00054 return Derivative(&fPrime); 00055 } 00056 00057 00058 00059 } // namespace Genfun