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